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How to protect the structure of bridges with modular multi joint expansion devices
2026-10-121、 Basic principle of action Bridges are affected by factors such as temperature changes, vehicle loads, concrete shrinkage and creep, and pier settlement, resulting in displacement of the beam length and position. The modular multi group joint expansion device relies on multiple sets of edge beams, middle beams, displacement control boxes, pressure bearings, and sealed rubber bands to deco
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What are the application scenarios of pot type rubber bearings for highway bridges
2026-10-08The pot type rubber bearings for highway bridges have high bearing capacity, flexible rotation, and can adapt to large horizontal displacements. They are mainly used in medium and large-span highway bridge projects with large bearing reaction forces. The specific application scenarios are as follows:
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Which parts of the rotary multi-directional displacement comb plate expansion device need to be insp
2026-09-281、 Comb plate body and meshing gap 1. Main and auxiliary comb plates: Check for cracks, fatigue fractures, warping, severe wear, peeling and rusting of anti-corrosion coatings; Whether the transition between the board surface and the bridge deck is smooth, and whether there are any wrong platforms or steps.
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What are the types of bridges suitable for MS type comb plate expansion device
2026-09-21The MS type multi-directional displacement comb plate expansion device has the ability to adapt to longitudinal expansion, lateral displacement, vertical rotation, and beam end warping in multiple directions, especially suitable for bridge projects with skew, curve, and beam end rotation. The applicable bridge types are as follows:
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What are the factors affecting the service life of plate rubber bearings for highway bridges
2026-09-14The service life of plate rubber bearings for highway bridges is controlled by the coupling of six major factors: product manufacturing quality, design selection, construction and installation quality, service environmental conditions, operational load, and maintenance management. According to the relevant technical requirements of "Plate Rubber Bearings for Highway Bridges" (JT/T 4-2019), "Mainte
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What are the applications of ordinary noise reducing comb plate expansion device in the highway indu
2026-09-081、 Application of New Highway Engineering 1. first-class highway, national and provincial trunk highway bridge (1) Small and medium span continuous beam bridges and simply supported beam bridges: meet the requirements of temperature deformation, concrete shrinkage and creep displacement, reduce vehicle jumping noise, and improve driving comfort. (2) Interchange ramp bridges, skew bridges, and c
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What are the characteristics of modular multi joint expansion device
2026-08-31Composed of edge beams, multiple middle beams, supporting crossbeams, displacement control mechanism, and V-shaped rubber sealing tape; The expansion and contraction of a single unit is 80mm, and by increasing the number of middle beam groups, the total expansion and contraction can reach 160-2000mm, suitable for large displacement bridges.
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What are the advantages of the MS series multi-directional displacement comb plate expansion device
2026-08-24The MS series multi-directional displacement comb plate expansion device relies on a displacement box, spherical pair, and modular comb structure, which can simultaneously adapt to longitudinal, transverse, and vertical turning angles as well as torsional deformation of bridges. It is widely used in urban overpasses, large-span bridges, curved bridges, and rail transit bridges.
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