Formwork and Construction Method for Integral Forming of Box Girder Bottom Web Reinforcement

Abstract

The invention relates to a box girder bottom web reinforcing steel bar integral forming formwork. The formwork is composed of formwork vertical rods, formwork inclined rods, a transverse base, longitudinal bases, longitudinal rods, U-shaped limiting ribs A, a transverse locating steel plate, longitudinal locating steel plates, movable formwork bodies and U-shaped limiting ribs B. Embedded parts are arranged in a pedestal according to the size of a box girder; steel plates with screw holes are welded to the bottoms of the longitudinal bases and the bottoms of the formwork vertical rods, and the longitudinal bases and the formwork vertical rods are fixed to the pedestal through embedded screws; the formwork inclined rods are symmetrically arranged on the two sides of the transverse base according to the design requirement, and the formwork inclined rods and the formwork vertical rods are fixed together; and sliding wheels are arranged at the bottoms of the movable formwork bodies, and the movable formwork bodies are provided with supporting steel pipes and the U-shaped limiting ribs B. The box girder bottom web reinforcing steel bar integral forming formwork has the beneficial effects that the involved structure is convenient to detach and install, the construction efficiency is high, the movable formwork bodies can move transversely and do not affect the overall lifting of a reinforcement cage, high-accuracy localization can be provided for box girder bottom web reinforcing steel bar integral binding forming, and economic and technical benefits are good.

Description

technical field [0001] The invention relates to a mold base for integrally forming steel bars of the bottom web of a box girder. [0002] technical background [0003] Bridge is the key project of road construction. Beam bridge occupies a dominant position in bridge engineering. Among them, the overall binding processing of prefabricated box girder roof reinforcement and installation quality and progress control are the key points and difficulties in beam slab prefabrication construction. [0004] The disadvantages of the traditional binding method are: the prefabricated box girder roof steel bar binding process takes a long time to occupy the prefabricated pedestal and box girder formwork, which is not conducive to the turnover and utilization of the box girder pedestal and box girder formwork; The turnover utilization of the box girder pedestal and the box girder formwork is guaranteed, but the formwork lacks support for the binding of the web reinforcement and the upper-la...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the traditional binding method are: the prefabricated box girder roof steel bar binding process takes a long time to occupy the prefabricated pedestal and box girder formwork, which is not conducive to the turnover and utilization of the box girder pedestal and box girder formwork; The turnover and utilization of the box girder pedestal and the box girder formwork are guaranteed, but the formwork lacks support for the binding of the web reinforcement and the upper reinforcement of the bottom slab, the binding accuracy of the web reinforcement and the upper reinforcement of the bottom slab is low, and the construction quality is difficult to guarantee

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