This paper, based on the R&D and production base of a company, designed prefabricated concrete column components with section steel connection joints, for which a refined numerical model was established for finite element stress simulation and stress performance verification. Through the research...

The most incredible difficulty of the short-line matching method lies in bridge line shape control, which requires accurate measurement methods, accurate control databases, and correct algorithms. On this basis, a bridge incremental launching control system was built by using a distributed control system...

The instrumental seismic intensity, obtained from seismic instruments recording ground motion, is an important indicator for assessing earthquake intensity and the degree of damage to buildings. Frame structures, as common building forms, attract significant attention for their performance during earthquakes....

In response to the simultaneous movement of seismic isolators and cameras during earthquakes, this paper proposes a three-dimensional displacement measurement method based on monocular vision. This method involves placing a chessboard target on the upper and lower supports of the isolator and using a...

Offshore wind power, as a core technology of renewable energy, faces dual challenges from wind loads and seismic forces. Due to their high flexibility and structural complexity, jacket-type offshore wind turbine structures are particularly vulnerable to seismic forces. This paper employs finite element...

Model optimization has an important influence on the accuracy of simulation results based on finite element models. Existing research have been carried out various ideas for model correction to make the finite element model consistent with reality and easy for engineering practice. Good results have...

With the development of China’s economy and industrialization, the steel clarification tank has become an essential and important component in sewage treatment and chemical production, playing a crucial role in improving treatment efficiency and reducing costs. This paper studies the deformation of a...

As an innovative retaining structure, the pile-supported beam retaining wall has gained extensive application in complex geological environments such as submerged embankments, steep slopes, and low-bearing-capacity embankments due to its unique design philosophy and constructional merits. This study...

This study investigates the stability and mechanical performance of a lattice-type high-pile cap foundation for an STT323 tower crane in soft soil conditions at a Shanghai office complex. The foundation, elevated 10 m with a 5.5 m×5.5 m cap, employs lattice columns (cross-sectional side length: 480 mm)...

The single-cylinder foundation for offshore wind power has significant application potential in China’s wind power industry, particularly for deep-water regions, due to its ease of installation and excellent resistance to overturning. This paper investigates the response characteristics of the soil surrounding...

In order to study the influence of large temperature difference on the seismic performance of cable-stayed bridge, a cable-stayed bridge with a temperature difference of 105m+240m+105m was used as the background, and the concrete axial compression tests were carried out at 40℃, 20℃ and -30℃ respectively,...

Based on the simulation technology of LS-DYNA software, this study conducted comprehensive and detailed finite element simulations of concrete-filled steel tube (CFST) columns strengthened with carbon fiber-reinforced polymer (CFRP) wrapping under lateral impact loading. After validating the reliability...

The material deterioration of existing railway concrete bridges in the service process is frequent, and it is urgent to strengthen and repair them. Ultra-high performance concrete, as a repair material, has excellent mechanical properties. In this paper, the interfacial bonding properties of ultra-high-performance...

Concrete continuous box-girder bridges, boasting excellent mechanical performance and construction convenience, have seen prevalent applications in bridge engineering. However, during long-term operation, these bridges are susceptible to various external environmental factors, leading to issues such...

The analysis of geometric nonlinearity in structural engineering has gained increasing attention due to the growing complexity of modern structures, such as high-rise buildings, bridges, and aerospace components, which are often subjected to large displacements and rotations under extreme loading conditions....

With the elevated production of municipal construction waste, the use of construction and demolition waste as recycled aggregate (RA) in the subgrade has become a sustainable and environmentally friendly disposal method. In order to reveal the single-particle crushing behavior of different recycled aggregates,...

The research of hydraulic fracturing theory and technology is developed with the development of oil and natural gas, and in the petroleum industry, hydraulic fracturing technology has been an important measure to increase the production of oil and natural gas. In order to study the crack extension law...

Bridge rotation construction significantly reduces high-altitude work, lowers construction difficulty, and minimizes disruption to traffic below. At the same time, it enhances construction efficiency and improves overall safety. This paper takes the national highway 108 overpass of the Nantongtu Railway...

This paper focuses on the steel plate-honeycomb sandwich structure, combining static experiments, theoretical analysis, and observations of deformation phenomena during composite structure experiments to study the impact of different parameters on the mechanical properties of the composite structure....

In order to enhance the shear strength of mortar - laid through joints in traditional masonry structures and in combination with the development of prefabricated buildings, a new type of prefabricated prestressed masonry structure is proposed. By connecting the through joints with sleeves and wrapping...

This paper focuses on marine large display terminals and systematically investigates their vibration response characteristics using the finite element analysis method. First, through modal analysis technology, we extracted the first six natural frequencies of the display terminal: 86.47 Hz, 87.42 Hz,...

The synchronous top-pushing method of construction offers advantages such as a relatively short construction period, smooth pushing process, and simplified traffic management. In recent years, it has been widely adopted for constructing overpass bridges on operational highways. Currently, there are no...

To address the prevalent issues of low lateral resistance and ductility in corrosion-resistant FRP-confined members, as well as weak FRP-concrete interfacial bonding, this paper proposes a novel marine engineering structural component: FRP-steel-ultra-high performance concrete (UHPC) composite tube (FRP-steel-UHPC...

Objective: To enhance the intelligence and modularization of track equipment design, optimize the decision-making process, and improve the adaptability and scalability of product families. Method: The study integrates the AHP-QFD approach to analyze user demands and technical features, employs K-means...

To prevent early cracking of concrete during the construction period of long-span composite girder bridges with corrugated steel webs, the influence of concrete hydration heat on early stress and temperature fields of structures was studied through on-site testing. A finite element analysis model was...

To effectively address the issue of controlled or suspected vehicles attempting to breach checkpoints after decelerating or stopping, based on a full investigation of the research status in this field, this paper proposes and designs a linear shaped charge jet perforation structure. The structure aims...

Chloride ions in marine environment can significantly accelerate the corrosion of steel bars in concrete structures, which threaten the safety and durability of engineering structures. This paper presents a method for the corrosion determination of steel bar in concrete structures in marine corrosion...

Longshan Bridge is located on the mainstream of the Han River in the Danjiangkou Reservoir. The main bridge takes a 6-span prestressed concrete continuous beam with a solid pier and bored piles as the foundation. The construction of piers 7 #~9 # of the main bridge, which are far away from the riverbank,...

The purpose of this study is to improve the utilization rate of waste concrete, and for the curing environment in large temperature difference areas, the effects of large temperature difference curing and standard curing on the mechanical properties of cement stabilized recycled aggregate (CSRA) are...

This article systematically summarizes and analyzes the research status of critical failure temperature and fire protection technology of aluminum alloy structures, aiming at the problem of poor fire resistance performance of building aluminum alloy structures. It proposes to determine the critical failure...

Molybdenum tailings are the waste of molybdenum extracted from refined molybdenum ore. Because of its potential gelling, it can be prepared as a cementing material instead of cement. In order to improve the pozzolanic activity of molybdenum tailings, mechanical activation method was used to discuss the...

As a relatively novel structural form, regionally confined concrete (RCC) has seen limited research and application in beams. This paper investigates the shear performance of RCC beams through experimental studies and a synthesis of existing literature. The shear bearing capacity was calculated using...

This study investigates the mesoscale damage and mechanical behavior of concrete under loading by establishing a three-dimensional mesoscale model and conducting uniaxial compression simulations. Traditional methods are insufficient in accurately capturing crack propagation, stiffness degradation, and...