The seismic response on linear viscous damping energy dissipation frame structure is studied. In the vibration equation of seismic action, the damping matrix is not orthogonal to vibration mode of the frame structures installing linear viscous damper. Therefore, the traditional mode decoupling method...

As a new-type material for pavement structure, porous concrete has aroused a broad attention and discussion all around the world on the preparation technology and optimization design. The choice of material ingredient and its proportion of porous concrete have been discussed and corresponding tests had...

The purpose of this research is to assess the fatigue crack growth life of the screw blade in the screw sand washing machine. The fatigue crack growth life of the screw blade is assessed on the basis of the random load with the Gauss distribution, curve, linear elastic fracture mechanics, and Austen...

The characterization and properties of TMCP EH36 high strength steel fabricated by the flux copper backing (FCB) one-side SAW process with a high weld heat input of 190KJ/cm were studied. The mechanical properties of the FCB welded joint was tested. The structural characteristics and microstructural...

The transmission lines' fatigue failure caused by aeolian vibration is increasingly apparent as the wide applications of ultra-high voltage, so it is necessary to study the conductors' fatigue life of aeolian vibration. Different from the traditional infinite life design method and nominal stress method,...

This paper investigates the effects of time-delayed feedbacks on Tuned Mass Dampers (TMD) in the galloping control based on a theoretical model. The Runge-Kutta integration algorithm method is used to solve the model. Then we analyse the effects of the time delay T and the gain strength K of the time-delayed...

In this article, we showed possibility to use Impact-echo acoustic method to testing concrete degraded by high temperature. The results are compared with traditional parameter such as flexural bending strength. We observed longitudinal waves.

The variations of ambient temperature can change the state of the supporting structure of the reflector for Five-hundred-meter Aperture Spherical Radio Telescope. The purpose of this research is to monitor the temperature and the varieties to find their relationship. Firstly, the temperature monitoring...

In this paper, tyred wheel dynamic response to road excitation during rolling has been simulated using finite element modelling in a graphical programming environment. The actual contact is an area not a single line and the contact edges are subject to continuous impacts during the rolling. The structural...

This paper presents finite element analysis of 4-layered flexible pavements embedded viscoelastic asphalt concrete (AC) top layer and controlled low-strength materials (CLSM) sublayers as well as graded crushed stone subgrades layers. Two-dimensional deformation assumption is employed. Time-dependent...

The article deals with the solution of the problem of bending of a hinged multilayer beam under the normal uniformly distributed load and induced axial forces. The interaction between layers is accomplished by the contact layer in which the substances of adhesive and substrate are mixed. We will consider...

This study presents an application of the peridynamics method to the analysis of concrete structures, the quasi-static fracture behavior of concrete column is simulated with the proposed model, numerical result shows that the proposed peridynamic model can predict both the progressive failure process...

The paper discusses the concepts of equal strength and equal stress structures. We will call equal strength structure, if at each point the equivalent stress corresponding to a particular theory of strength is equal to the ultimate strength of the material. In equal stress structure at all points of...

Temperature crack is the most difficult factor to control in mass concrete projects. It not only influences the appearance of the structure, but also affects the engineering quality and safety when seriously. So it needs to be controlled. The paper will take the HUAYI SHIHAO Holiday Hotel as an example....

The scale and depth of excavation necessary for building the structure has been increased in line with concentrated urbanization and the effect on underground structure by varying groundwater level is also increasingly growing, which require advanced ground deformation prediction technology depending...

Cracks resulting from shrinkage due to temperature or moisture usually exist in the flexible pavements in highways and runways of airport. This paper presents at finite element analysis of 4-layered flexible pavements with a penetrated longitudinal crack on surface layer embedded with controlled low-strength...

A new family of explicit time integration algorithms with controllable accuracy for structural dynamics are proposed in this paper based on discrete control theory. Firstly, the transfer function of the new algorithms with integration coefficients are obtained by Z transform, then the coefficient expressions...

This manuscript presents the use of recharge impulse technology (RIT) in pile foundations set-up through a case study. More precisely, it discusses the performance brought by such a technique in terms of increasing the bearing capacity of deep foundation systems comparing to classical set-up processes....

This paper uses the method of incremental dynamic analysis (IDA), by reading the control section concrete piers and steel strain calculation termination conditions, according to the existing specification design of high speed railway bridge, with the Beijing-shanghai high-speed railway and a large span...

In the automotive engineering, semi-active suspension (SAS) system has been one of the most attractive research projects. The SAS system usually refers to the damping force control using an adjustable damper. This research proposes a cuckoo search optimized proportional- integral-derivative (CS-PID)...

Experience is a survey of building designs of buildings and constructions of agro industrial complex. For effective diagnosis of their condition offered system approach, in which each element is not described as such, and in view of its place in the whole. An example of technical expertise workshop on...

Aiming at the security problems and tag's cost problems of RFID ,an improved light-weight RFID mutual-authentication protocol was proposed ,this protocol has proved to be save by BAN logic formal analysis method .Besides ,Security analysis shows that the protocol possesses robust security as well as...

The paper is base on a survey activity on a subset of 48 buildings for social housings. The structural materials are R.C. and Masonry. They are representative of about 9000 social flats on the district of Leghorn (Italy), built from early '900 up to 1981, date of adoption of seismic norms. The subset...

Article the decision of current challenges in testing the endurance of steel crane girders. This article reflects the results of a lot of work to improve the durability of crane constructions. A detailed description of the special laboratory for testing of steel crane girders due to dynamic effects....

After DG accessed to distribution network, the structure and operation mode have great changes, larger influence on power system reliability index, so need to adopt a new reliability evaluation model and method, it proposes reliability evaluation model and method of distribution network with distributed...

In order to solve a series of problems caused by disabled clay brick, studied on the new wall materials which applicable to North China, combined with local resource of Shijiatong village, the autoclaved sand-lime brick was selected as the demonstration area of new wall materials. Summarized autoclaved...

High-rise buildings have very slender, atypical, and lightweight shapes such that the higher they become, the more flexible they are, and it is very important to review closely the structure behavior, stability, and usability when designing ultrahigh-rise buildings with a great influence from dynamic...