Cast-in-place continuous box girder formwork system and construction method

Abstract

The invention relates to a cast-in-place continuous box girder formwork system which comprises a pile-supported cast-in-place continuous box girder support system, a cast-in-place continuous box girder outer die and a cast-in-place continuous box girder inner die; the pile-supported cast-in-place continuous box girder support system comprises distributive girders, bailey beams, bearing beams, buckling devices, steel stand columns, horizontal supporting rods, scissor supporting rods, connecting steel plates, flange plates, reinforcing ribs, a soft base layer, a hard base layer, pinch plate rings and cast-in-place piles; the cast-in-place continuous box girder outer die comprises flange plate dies, hinge bolts, back ribs, side dies, a bottom die, a safety net, supporting rods, an adjustablejacking, distribution beams, bailey beams, bearing beams, diagonal bracings and steel stand columns; the cast-in-place continuous box girder internal die comprises a steel panel, side ribs, second bolts, steel bars, supporting rods, adjustable jacking supports, jacking ribs, positioning steel bars and first bolts. The cast-in-place continuous box girder formwork system has the beneficial effects that a pile-supported steel stand column buckling device is adopted, so that a cast-in-situ bored pile steel stand column and an upper transverse bridge direction bearing beam can be quickly connectedand easily detached, and connection is safe and stable.

Description

technical field [0001] The invention relates to a cast-in-place continuous box girder, in particular to a cast-in-place continuous box girder formwork support system and a construction method. Background technique [0002] With the rapid development of my country's urban construction and the improvement of bridge construction technology, box girder structures have been more and more widely used in bridge engineering, and are divided into prefabricated box girders and cast-in-place box girders. Among them, cast-in-situ box girders are mostly used for large continuous box girders. The current box girder construction technology is basically mature and has entered a standardized construction process. During construction, it is necessary to build construction supports and make formwork. The disassembly and assembly process of the traditional cast-in-place continuous box girder formwork system is cumbersome, time-consuming and labor-intensive, and the material loss is large, which...

AI Technical Summary

Problems solved by technology

The traditional cast-in-place continuous box girder formwork system is cumbersome to disassemble and assemble, time-consuming and labor-intensive, and the material loss is large, which affects the construction progress of the box girder and the effective control of construction costs

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