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What is the main purpose of special bearings for highway bridges to solve
2025-09-08Special bearings for highway bridges are specialized bearings designed for complex working conditions or special functional requirements that conventional bearings cannot meet. Their core function is to solve the problems of bridge structural deformation, force transmission, environmental adaptation, and functional expansion that conventional bearings cannot cope with, ensuring the safety, stabili
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How does the comb plate expansion device perform in low-temperature environments
2025-09-03The performance of the comb plate expansion device in low temperature environments (usually referring to temperatures ≤ -10 ℃, and can be as low as -30 ℃ in severe cold areas) is influenced by three core factors: material characteristics, structural design, and installation processes. The overall performance shows the characteristic of "retaining rigid advantages but highlighting flexible shortcom
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Why is it said that the multi-directional displacement adaptability of spherical bearings in railway
2025-08-26The reason why the spherical bearings of railway rail transit bridges are considered to have good adaptability to multi-directional displacement lies in their unique structural design, force transmission mechanism, and material properties. They can correctly match the rigid requirements of railway bridges for "multi-dimensional displacement compensation" under complex working conditions (such as t
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What factors affect the friction coefficient of friction pendulum ball bearings for highway bridges
2025-08-19Friction pendulum ball bearings (FPS bearings) for highway bridges are a new type of seismic isolation bearings suitable for large-span and high seismic demand bridges. Their core characteristics revolve around three dimensions: seismic isolation performance, bearing capacity, and adaptability, as follows:
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What are the applications of modular single joint expansion devices on urban bridges
2025-08-12Modular single joint expansion devices are widely used in urban bridges, and their design features (suitable for small and medium displacement, compact structure, and good driving smoothness) are highly compatible with the operating environment and functional requirements of urban bridges. The main application scenarios include the following:
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What are the applications of comb plate expansion device in bridge reconstruction
2025-08-05The comb plate expansion device is one of the important types of bridge expansion devices. Its core structure is composed of multiple sets of steel comb plates that mesh with each other. The relative displacement of the comb teeth is used to adapt to the longitudinal, transverse, and vertical displacement of the bridge caused by temperature changes, vehicle loads, foundation settlement, and other
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Why is it said that the seismic performance of spherical bearings on railway rail transit bridges is
2025-07-29The excellent seismic performance of spherical bearings on railway rail transit bridges is determined by their structural design, working principle, and material properties. Especially when dealing with horizontal displacement, rotation, and vibration loads caused by earthquakes, they can reduce damage to bridge structures through multiple mechanisms. The specific reasons are as follows: 1. Flexi
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What are the applications of spherical bearings for railway rail transit bridges on ramp bridges
2025-07-22The application of spherical bearings in railway rail transit bridges on ramp bridges mainly relies on their unique structural characteristics (which can achieve multi-directional rotation, adapt to vertical and horizontal forces), and solve the special stress, displacement, and stability problems caused by the slope of ramp bridges. The specific applications are reflected in the following aspects
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