Based on the discrete element software (UDEC), the variation laws of the seepage field and displacement field in water-resistant strata between karst cavity with high-pressuried water and tunnel are simulated and analyzed in thin limestone strata. The results show that under the same karst water pressure,...

In this examination we have experimented the effect of ammonia concentration on shortcut nitrification and denitrification in a moving bed biofilm reactor (MBBR). The results show that, when the influent ammonia concentration slowly increased to 200 mg/L, the ammonia removal rate and the nitrite accumulation...

As a reliable technology for connecting a new steel element to the existing concrete structures, the post-installed anchorage is widely used in the field of structural retrofit and strengthening. In order to analyze the mechanical behavior of post-installed anchorage between steel and concrete under...

Shear walls could present much more lateral stiffness than frames in frame-tube structures, so the load carried by frames may increased because of the redistribution of plastic internal force induced by the damage of walls under expected rare earthquakes. To ensure structures with double fortification...

From the point of view of improving the emergency management ability of metro construction, combining with the relevant measures of emergency management, the index system of emergency management ability of metro construction is established. Then, the weights of indexes are determined by the C-OWA operator,...

The paper first introduced the background and causes of arrears of project arrears, and got the following four reasons: unimplemented Project funds; imbalance supply and demand of the construction market; layers of subcontracting; imperfect credit system of the market. This paper talked about the implication...

Based on the secondary development platform of large-scale finite element software, the Fortran subroutine of Duncan - Chang EB constitutive model was compiled and embedded in software. Drainage consolidation shear triaxial test of Shuibuya dam materials was carried out. The triaxial experiment results...

The selection of an ideal living environment is a complex process that involves multiple attributes, which makes the decision of an appropriate living environment difficult. Hence, a suitable assessment model is needed to solve the complexity. The multiple attribute decision-making methods-Fuzzy Delphi...

Aiming at the subway operation safety assessment of empowerment as relatively one-sided, the game theory method is adopted to combine the improved AHP and the entropy weight method. On the basis of considering the factors of passenger flow, a system of evaluation index of metro operation safety is constructed.Taking...

There are many quality problems appearing in residential engineering in recent years. Such residential engineering quality problems are investigated. Through statistical analysis of survey samples, 24 kinds of major quality problems and their corresponding features which often appear in residential engineering...

In view of the frequent occurrence of human activity loess landslide, this paper focused on the influence of the main human activities such as irrigation, excavation, loading and mechanical vibration. The most typical mechanism of loess landslide caused by irrigation was the creep liquefaction mechanism...

The microstructure of waterproof sheet in corrosive water environment of underground engineering was studied by using X-ray CT technology, and the indexes characterizing the failure of material impermeability were explored. Distilled water and NaOH solutions were prepared to simulate corrosive groundwater...

The internal forces at the end of pier, anti-push stiffness at the pier top, and seismic forces distribution law of one-way slope bridge with high and low pier, continuous beam and ordinary laminated rubber or lead-rubber bearing in mountains were analyzed by inputting EL-centro earthquake wave into...

This paper developed a concrete wall protective agent with high weather-ability and contamination resistance. In order to realize the properties of protective agent, acrylic / polyurethane emulsion, fluorocarbon emulsion was used as basic raw material, with ultraviolet absorbent, anti-foam agent, preservative,...

We need to optimize and adjust the conventional bus network in the rail transit environment to give full play to the key role of the rail transit function and its overall benefits, to form smoothly linking combination of rail transit and conventional bus network. This paper is to analyze the defects...

With the development of railways and highways, the construction of the tunnel are increasing, then the number of tunnel fires is also increasing, resulting in a large number of casualties and economic losses. The research breakthrough point of the tunnel fire prevention measures are mainly in two aspects...

In order to solve residential engineering quality problems, the concept of evidence-science and its management principle is analyzed. Under the guidance of the evidence-science, the program to solve residential engineering quality based on evidence-science principle is put forward together with the characteristics...

This paper mainly focuses on discussing the spatial sequence in the renewal of traditional street and lane space through the analysis of space distribution, street alongside interface and street node space of traditional street in Jinan old city. Furthermore, the characteristics of traditional commercial...

In order to describe the failure behavior of sand involving the rotation of principal stress axes, a failure criterion with the method of macro-micro incorporation is employ in this paper. Considering the geometric relationship of loading stress and sand micro fabric, the proposed failure criterion can...

Compared with general time series forecasting methods, fuzzy time series has the main advantage of dealing with linguistic variables or fuzzy data in time series. In this paper, the fuzzy AR (p) model estimation theory is introduced into the data processing of deformation monitoring,and the steps of...

The sludge produced by treating the urban sewage needs thickening and dewatering and it is important for improving environment to reduce the quantity of discharging sludge by increasing dewatering ratio in sludge process. This paper proposes a novel method that can model least squares support vector...

For the dams built on deep-thickness overburden, selection of engineering geological parameters has outstanding importance, which directly affect the design and construction of dam. In the study, the Suki Kinari Hydropower project in Pakistan is discussed as an example, considering the characteristics...

