Hydraulic inner formwork of assembled corrugated steel web combined box girder

Abstract

The invention discloses a hydraulic inner formwork of an assembled corrugated steel web combined box girder. The hydraulic inner formwork comprises corrugated steel webs, wherein the corrugated steel webs are symmetrically supported between a concrete top plate and a concrete bottom plate; a lower bottom die is fixedly arranged on the upper surface, in a box chamber, of the concrete bottom plate, the lower bottom die is symmetrically and movably connected with first supporting rods extending upwards, and the top ends of the first supporting rods are movably connected with sliding beams; the sliding beams are placed on symmetrical rail pulleys, the rail pulleys are connected with the inner walls of the corrugated steel webs on the same side through supports, the sliding beams are symmetrically and fixedly provided with first hydraulic oil cylinders which are vertically upward, and the top ends of the first hydraulic oil cylinders are jointly connected with a first upper bottom die abutting against the bottom end of the concrete top plate; and the two sides of the first upper bottom die are rotationally connected with second upper bottom dies abutting against the bottom end of the concrete top plate. The hydraulic inner formwork of the corrugated steel web combined box girder can be used for quickly erecting the formwork, saves labor and is convenient to disassemble and assemble.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a hydraulic inner formwork of an assembled corrugated steel web composite box girder. Background technique [0002] As a new type of bridge, the fabricated corrugated steel web composite box girder bridge is gradually occupying an important position in bridge construction. Its reasonable structural form, economical engineering cost and efficient construction process are important conditions for its long-term development in the future. However, the prefabricated corrugated steel web composite box girder started late, and has less mature construction experience. The inner formwork adopts traditional steel formwork. Affected by the structural form of this kind of beam, more than 400 small steel formwork needs to be assembled, and the assembly time is relatively long. It is long and seriously affects the construction period of the project. At the same time, the assembly o...

AI Technical Summary

Problems solved by technology

However, the prefabricated corrugated steel web composite box girder started relatively late, and has less mature construction experience. The inner formwork adopts traditional steel formwork. Due to the structural form of this type of beam, more than 400 pieces of small steel formwork need to be assembled, and the assembly period is relatively short. long, which seriously affects the construction period of the project. At the same time, the assembly of the inner mold is all done manually, which is time-consuming and laborious

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