Anti-cracking bridge deck expansion joint device and construction method thereof

Abstract

The invention discloses an anti-cracking bridge deck expansion joint device and a construction method thereof. The anti-cracking bridge deck expansion joint device comprises a supporting assembly (1)and an expansion joint device body (2) mounted above the supporting assembly (1) from bottom to top in sequence, and the expansion joint device body (2) comprises an extendable mounting seat (21) andexpansion joint baffles (22) symmetrically connected to the two sides of the top of the extendable mounting seat (21); and an expansion joint (23) is formed between the two expansion joint baffles (22), the two expansion joint baffles (22) are each provided with a plurality of prestress connecting pieces (24), and the prestress connecting pieces (24) are symmetrically and coaxially connected to the outer walls of the two expansion joint baffles (22). According to the construction method, the traditional construction sequence can be changed, post-cutting of concrete is not needed, one-time casting forming can be achieved, and steel bars do not need to be reserved, so that the problem of later-period steel bar deformation is avoided, meanwhile, the phenomenon that various expansion joint devices are damaged due to concrete breaking can be effectively avoided, the structural safety is greatly improved, and the operation cost is reduced.

Description

technical field [0001] The invention relates to an expansion joint, in particular to an anti-crack bridge deck expansion joint device and a construction method, which are mainly used for the construction of bridge deck expansion joints and belong to the technical field of bridge building construction. Background technique [0002] As we all know, expansion joints refer to when the plane size of the building is large, in order to prevent the internal force of the building components due to climate temperature changes (thermal expansion, cold contraction) and concrete shrinkage, the structure will be cracked or damaged. A structural joint set at an appropriate position along the construction joint direction of a building or structure due to this internal force. [0003] Taking the bridge deck of 10cm reinforced concrete + 10cm asphalt as an example, the general construction sequence of the traditional bridge deck expansion joints is, pre-embedded steel bars → pouring concrete ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the many defects and deficiencies in the above-mentioned background technology, the present invention improves and innovates it, and aims to provide a method that can change the traditional construction sequence, realize the need for back-cut concrete, and can be poured and formed at one time, without the need for Reserve steel bars, thus avoiding the problem of steel bar deformation in the later stage

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