Aluminum alloy is widely used in civil engineering because of the advantages of light weight and high strength. But the elastic modulus of aluminum alloy is only one-third of steel, and the deformation of aluminum alloy is more notable. Second-order nonlinear finite element analysis is performed to analyze...

Based on the simplified dynamic response calculation model of the bridge pier under the coupling effects of seismic loads and dynamic ice force, the effects of consolidated ice on the seismic performance of the bridge pier are studied. The results show that consolidated ice can even enlarge the maximum...

With their technology getting mature, LED are energy efficient and have almost replaced the traditional light source. Therefore, in practice, there is a need to apply LED in an evaluation index for the interior lighting design. In this study, the fuzzy Delphi method (FDM), Analytic Hierarchy Process...

The eco-compensation mechanism can help alleviate the contradiction between economic-social development and water conservation as well as promote the transformation of economic development mode and the sustained sound development of economic society. In this study, the eco-compensation practices of five...

In order to investigate the uplift force of composite beam under negative moment. Three composite beams were analyzed by using the finite element program ANSYS and the finite element models were established with both material and geometrical non-linearity. Specimens had the same section size and different...

This research began with the status of the implementation of school construction projects to explore the relationship between the characteristics of its management and its impact on different levels. Through gathering literature, interviewing experts, statistical methods, and other methods of analysis,...

This paper investigates pedestrians' behaviours in the turning regions in the Xizhimen subway station passageway in Beijing. Through data-processing and data analysis, it can be concluded that the pedestrians tend to turn approach at the turning arc and the speed during the turn decreases initially and...

Taking the railway track construction practice of ning,an intercity railway as an example. Emphatically discusses the CRTS type without a frantic jumble rail construction technical preparation, base plate, rail board shop coarse and fine adjustment, cement emulsified asphalt mortar filling layer perfusion...

This large scale engineering project is a complex system. How to effectively manage large engineering project is a problem at present. Firstly, this paper studies Project Breakdown Structure, and then establishes a model of integrated management for large engineering projects based on PBS and Hall three-dimensional...

An estimation of the design flood is required for projects constructed across rivers. Flood peak values exert direct effects on the selection of construction proposals, the cost prediction, and the construction safety. Differenct methods for flood estimation may be determined specifically in each case....

Different morphological Au@POM nanostructures were prepared under different molar ratios of polyoxometalate Na9[SbW9O33]·19.5H2O (SbW9) at a definite concentration of Au (0.15mM). The influences of polyanion SbW9 for morphology were investigated systematically and quantitatively. The results show that...

Baiyun Hydropower Station is located in Chengbu County, Hunan Province, which is 5km from the county town. By combining the analysis of monitoring data of leakage amount of above-mentioned dam and the numerical calculation results, it is concluded that, there are serious leakage at the lower face of...

Based on the spatial syntactic axial model, combined with POI data, from the angle of urban road space structure, the paper chooses 10 representative commercial circles in Xi'an as the research object. Firstly, quantitatively calculates its commercial potential, then carries on spatial attribute analysis...

The low-cost and long-life ceramic solar collector provides a new train of thought to solve the heating problem in Chinese rural areas. Through testing, the average daily useful heat gain of the ceramic solar system is 7.08 MJ/m2, and the average collecting efficiency is 41.63%.

The influence of shield tunneling on close-access existing pile group foundation of bridge has always been a difficult engineering problem. To analyze this problem, the finite difference software FLAC3D was conducted to simulate the whole process of shield crossing the adjacent pile group foundation...

The change of water condition directly influences the composition and succession of regional vegetation communities. In this study, the Xiliaohe Plain was selected to systematically analyze the succession of vegetation's ecological pattern under the change of water condition in semi-arid area. Based...

In China's engineering construction, the pile foundation has become an important foundation form of a lot of high-rise buildings and large-scale buildings. The pile foundation is the groundwork of the whole building. The pile foundation quality is very important for the whole building. Combined with...

Polyurethane Fly Ash (PUFA) is a new type of environmentally friendly material, with high strength, light weight, easiness of construction, and many other advantages.In this paper, according to the ductility design method, PUFA is bonded to the surface of the existing reinforced concrete bridge pier...

Project after the authenticity of the evaluation results to a large extent depends on the rationality of the evaluation method, this article in view of the construction project post-evaluation of current method is a systematic research, and put forward the factor analysis method used in the construction...

This paper presents theoretically the torsional inertia moment for open thin-walled rod, based on the theory of thin-walled shell. In the deduction, the rigid contour hypothesis is adopted and the cross-sectional warp is taken into account. With the above torsional inertia moment obtained and using the...

This paper presents a new time integration method to solve the kinetic equations with geometric nonlinearity considered, by combining the Newmark integration method and Newton-Raphson iteration method. In this method, the Newmark method is used for the time history integration and the Newton-Raphson...

Taking three Hui communities as cases, and basing on analysis on characteristics of urban space organizations and Islamic architecture in China, this paper seeks a method to promote conservation and renewal for ethnical minority group's cultural heritage by overall planning, protection on ecological...

