Box girder removal method

Abstract

The invention provides a method for dismantling a box girder, which relates to the technical field of bridge construction and transformation. The method for dismantling a box girder provided by the invention includes the following steps: cutting along the horizontal direction of the box girder, and cutting the box girder into grooves body and top plate; remove the top plate; cut vertically, cut the trough body into multiple sub-trough bodies, in actual operation, first cut along the horizontal direction of the box girder, and cut the box girder into the top plate and the tank body, and then remove the top plate, and then cut the tank body into a plurality of sub-trough bodies, because the top plate is cut and removed first, so that the weight of the entire box girder is reduced, and the When the trough is cut, the impact load of the sub-trough on the bottom support assembly of the box girder is reduced, the safety of dismantling the box girder is improved, and the dismantling of a box girder with a larger cross beam size can be satisfied.

Description

Technical field [0001] The present invention relates to the field of bridge construction and renovation techniques, in particular, to a removal method of a box beam. Background technique [0002] During the high-speed development of urbanization, due to road renovation, the bridge self-structure aging and the need for the need to meet the development of supporting transportation, there will be more and more urban bridges face demolition reconstruction. [0003] For the bridge of the cash box beam, the following method is generally removed: [0004] It is usually necessary to consolidate the box girder and the pier column, that is, the concrete structure is poured at the top of the pier column, and the box beam is solidified by the bottom bridge pier, the pier and the concrete structure, and then the interior extension direction of the bridge plane is cut into whole block. Then the hoisting is removed. [0005] The method of removing the bridge above has the following problems: ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for dismantling a box girder, to solve the problem that the existing method for dismantling a bridge is only applicable to the dismantling of a bridge with a smaller beam size and better integrity of the box girder. After cutting, the weight of the cutting block is large, and the impact load on the lower bracket is relatively large, which affects the stability of the bracket and has technical problems of great potential safety hazards

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