Rapid installing expansion joint for railway bridge

Abstract

The invention discloses a rapid installing expansion joint for a railway bridge. The expansion joint comprises a bridge foundation, a fixing anchoring nail, a prefabricated steel plate and a bufferingcushion, the prefabricated steel plate is arranged on the bridge foundation, the fixing anchoring nail is arranged below the prefabricated steel plate, the buffering cushion is arranged on the prefabricated steel plate, a fixing seat is installed on the buffering cushion, an installing groove is formed in the fixing seat, connecting joints are arranged in the installing groove, a rubber waterstopis arranged between the connecting joints, and pressing blocks are arranged on one sides of the connecting joints. The expansion joint has the advantages that the structure is simple, the expansion joint is usually fixedly connected through bolts, the operation is convenient, the rubber waterstop which is arranged on the expansion joint has better elasticity, wear resistance performance, anti-ageing performance and anti-tearing performance, the adaption deformation capability is high, the waterproofing performance is good, concrete pouring is not needed in the installing process of the expansion joint, the installing time of the expansion joint is effectively saved, and the maintenance is convenient.

Description

technical field [0001] The invention relates to the related technical field of bridge expansion joints, in particular to rapid installation expansion joints for railway bridges. Background technique [0002] Expansion joint refers to a structural joint set at an appropriate position along the construction joint direction of a building or structure in order to prevent cracks or damage to the structure due to climate temperature changes (thermal expansion, cold contraction). The expansion joint is to divide the building components above the foundation such as walls, floors, roofs (except wooden roofs) into two independent parts, so that buildings or structures can be horizontally expanded along the long direction. The width of expansion joints is generally 20 mm to 30 mm, and the joints are filled with thermal insulation materials. The distance between two expansion joints is clearly stipulated in the building structure code. Bridge expansion joints refer to expansion joints ...

AI Technical Summary

Problems solved by technology

Once the telescopic device of the skew bridge is damaged, it will seriously affect the speed, comfort and safety of driving, and even cause driving safety accidents

At present, the expansion joints on bridges are mainly fixed by concrete pouring. The concrete pouring operation process is relatively cumbersome, the solidification time is long, and the maintenance of expansion joints is difficult.

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