In recent years, with the growing attention to Chinese own cultural characteristics, how to create a unique cultural landscape space has increasingly become one of the most important topics in landscape architecture, especially in the urgent need of activation and renewal in historical areas, scenic...

This paper summarizes the development policies of BIM technology by the United States, Britain, Singapore and Japan.From the policy-making organization, time, implementation to analyze governments' promotion of the development of BIM,And made recommendations for China's BIM development strategies for...

In order to study the influence rule and mechanism of iron ore tailing powder(IOTP) replacing cement in UHPC, the influences of different specific surface area and dosage of IOTP replacing cement on its strength and liquidity were tested. Moreover, the pore structure and hydration products morphology...

Industry transformation is the main development process of rural modernization and new urbanization. The huge changes of social, economic and cultural caused by rural industry transformation have shocked the social order, values and other aspects of the village, leading to various direct or indirect...

Application practice of tunnel engineering in cold area shows that the repeated seasonally freezing and thawing cycle of surrounding rock and soil can lead to further breakage and cracking of tunnel lining, resulting in the seepage and freezing of the pore water in surrounding rock and soil. The seeped...

In the cold region, the seasonal freezing and thawing for the pore water in the rock or the soil are very likely to occur repeatedly. Engineering practices show that: in the service period, more than 80% of the tunnels have different degrees of frost damage. Hence, the frost-resisting problem must be...

Frost-resisting problem is important for the tunnel in cold region, and thus some thermal protective measure are necessary in order to avoid potential frost. With the development of land transport, tunnels plays an important role in the improvement of land transportation, so it is urgent to prevent the...

In 2017, for the first time, the "Idyllic Complex" is included in the Document No.1 of the Central Government. This paper demonstrates the core construction mode and strategy of "Idyllic Complex" through analysis of its five features. The "Idyllic Complex" needs to follow the "regional gene". According...

Based on the Ježek method of computing elastic-plastic buckling of compression-bending member , analytical solutions of buckling ultimate load for rectangular column strengthened by carbon fibre sheets are derived. A new method of theoretical research on elastic-plastic buckling of steel member is provided....

Given that architectural aesthetics, as a combination of both art and engineering technologies, has been drawing more and more attention, it's has been architects' top priority how to strive a balance between them to achieve real structural aesthetics with an integration of stiffness and softness.

During the investigation in powerhouse area in Kohala hydropower project, slaking is found in most of the argillaceous rock, whose integrity decreasing with time, and cause the rock strength decreases. During investigation, we performed longitudinal sonic wave velocity test, therefore the variation law...

Based on the CFD method, the numerical analysis of the box girder of Gulongshan Bridge is carried out.The static wind coefficient of the bridge box girder under different working conditions is extracted,The influence of the static wind coefficient on the wind speed, the angle of attack and the beam height...

This paper adopts physical experiment method to design uniform experiment on the basis of ultrafine unsized tailing in allusion to the problem of ultrafine unsized tailing back-filling. In this paper, the relationship between the strength of filling material and the ingredients-concentration-ratio of...

Agricultural landscape is a reality show about the agricultural civilization, which is an expression of the agricultural economy, society and other aspects, including cultivated land, crops, roads, canals and forest belts as the mosaics of the landscape patches. It is a kind of synthetic expression of...

Identification of the dominant source could provide instructive guidance for noise mitigation. In this paper, the relation between aerodynamic noise and rolling noise was quantitatively analyzed based on the characteristics of high speed train's pass-by noise. The results indicate that at the speed of...

Based on the strength reduction method, the deformation process of subway foundation pit was predicted, and the stability parameters were analyzed. The analysis parameters contain the settlement displacement of soil, lateral displacement of the underground continuous wall, and safety factor. It is to...

This paper takes a four span continuous curved box girder bridge as an example. The bridge calculation model was established by finite element software ABAQUS. The calculated data is compared with the field test data to verify the model. Then the dynamic response of the bridge under different moving...

Based on the research of the position error control algorithm and the angle error control algorithm, according to the specific characteristics of the harvester, the leveling control strategy of angle error control algorithm is proposed in this paper. Making leveling at both direction of X and Y, first...

In order to select reasonable excavation method of tunnel engineering in complex conditions, model test was done for large-span and shallow-buried bias tunnel in cobble and gravelly soil layer, the reasonable excavation scheme was determined by analysis of tunnel surrounding rock and internal support...

As the development of urban city, the traffic problem becomes increasingly severe, and metro tunnel is a effective method to solve this problem. However, the influence of underground tunnel construction towards existing structure cannot be ignored. For this purpose, based on the Shenzhen metro line 7...

In order to recycle iron tailings and fibers and analyze the performance of pavement cement concrete mixed with it, tests and numerical simulations are carried out. The compressive strength of concrete is significantly influenced by the content of Anshan iron tailings, and the highest 28-day compressive...

Ultra-high toughness cementitious composite (UHTCC) macroscopically exhibits tensile strain hardening characteristic and excellent crack control ability due to steady development of multiple fine cracks, and therefore can be regarded as a promising repair material. Shear tests were conducted on RC beams...

