Corrugated steel web continuous beam bridge side span closure cast-in-place support structure and construction method

Abstract

The invention discloses a corrugated steel web continuous beam bridge side span closure cast-in-place support structure and a construction method. The structure mainly comprises a cast-in-place support and a temporary support, and has the features that 1, the two supports are independent systems respectively, and the bearing capacity and stability of the cast-in-place support cannot be affected when the temporary support is dismantled after a plurality of cast-in-place box girders are completed; 2, the temporary support is simple to disassemble; and 3, the elevation of a folding section bottomplate template platform is supported or adjusted by effectively utilizing corrugated steel web plate suspension casting hanging basket bottom template hanging rods and framework bolts of a stiff framework, and thus resources are saved. Therefore the corrugated steel web continuous beam bridge side span closure cast-in-place support structure has the advantages that the operation is convenient andefficient, the construction method has the advantages of being simple, safe, reliable, capable of guaranteeing quality and the like, a corresponding construction method is combined, collapse accidents generated when a full-space support and an operation platform with the length of the bottoms of the outermost ends of the cast-in-place box girders which is cast-in-place are dismantled can be avoided, the effects of energy conservation and emission reduction are achieved, and economic benefits and social benefits are remarkable.

Description

technical field [0001] The invention relates to the construction field of side-span closing of continuous girder bridges with corrugated steel webs, in particular to a cast-in-situ support structure and construction method for closing side-spans of continuous girder bridges with corrugated steel webs. Background technique [0002] The construction of the side span closing section of the corrugated steel web continuous girder bridge usually involves erecting several box girders at the bridge abutment, and then constructing the closing section with the cantilevered box girder extended from the adjacent pier. Since the outermost end of the cast-in-place box girder at the abutment needs to have a certain length of operating platform, and the cantilever box girder extending from the adjacent pier is cast by the cantilever of the hanging basket system, the bottom formwork of the closing section needs to be supported It is on the bottom plate platform of the hanging basket and conn...

AI Technical Summary

Problems solved by technology

Since the outermost end of the cast-in-place box girder at the abutment needs to have a certain length of operating platform, and the cantilever box girder extending from the adjacent pier is cast by the cantilever of the hanging basket system, the bottom formwork of the closing section needs to be supported It is on the bottom plate platform of the hanging basket and connected with the bottom of the box girder at the outermost end of the cast-in-place section, so it is necessary to remove the full-length bracket and the operating platform at the bottom part of the outermost end of the cast-in-place box girder that has been cast-in-place, and it is easy to occur during the dismantling process. Full hall support collapse accident

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