Assembly type corrugated steel web cantilever prefabricated assembled bridge structure and construction method

Abstract

The invention discloses an assembly type corrugated steel web cantilever prefabricated assembly bridge structure and a construction method, and belongs to the technical field of bridge engineering construction.The assembly structure comprises corrugated I-shaped steel, a prefabricated top plate, an upper flange steel plate fixedly arranged on the top of the corrugated I-shaped steel, and a prefabricated bottom plate; the prefabricated top plate is fixedly arranged on a lower flange steel plate at the bottom of the corrugated I-shaped steel; the prefabricated bottom plate is close to the side end and is positioned and connected to the lower flange steel plate through a plurality of self-adjusting connecting pieces in the longitudinal direction, and a concrete pouring gap is formed between the side end of the prefabricated bottom plate and the corrugated I-shaped steel. In a concrete pouring gap, the corrugated I-shaped steel is fixedly provided with a plurality of outer wrapping connecting pieces provided with first through holes in the longitudinal direction, the side end of the prefabricated bottom plate is fixedly provided with a plurality of U-shaped steel bars in the longitudinal direction, and the U-shaped steel bars and the first through holes are arranged in a staggered mode in the longitudinal direction and are arranged on the same longitudinal steel bar in a penetrating and sleeving mode. According to the splicing structure, the bridge and the method, the structural integrity, the construction efficiency and the construction precision are improved.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering construction, and in particular relates to an assembled corrugated steel web cantilever prefabricated assembled bridge structure and a construction method. Background technique [0002] The corrugated steel web composite bridge is a steel-concrete composite structure. Compared with traditional concrete girder bridges, corrugated steel web composite girder bridges have the advantages of light weight, convenient construction, beautiful appearance, etc., and avoid common problems such as web cracking in ordinary concrete girder bridges, and have broad engineering application prospects. [0003] In recent years, bridges with corrugated steel webs have been gradually increasing in span, and cantilever technology is mostly used in the construction of long-span bridges. However, the cast-in-place construction method of the traditional cantilever technology is difficult to achieve convenient a...

AI Technical Summary

Problems solved by technology

However, the cast-in-place construction method of the traditional cantilever technology is difficult to achieve convenient adjustment of the mutual position in the butt assembly of the prefabricated floor and the corrugated I-beam, resulting in low construction accuracy during the hoisting and assembling process, and the traditional assembly structure in the corrugated Problems such as cracking are prone to occur in the connection structure between I-beam and prefabricated roof and prefabricated bottom slab

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