The subway station construction risk factors of uncertainty is researched based on Bias network theory, the safety risk of metro station foundation is analyzed taking a metro station in Shenyang as an example. The possible risk factors for the construction process of subway station was collected combined...

To improve seismic reduction and self-centering performance of buckling restrained braces (BRBs) placed in a steel power plant structure, magnesium alloy is used to completely or partly replace steel as the core material of BRBs. First, steel power plant structure models with BRBs using different core...

Mix design of recycled aggregate pervious concrete for construction is introduced. The effects of aggregate binder ratio and water cement ratio on the compressive strength and flexural strength of recycled aggregate pervious concrete were studied, The result shows that the compressive strength of the...

The mechanical character of natural Pebbles concrete and crushed stone concrete is studied in this study. The results show that compared with the aggregate concrete, the W/B can reduce the crushed stone concrete to a certain extent. For the C50 box beam concrete, the water cement will decrease by about...

SF roof (a sloping roof combined with a flat roof) is a special kind of roof existed in the west China. Based on Energy Plus software simulation, this paper investigated such roofs as well as normal flat roofs and sloping roofs of rural houses in the Ningqiang county of west China. It was found that,...

Elastic constants and homogenized properties of gypsum structure were investigated by first-principles method. The gypsum (chemical formula of CaSO4•2H2O) is an evaporite mineral and a kind of hydration product of anhydrite (chemical formula: CaSO4). Elastic constants are calculated based on Density...

Taking one coal mine in Shanxi section of the west-east gas pipeline as case study, numerical modeling was adopted to study the axial stress distribution on the buried-pipeline in longwall mining. The stress distribution of the simulated pipeline coincides with the monitoring results. The results revealed...

With the adjustment of China's industrial policy, clay bricks which were used for many years has been out of the building field, and some new wall body materials are developing as the main current gradually, including a new wall called EVG-3D introduced from EVG Company in Austria. In this paper, three...

We use the building energy simulation software named Ecotect to carry out the simulation analysis of the overall thermal environment of residential buildings, to find the main factors of high energy consumption, to improve architectural design by analyzing several pieces of case. Firstly, we build 3D...

The estimation of annual average seismic insurance premium in life service period for multi-story reinforced concrete (RC) frames based stochastic parameters models is the focus of the research. An innovative seismic analysis methodology is adopted for seismic loss estimation of buildings. The damage...

Nanoparticulate TiO2 microspheres were synthesized by microwave assisted homogeneous precipitation. The effect of concentration of oxysulfate sulfuric acid complex hydrate (TiOSO4·xH2SO4·xH2O), urea and temperature were investigated. The obtained powder was characterized by X-ray diffraction (XRD), Scanning...

Nanoparticulate titanium dioxide were synthesized via homogeneous precipitation assisted by microwave irradiation.The powder was characterized by X-ray diffraction(XRD), Scanning Electron Microscopy(SEM), Differential scanning calorimetryand thermogravimetric analysis(TG-DSC), Roman spectra and Transmission...

In this paper, to develop a new method to rapidly synthesize hydroxyapatite nanoparticles as a controlled release carrier, sonochemical method was used to prepare nano-hydroxyapatite (nHAP) without any surfactant and used calcium nitrate tetrahydrate and diammonium hydrogen phosphate as source materials....

The paper introduces the structure, composition, monitoring point arrangement, instrument use and information management system of the automatic monitoring system of Xianlin Reservoir.

Wavelet analysis and artificial fish swarm algorithm are combined to study structural damage identification problem. Firstly, establishing the finite element model of structure and calculating the strain mode, then the wavelet maxima modulus of the wavelet transform are used to identify the damage location....

Structural damage detection and diagnosis is a very important factor of the structural safety. In order to improve the application of artificial intelligence algorithms for structural damage detection, we try to wavelet analysis and artificial immune algorithm to combine the analysis by finite element...

Due to disadvantages of premature convergence and poor local optimization, a structural damage identification based on wavelet-genetic stimulated annealing algorithm(abbreviated to SAGA) was proposed.Firstly, wavelet analysis is applied to identify the structural damage location and the number of damaged...

In order to identify the multiple damage of the structure, this paper presents a method of structural damage identification based on wavelet analysis and particle swarm optimization(PSO). Firstly, analyzing dynamic characteristics of the finite element model to obtain the strain mode, then continuous...

In this research, a two-dimension physical model experiment was conducted, which studied the wave force characteristics on steel pipe pile under three different construction stages. The experiment results show that the single pile horizontal force maximum and sub-maximum and total horizontal force maximum...

A two-dimensional numerical model was used to study the current characteristic and deposition around wharf project in Malaysia KEMAMAN. Model study was carried out by using the Commercial software MIKE 21from DHI. The numerical model was calibrated and verified first using measured data and plan layout...

Hydrodynamic survey data include tide, tidal current, wind and wave are analyzed near the project location. The two-dimensional tidal current Numerical model is established and are calibrated by the measured hydrographic data to ensure the accuracy of the model. The tidal current model is calculated...

