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What are the precautions for special bearings of highway bridges during construction
2026-08-17Special bearings include spherical bearings, bowl bearings, tension compression bearings, friction pendulum seismic isolation bearings, and shock-absorbing bearings. Compared with ordinary plate rubber bearings, they have higher precision requirements, complex structures, and strict protection requirements. Once installed, deviations can easily cause early damage, detachment, jamming, and loss of
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What is the waterproof performance of the shaft type multi-directional displacement comb plate expan
2026-08-10The shaft type multi-directional displacement comb plate expansion device adopts a composite multi-layer waterproof system, relying on the gap sealing of the comb plate, the lower rubber waterproof layer, and the collection and drainage structure to achieve water stop, while also having the ability to self clean slag; It can adapt to multi-dimensional displacement conditions such as longitudinal e
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What is the purpose of GQZ series ball bearings
2026-08-031、 Core use (three basic functions) GQZ belongs to steel spherical bearings (no pressure bearing rubber, sealing ring only dustproof and waterproof), installed between the upper structure and the pier/foundation, and plays three core roles: Vertical bearing: transmitting vertical pressure such as the weight of beams, steel structures, and live loads of vehicles; Universal rotation: adapts
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What are the advantages of cable supports for highway bridges
2026-07-281、 Normal operation phase: Inheriting the basic characteristics of high-performance bearings 1. High vertical bearing capacity and excellent rotational ability Relying on spherical/bowl shaped bodies, it can withstand large tonnage vertical loads; Spherical universal rotation, suitable for deflection and warping deformation of the main beam under live load, without generating additional be
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What kind of bridge conditions are suitable for using special bearings for highway bridges
2026-07-20Conventional plate rubber bearings are only suitable for small and medium span, straight, and simply stressed bridges. In any of the following working conditions, special bearings must be selected:
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What are the applications of comb plate expansion device in road engineering
2026-07-13The comb plate relies on the sliding of meshing steel plates to adapt to the expansion and contraction of the beam body, with an expansion range of 40-1000mm. It has smooth driving, good noise reduction effect, strong bearing capacity, and can adapt to multi-directional displacement. It is divided into two major sections: new construction and old bridge renovation.
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What are the material characteristics of the JQZ series ball bearings
2026-07-06JQZ multi-level horizontal force ball shaped steel bearings are divided into four categories of materials: steel structure main body, sliding wear-resistant pair, sealing element, and anchoring accessories. The materials, mechanics, weather resistance, and friction characteristics of each component are explained separately:
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Where are pot type rubber bearings suitable for railway rail transit bridges
2026-06-29Core advantages of pot type rubber bearings: large load-bearing capacity, large horizontal expansion displacement, flexible rotation, weather resistant sealing, and ability to withstand repeated train impact braking force. They are specifically designed for heavy-duty, large-span, and complex deformation railway bridges that plate bearings cannot meet. They are suitable for four major scenarios: c
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