Prefabricated steel template system of large-span and ultrahigh distorted body matched box beam

Abstract

The invention discloses a prefabricated steel template system of a large-span and ultrahigh distorted body matched box beam. The prefabricated steel template system is characterized in that a bottom die system comprises a bottom die and a bottom die adjusting device used for adjusting position and inclination angle of the bottom die; an inner die system comprises an inner die hydraulic system used for adjusting position of an inner die, and an inner die thread rotary rod system; a side die system comprises a side die adjusting mechanism used for adjusting position of a side die; and an end die template of an end die system comprises an end die fixing block section, en end die change block section and an end die ultrahigh change block section. According to the prefabricated steel template system, prefabricated templates of large-span sectional beams on a transition curve are prefabricated, sectional beams of bridges in special regions can be conveniently and quickly achieved through utilization of the system, the problems that the height change of the sectional beams is large and a cross lope changes of the prefabricated steel templates of which the sectional beams are ultrahigh and overweight are successfully solved, the construction cycle is shortened, and the labor intensity of constructors is effectively reduced.

Description

technical field [0001] The invention relates to a box girder prefabricated steel formwork system, which belongs to the technical field of bridge prefabricated box girder pouring, in particular to a large-span, ultra-high twisted body matching box girder prefabricated steel formwork system. Background technique [0002] For the prefabrication of short-line matching segmental beams, the formwork design and application of prefabricated short-line segmental beams on straight lines and equal heights are relatively mature at home and abroad. In recent years, the design and application of prefabricated formwork for segmental beams with large spans and transitional curves have emerged Case. The box girder prefabricated steel formwork system in the prior art cannot meet the prefabrication of ultra-high twisted segmental box girders in long-span and small-radius bridges. [0003] In the description of Chinese invention patent CN105014774A, a prefabricated box girder formwork is discl...

AI Technical Summary

Problems solved by technology

Although this invention solves the technical problems of high construction cost and difficult turnover of the external formwork of the existing mobile formwork bridge building machine, the invention is only applicable to tight construction period requirements, high pier height, uniform span, and the same box girder section size. Unfavorable conditions for crossing rivers, valleys or high traffic restrictions, so it cannot be effectively used to solve the design of formwork in the prefabrication of ultra-high twisted body segmental box girders in long-span and small-radius bridges

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