The goal of this study is to precisely estimate the active earth pressure acting on a rigid retaining wall under translating mode. In this study, the problem of the retaining wall with a parabolic slip surface in the backfill behind the wall is investigated using a two-dimensional system of equilibrium,...

Through the research on the traditional houses and modern rural houses in the Ningqiang area of southern Shaanxi, it is found that the traditional rural houses generally use the storage space under the roof of the slope for summer heat insulation. However, the roof design is generally lack of climate...

A kind of phosphorus accumulating organism (PAO), Bacillus sp. PK1, which showed high phosphorus removal efficiencies, was isolated from special medium in the SBR reactor. To further explore the effect of nutrient factors on its potential phosphorus removal efficiency, initial phosphorus content and...

The spatial and temporal distribution of patinopecten yessoensis larvae has high uncertainty, leading to the difficulty of harvest natural seedlings. Based on the survey data of and the numerical results by DHI MIKE, the effects of topographic change on the trajectory of the larvae was discussed. Hydrodynamic...

The conventional landslide calculation is obtaining a specific stability safety factor by using limit equilibrium method or strength reduction method based on the given strength parameters of soil. Although the M-C(Monte-Carlo) method provides a path to predict instability probability of landslide, in...

A unconsolidated-undrained triaxial test of vertically reinforced clay was carried out. Fiberglass geogrid was used as reinforced material in the form of centrally symmetrical arrangement. The stress-strain relationship, strength characteristics and failure modes of reinforced clay were studied. The...

The buttress-warehouse retaining wall is the combination of buttress retaining wall and warehouse retaining wall. In this paper, with different widths of buttress, the wall's soil pressure and deformation characteristics have been discussed in geotechnical centrifuge model experiment. The results show...

There are many different kinds of projects in major construction enterprises, thus, it is very important to well manage the whole project portfolios. However, not all the construction enterprises can easily and expertly manage these complex project portfolios. Project portfolio management organization...

Pile foundation is often used in the construction of communication tower in the karst region. Stability of pile foundation to support roof is related safety of the superstructure equipment. No deep special study on stability of pile foundation in karst region has been reported yet. Reliability of evaluation...

The surcharge preloading method is reproduced numerically in this paper. The plastic vertical drain is simulated using the drainage surface and the embankment is represented by equivalent load. The results show that the settlement and the pore pressure are correct, which can be used for the future engineering.

The mechanical response of natural sedimentary clay is very different from the usual clay due to its highly-developed structure. When the structured soil is loaded, its structure varies accordingly, which results in the corresponding variation of physical and mechanical properties of soft soil. If the...

In order to help the engineer to understand the variation inside the ground before and after the failure of the embankment, to avoid the accident, the surcharge preloading with plastic vertical drains is carried out numerically. The loading rate is accelerated artificially to analyze the variation of...

Based on the construction project of Guangshan No.1 tunnel of Jinhong high-speed. The finite difference software is utilized to study the tunnel excavation with 3 different construction methods, the surrounding rock stress, displacement and plastic zone are analyzed. The influence of different construction...

With the wider application of unmanned aerial vehicle (UAV), automatic navigation capacity plays an important role. Navigation for UAV is the algorithm that automatically find out the obstacle-free, smoothing path from start position to target position. Current most navigation algorithms for UAV still...

In order to better carry out the research on the flood control capacity of the flood control engineering system in Nanning, using the SAR(1) model to simulate various 50 thousands of flood process of Baise reservoir inflow and Baise-Nanning interval, and analyze the independence and applicability of...

The Pastor-Zienkiewicz-Chan model based on the generalized plasticity theory can simulate the main materials of the earth-rockfill quite well. The three-dimensional modeling of a typical earth-rockfill dam was modeled by HYPERMESH and was implemented into the three-dimensional elasto-plastic program...

In order to explore use the boundary operations to establish topological spaces of rough set, in this thesis the logical reasoning method is used to experimental study on the relationship between the rough set and the topological space, according to the experimental results can reach conclusion that...

Wastewater discharged from printing and dyeing plants on both sides of the Yangtze River seriously threatens the ecological and water security. Direct Blue 6 is a synthetic chemical dye and widely used in textile and dyeing industry. In this study, Pseudomonas aeruginosa HS-DY012 was used as a original...

Environmental pollution due to livestock breeding with organic manure input instead of chemical fertilizers (partially or completely) has become a major concern. This study conducted six combinations of pig manure treatments (25, 50, 100, 200, 400 and 800 kg P hm-2) with half of conventional chemical...

The British specifications and Japanese specifications are often referred to calculate effective flange width in order to analyze shear lag effect of steel box girder. However, there are some differences between the two specifications. According to the two specifications ,the effective widthes of a simple...

Based on the theory of three-dimensional potential flow and considering the combined wind-wave, the motion response and tendon tension response of Tension leg platform with different pretension and number of tendons are studied by AQWA software. The results from analysis can provide some reference value...

Stability of high cutting slope concerns safety pass of road at the bottom of slope and has relationship with security and stability of buildings on the top of slope. On the basis of ANSYS finite element strength reduction method, this paper does elastoplastic nonlinear and large deformation geometric...

