Cast-in-place box girder construction method

Abstract

The invention discloses a construction method of a cast-in-place box girder. The fabricated foundation is connected by a foundation connecting step and a foundation fastening bolt, and a pier column hoop is arranged on the outer side wall of a bridge pier column; The position-controlling sand in the sand adjusting cylinder; the bottom plate inner support and the web inner support are arranged on the upper part of the web tire beam and the bottom plate tire beam; the lower hanging plate, the upper hanging plate and the hoisting connecting rod are set on the top plate reinforcement cage. Sliding splints are arranged on both sides of the reinforcement cage of the top plate; the space position of the side plate of the outer formwork can be controlled by means of the side plate control tenon and the side plate control bolt, and the position of the inner formwork of the box girder can be controlled through the inner formwork support; The moving box can move along the limit slide rail, and is equipped with a perfusion monitoring pipe; the adjustable bracket is provided with a bracket connection hinge between the bottom bracket and the top bracket, and can pass the angle adjustment vertical bolt and angle adjustment horizontal bolt. Controls the tilt angle of the adjustable brace. The invention improves the accuracy of the reinforcement cage positioning and concrete pouring construction control, and reduces the maintenance difficulty.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a cast-in-place box girder construction method which can improve the accuracy of reinforcement cage positioning and concrete pouring construction control, reduce maintenance difficulty and reduce the impact of construction on the environment. Background technique [0002] Cast-in-place box girder bridges have the advantages of good overall performance, large structural rigidity, small deformation, and good seismic performance, and are more and more widely used in modern highway and railway construction. In the construction of cast-in-place box girder, the preparation of reinforcement cage, formwork support and concrete pouring have always been the key points and difficulties of engineering quality control. [0003] In the prior art, there is a construction method of cast-in-place box girder based on composite hoop bracket, which is characterized in that a built-in ring plate is ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a construction method of cast-in-place box girder to solve the problems of difficult construction and poor safety of cast-in-place box girder in the prior art

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