Construction method of grid beam concrete cast-in-place bridge deck slab of steel box arch bridge

Abstract

The invention discloses a construction method of a grid beam concrete cast-in-place bridge deck slab of a steel box arch bridge. The construction method comprises the following steps that first, a steel formwork is manufactured; second, the steel formwork is mounted on the designated position of a grid beam, and welding is conducted; and third, the cast-in-place bridge deck slab is constructed ona bridge deck system of the steel box arch bridge. According to the construction method, the steel formwork is welded connection on the grid beam, thus the supporting effect is achieved, erecting of afull-house bracket is avoided, thus disconnection is not needed, a foundation does not need to be laid under the bridge, the problem of high requirement for foundation bearing capacity is avoided, and construction on the place crossing a river and having the insufficient foundation bearing capacity is adapted.

Description

technical field [0001] The invention relates to the construction field of grid girders of steel box arch bridges, in particular to a construction method of concrete cast-in-situ bridge decks of grid girders of steel box arch bridges. Background technique [0002] With the continuous development of domestic steel box arch bridges, the construction of grid girder cast-in-place bridge decks is also increasing. However, the current construction technology for steel box arch bridge grid girder concrete cast-in-place bridge deck in my country is still relatively simple, and new construction technology needs to be explored. [0003] Summing up the under-supported steel box arch bridges that have been built in China, the construction technology of the grid girder cast-in-place bridge deck is mainly the formwork method: at the bridge position of the steel box arch bridge, measures are taken to completely cut off the foundation to ensure the bearing capacity of the foundation After t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a construction method for steel box arch bridge grid girder concrete cast-in-situ bridge deck, which solves the problem that the existing formwork method needs to be broken and has high requirements for the bearing capacity of the foundation

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