Concrete filled tubular arch bridge was widely used in China. The large dead weight and non-integrity of prestressed concrete deck above the arch went against the durability and bridge seismic design. Modified verbundfertigteil (VFT) was proposed as deck in the arch bridge. Modified VFT girder was convenient...

In this paper, the mixed abrasive jet mixing chamber was used as the research object, and the mixing efficiency was improved by introducing the flow around the cylinder in the mixing chamber to enhance the chaos of the flow and promote the turbulence fusion. The three parameters of cylindrical azimuth,...

Concrete structures built in marine environment are susceptible to attack by chemicals such as chloride which diffuses into concrete structures and attack the reinforcements embedded in reinforced structures and break down the reinforcement protective layer. This paper presents the use of Abaqus Finite...

The convoluted nature of contemporary architectural design stands as an innovation trend. However, this tendency could hardly be supported by traditional computational assist design technique. The purpose of this research is to present digital morphogenesis technologies increase the accessible of generation...

In order to enhance the degradation of Di-n-octyl phthalate (DOP). One bacterial strain was isolated from activated sludge of waste water treatment plant(WWTP) using Di-n-octyl phthalate (DOP) as the sole source of carbon and energy. According to the phylogeny of 16S rDNA sequence, the bacterial strain...

Mega-sub structure is a new type of structure system of shock absorption. In order to give full play to its shock isolation performance, in this paper we utilize the finite element method software ANSYS to establish isolation bearing units evenly arranged in the bottom of the substructure column, which...

In this paper the history development of Ludwigshafen was introduced and financial support plan by EU was reviewed. EU funding in Ludwigshafen is divided into two stages. The first stage is 2001 - In 2006, focusing on proposed policies. The second stage is 2007-2013. It will be the basis of the first...

Based on the newly developed concept of the rainwater utilization potentiality in urban area (RUPUA), RUPUA at the research site including the Beijing Olympic Park is estimated as 2,230,000 m3. Three measures were taken for increasing the rainwater utilization: sunken lawns, permeable bricks and water...

The glass concrete saves a lot of sandstone resources and it solves the problem of waste glass reuse at the mean while. There are many researches on the application of glass concrete in civil engineering field at home and abroad. The theoretical achievements are remarkable, but the practical application...

Since EU ETS established in 2005, the international carbon emission trading markets have been running for 12 years, while China's Pilot ETS just for three years. However, owing to the high level carbon emissions, China's carbon emission trading market has a huge development space. The first part compared...

Compression tests of five groups of concrete specimens with different plastic particles (0%, 5%, 10%, 30% and 45% aggregate volume ratio) are carried out. The results show that, the incorporation of plastic particles has significant influence on the mechanical properties of concrete. With the increase...

Under blast load, the progressive collapse performance of reinforced concrete structures is very complex. This article gives a more applicative and efficient RC frame structure model by ANSYS/LS-DYNA, and studies the effects of concrete strength and longitudinal reinforcement ratio to progressive collapse...

In order to solve the problem that the fault samples are too few in the fault diagnosis of a certain type of diesel engine, a diagnostic method based on the simulation of fault symptoms was proposed. First of all, used AVL BOOST software to simulate the working process of diesel engine, extracted the...

Water quality assessments are essential for providing information to water resource management processes. The objective of this study was to investigate the internal correlation among water parameters, to analyze main water contamination and to identify the most polluted section along a seagoing river....

With the gradual depletion of natural resources, sustainable energy shortage and environmental pollution worsening. The green new building materials have gradually tended to be less or less natural resources and develop in the direction of energy conservation and pollution in the production process[1]....

Human-driven eutrophication has caused great changes of phytoplankton community in many China lakes. As a result, the functioning of these lake ecosystems is threatened. In this research, field investigations and sampling were carried out in June 2011 and 2012 in Lake Qixinghu, a coal mining subsidence...

In this paper brilliant green (BG) was decolorized by electrochemical oxidation. Kinetics and Intermediates were also studied. The results showed that the decolorization of BG by electrochemical oxidation was fitted to pseudo first-order reactions. Activation energy was 34.9 kJ/mol. HPLC –MS results...

EPC process, based on the casting structure, technical requirements, production volume, production conditions determines the casting solution, process planning. In this paper, the author from three aspects , the analysis of die casting process design principles, design principles and infiltration technology,...

In this paper, the target pollutant, safranine T (ST) was rapidly degenerated by electrochemical polymerization method. Kinetic degradation behaviors and intermediates were also explored by various characteristic techniques. The results showed that the decolorization of ST by electrochemical oxidation...

The risk of PPP project is one of the issues the most importantly focused by all participants in the project management; the establishment of a scientific risk early warning system is an effective way to control the risk of PPP projects. Based on the design of the PPP project risk early warning index...

This project considered the preliminary design of a 100MW photovoltaic power station on the Atacama Desert in the North of Chile, which provided flexibility for further project construction.

Based on the questionnaire survey data of 1000 migrant workers in Foshan City, Guangdong Province in 2016, logistic regression analysis was carried out on the basic situation, living conditions and housing security willingness of migrant workers. The study found that the gender of migrant workers, the...

