Hanging side formwork of cradle

Abstract

The invention relates to a hanging side formwork of a cradle, which comprises a left side formwork, a right side formwork and a hanging device. The upper ends of the left side formwork and the right side formwork have cantilever structures, the left side formwork and the right side formwork are placed on rail beams and are hung on a cast beam section and a front cross beam of the cradle through the rail beams, and the left side formwork and the right side formwork are oppositely braced and fixed through two finely-rolled threaded steel bars. The hanging device comprises phi-36 finely-rolled threaded bars and assorted nut backing plates, wherein the phi-36 finely-rolled threaded bars penetrate through the left side formwork and the right side formwork, the lower ends of the phi-36 finely-rolled threaded bars are fixed on a lower crossbeam through the assorted nut backing plates while the upper ends thereof are fixed on the cast beam section through the assorted nut backing plate, and the scale height of the left side formwork and the right side formwork can be adjusted by pretensioning and drawing so that the left side formwork and the right side formwork can be attached onto the cast beam section. The hanging side formwork of the cradle is an assorted modeling steel formwork of various cradles used for construction of symmetric cantilevers of box girders and particularly suitable for adverse places having higher box girders, heavy sections of the box girders, higher requirement for stability of the side formwork, and strict load control requirements for the cradle.

Description

technical field [0001] The invention relates to an outer shaped steel formwork specially used in the symmetrical cantilever construction of the continuous box girder hanging basket of the bridge superstructure. Background technique [0002] Hanging basket is the main equipment for cantilever construction of continuous box girder. According to the structural form, it can be divided into truss type (including flat chord without balance weight type, rhombus, triangle, bowstring type, etc.), cable-stayed type (including triangular cable-stayed type and prestressed type) cable-stayed), hybrid 3 types. [0003] Hanging basket design principles: light weight, simple structure, firm and stable, easy to move forward and assemble and disassemble, strong reusability, small deformation after stress, sufficient space under the hanging basket, which is conducive to the construction and operation of steel formwork. [0004] The outer formwork of the hanging basket generally adopts shaped ...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the technical problems of heavy weight, hard to control deformation and high construction cost of the existing hanging basket side formwork, and provides a hanging basket hanging side formwork, which uses precision-rolled rebar to suspend the side formwork on the poured The beam section and the hanging basket are placed on the upper beam to fully reduce the weight of the side formwork, reduce the self-weight of the hanging basket, and reduce equipment investment

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