Folding type embedded bridge deck continuous telescopic device and construction method thereof

Abstract

The invention relates to a folding type embedded bridge deck continuous telescopic device and a construction method thereof.The folding type embedded bridge deck continuous telescopic device comprises a pair of bridge bodies with opposite ends, each bridge body comprises a main beam and a bridge deck slab layer located above the main beam, and fixing steel plates and prefabricated UHPC plates located above the fixing steel plates are arranged above the ends of the main beams; a joint crossing steel plate is arranged between the two fixed steel plates, a middle post-pouring UHPC block is arranged between the two prefabricated UHPC plates, side post-pouring UHPC blocks are arranged between the bridge deck slab layer and the prefabricated UHPC plates, common asphalt pavement layers are arranged above the bridge deck slab layer, and a modified asphalt layer or an SMA-13 asphalt mastic layer is laid between the two common asphalt pavement layers. The bridge floor connecting structure not only has good deformation performance and convenient construction performance, but also can effectively improve the rigidity of the continuous position of the bridge floor and improve the overall vertical rigidity and strength of the connecting structure, so that the connecting structure is matched with the vertical rigidity of the bridge floor; and the problems of edge gnawing of the preformed groove and cracking of the elastic-plastic body caused by large deformation difference when the wheel passes through the expansion joint can be obviously relieved.

Description

technical field [0001] The invention relates to a folding type embedded bridge deck continuous expansion device and a construction method thereof. Background technique [0002] In traditional bridges with seams, bridge expansion joints are weak points in bridge structure design, and have become one of the difficult problems in bridge construction and maintenance. Expansion joints are directly subjected to vehicle loads and the environment, and are prone to damage and even failure. When the expansion joint is damaged, it is often accompanied by cracking and damage of the concrete pavement connected to it. Over time, uneven settlement and swelling of the pavement will occur in this part of the pavement, which greatly reduces the service quality of the bridge. It affects the safety and durability of the bridge structure. [0003] Traditionally, to solve the problem of bridge expansion joints being easily damaged, it is mainly achieved by improving the structure of expansion j...

AI Technical Summary

Problems solved by technology

However, improving the structure of expansion joints can only reduce the replacement cycle and damage degree of expansion joints, and cannot fundamentally solve the problem of maintenance and replacement of expansion joints

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