The pullout experiments of 9 HRB500 bond-anchorage specimens are carried out. The influence of the quantity of bundled bars, anchorage length on the bond-anchorage behavior of HRB500 bundled bars is comparatively analysed. The load slip curve of bundled bar is obtained, and the bond-anchoring mechanism...

The Northern Shaanxi province has severe water shortages, especially in coal mining areas, and it is very important to identify the influence factors of runoff for the similar area environmental protection. This paper take the Kuye River as an example, firstly introduces the principle and calculating...

The monitoring of halo hydrocarbons such as R134a in atmosphere has attract great attention due to its strong global warming effect. In this study, on-line atmospheric pressure ionization (API) and electron impact ionization (EI) mass spectroscopy was used to measure R134a at ambient level (ppt, 10-12...

Ab initio molecular orbital theory and density functional theory have been applied to investigate B7Cl- cluster. It is found that almost an inversion in stability occurs upon addition of one Cl to B7- cluster. Two low-lying planar(Cs,2A') structures are the lower energy minima, and the quasi-planar geometry...

Fur intensive farming region due to the widely used feed electric processing equipment, makes the power peak increased dramatically during feeding time, the electric power planning and a new challenge to electric power dispatching. In this paper, the energy exchange of power plant and electric power...

The dynamic stability issue of consequent rock slopes has been paid wide attention because this kind of slope is more likely to form a buckling failure under seismic loading. In this paper, in-depth researches focused on the dynamic stability problem of consequent rock slope have been launched by using...

Rainwater management and design for impervious land is an important method of rainwater resource utilization and mitigation of negative impacts on surface runoff. Through the research and analysis of rainwater management cases in domestic and foreign courtyards, we can learn that these courtyards take...

In this paper, experimental study and finite strip method were used to analyze the lateral shearing performance of adjacent precast concrete box beam bridge shear key. According to the structural style and the load characteristics, the finite strip computational theory was introduced to derive the finite...

Chinese modern architecture was the most popular style in the period of 1930s influenced by the style of Beaux-Arts of architects, Chinese Palace style architecture. Here we talk about the traditional inheritance of the Shanghai Special Municipal Government Building and the comparisons between the western-influenced...

Pine pile is an ancient technology applied in soft ground improvement for more than 1000 years. With the rise of many high-rise buildings, many types of modern mechanized-construction pile are widely developed and applied, for example, steel pile, precast concrete pile, sand pile, gravel pile are widely...

Natura 2000 sites are the largest network of protected nature reserves in Europe. These areas have a significant influence on planning investments in the member states of the EU, also in Poland since completion of building investments within their geographic limits, which could have a negative impact...

Short-term forecasting of high-speed rail (HSR) passenger flow is the key to high-speed passenger rail planning decision-making. Furthermore, accurate short-term demand estimates are sure to success of rail revenue management. Different station passenger flow is effect each other, however, previous researches...

In order to study the fire extinguishing performance of fixed water-mist fire extinguishing system in railway tunnel rescue station, a water-mist fire extinguishing system is arranged in the tunnel model with length of 30 m × width 6 m × high 6 m. According to the actual railway tunnel top of the laying...

With the rapid development of the railway passenger train in China, the safety of train operation has become the focus of attention. The railway passenger train due to narrow and limited space, more combustibles within the compartment and the passengers are highly concentrated, in the event of a fire...

Domestic and foreign research on the stability of seamless track plane frame have relatively mature achievement. And it can able to accurately calculate long rail temperature inside force under the condition of different parameters. But there are a few literature reported about under the condition of...

Glass materials are widely used in building, which can improve the lighting condition of the building, but often have some problems in actual use. To solve the problem of increasing heat and energy consumption, an energy saving film is gained in this paper based on optical thin film theory and optimization...

In this paper, an evaluation index system is developed for the intensive use of rural residential land from the aspects of land use intensity, input-intensity, arrangement, as well as usage efficiency. Using the entropy method, on which the intensive use level of rural residential land in Suining County...

As the subway as public transportation in major cities in China play an increasingly important role, the subway operation safety more and more get people's attention.Due to the particularity of subway operation environment and status, makes the subway foundation, especially the quality of the steel rail.The...

Aiming at the problem that the existing semi-active suspension system needs external power supply, the electromagnetic energy recovery device for semi-active suspension is proposed. Based on the analysis of the structure and working principle of the energy recovery device, the energy recovery model and...

At present, commonly used methods to identify Burgers model parameters have subjectivity shortcomings. This paper adopts 1stOpt software with unique nonlinear fitting function. The stress-strain-time equation can be obtained according to constitutive equation of Burgers model. Then four parameters of...

In this paper, the finite element analysis of a special form of variable curvature curved beam element is studied and equilibrium equations of variable curvature curved beam element are established in polar coordinates. Based on the principle of energy method, the relationship between nodes displacement...

Based on the classical magnetic structure of the vehicle MRF damper, this paper mainly focuses on the influence of magnetic circuit structure and key parameters on response time of MRF damper, and put forward the optimization method of magnetic circuit structure, which adopted the double stage magnetic...

Based on the elastic-plastic static analysis results of five shear wall structure models by using the finite element software ANSYS, this paper compares the structural cracks developing conditions of the two bottom layers of structural components, analyzes the weak parts, weak components and nodes of...

It is hard for the starting and ending date of winter construction to be ensured. Since the periods change every year. A number of construction enterprises ignore its danger without taking winter construction measures during periods so that building project accidents often occur. So, how to confirm scientifically...

In this paper, a new lattice model of traffic flow with the consideration of the aggressive-driving behavior is investigated by Xiaoqin-Li et al. The model is studied by using linear and nonlinear analysis method. A thermodynamic theory is transformed to describe the phase transition and critical phenomenon....

Skeleton-dense cement treated stone (STCB) may occur segregation; a laboratory test was carried out to study a specific segregation which could be named migration temporarily in this paper. Two kinds of STCB were tested, two impact factors were identified, and the influence of migration on mechanical...

The basic properties, composition, and structure of four base bitumens: A1, A2, A3, and A4 were analysed. The stability of emulsified asphalt was investigated by means of residue content difference tests. The relationships between the stability of emulsified asphalt and the chemical compositions of the...

With the development of China's transportation industry and the construction of traffic tunnels, tunnel disaster prevention has become an increasingly important research topic. In this paper, we compared the two kinds of smoke prevention modes in the vertical tunnel with the vertical ventilation and...

In this research, a two-dimension physical model experiment was conducted, which studied the wave force characteristics on steel pipe pile under three different construction stages. The experiment results show that the single pile horizontal force maximum and sub-maximum and total horizontal force maximum...

The feasibility of a modified formula for seismic hydrodynamic pressure on pier in deep water in design of highway bridges is discussed in this paper. Several recent results of dynamic response analyses of bridge piers in deep water by various approaches are compared with the values from the formula...

The origin and simplification of formulas for seismic hydrodynamic pressure in the existing guidelines for seismic design of highway bridges of China is reviewed. Five differences from Japanese specifications that is Chinese guidelines come from, are pointed out. A suggestion to modify the formulas is...

A 30 m fabricated prestressed concrete simply supported T-beam bridge uses a pile foundation as its lower structure. Owing to the filled engineering spoil at the abutment side, which is higher than the original ground line 11.87 m, 8 cracks formed in the side of 3 pier columns adjacent to abutment within...

The limit equilibrium theory is employed to analyze the bottom stability of foundation pit, a method that is used to calculate stability coefficient of resisting upheaval in accordance with deterministic mass property and sliding mode. The deterministic model for the analysis of bottom stability that...

The independent smoke detector play a very important role in the prevention and control of fire. Combine BIM technology with GIS technology to improve the level of emergency services and fire control, reduce fire risk, improve the depth of 3D information technology and the ability of fire warning. Firstly,...

To study the adaptability of freight transport supply and demand structure of urban agglomerations, the mechanism of demand and supply of freight transport in urban agglomeration was studied and the theory of freight transport structure of urban agglomeration was put forward and demonstrated. First,...

Aiming at the difficulties of modal concentration and high degree of freedom in the damage identification of the truss structure and the good fault tolerance and robustness of the BP network, based on the theory of the change of the modal parameters of the truss structure before and after the damage,...

To replace steel slag for natural sand completely, the mix proportions of steel slag in concrete was adjusted according to tab density and replacement ratio of Metakaoline/Cement were established. And then testing for slump, setting time, and compressive strength was conducted. According to test results,...

Due to the complexity and variability of PPP projects, the necessity of post-project evaluation is clarified.By comparing with the post-evaluation model of general construction project, the content of evaluation system after PPP is analyzed.From the evaluation of the post-process evaluation,benefit and...

Choosing proper earthquake ground motion parameters is important to establish a relation between strong ground motion and the earthquake damage. In this paper the statistical relationship between ten ground motion parameters and simulated mean earthquake damage indices of simplified masonry structures...

There are many factors involved in the planning and design of high-rise buildings. This paper has analyzed requirements related to the planning and design of high-rise buildings and put forward the strategy of combining BIM with GIS technology in its design. Such a collaborative planning and design approach...

According to the characteristics of Three Gorges reservoir ecosystem in Chongqing of China, the index for potential capacity of ecological environment is amended for early warning evaluating the ecological security in 22 counties of the Three Gorges reservoir. Capacity of ecological environment was ranked...

The coordinated development of Economy-Resources-Environment (ERE) is a key component of sustainable development. Based on the connotation and framework of sustainable development of urban ERE, this paper employs the theory and methodology of System Dynamics (SD) to elucidate the economic growth constrained...

The semi-empirical and semi-theoretical method is adopted to simulate the response of gas continuous buried pipelines subjected to seismic wave propagation. Using the peak ground velocity (PGV) as the intensity measure, the maximum axial responses (strain or stress) of pipelines are calculated. The seismic...

In contemporary urban construction, the priority is to conform to the urban development needs in accordance with ecological and low-carbon requirements. At the initial stages of planning a new town, energy planning and analysis, and establishing sustainable energy development strategies are necessary...