Construction method of large-span continuous rigid frame beam with support rotating body without cast-in-place section

Abstract

The invention belongs to the technical field of over line large-span bridge construction, and provides a construction method of a large-span continuous rigid frame beam with a support rotating body without a cast-in-place section in order to solve the problems of large interference on a business line, high construction risk and the like caused by arranging side-span cast-in-place and closure section in the prior art. The over line bridge adopts a construction method that a beam body is casted by adopting a parallel line direction cantilever method or a bracket cast-in-place method and rotatesin place, the conventional rotating body with arranging the side-span cast-in-place section and the closure section is eliminated, the problem of high construction risk above a line or adjacent to anexisting line is avoided, before the beam body rotates, the whole beam body is poured with a support; when a high platform and a low platform are arranged on a side pier, the pouring construction is carried out after the rotating body such as a high bearing platform and the like are in place, the pouring of the low bearing platform is completed before the rotating body construction, but a supportcushion stone needs to be rotated in place and then the pouring construction is carried out. The construction method of the large-span continuous rigid frame beam with the support rotating body without the cast-in-place section overcomes the problems of construction above the existing line or adjacent to the existing line and the like, ensures the operation safety of the business line, reduces theconstruction risk, ensures the construction safety and improves the construction efficiency.

Description

technical field [0001] The invention belongs to the technical field of over-the-line bridge construction, and in particular relates to a construction method for rotating a large-span continuous rigid-frame beam with a support without a cast-in-place section. Background technique [0002] Nowadays, cantilever hanging basket construction is mostly used for construction across existing lines, and construction methods such as closing the top of conventional swivel construction lines bring great risks to the operation of existing lines, and the cast-in-place section is constructed with brackets, which are close to existing lines, and the construction risk is high , Difficult construction, low construction efficiency and other issues, how to ensure the rapid and efficient construction of cross-line bridges and reduce construction risks. Contents of the invention [0003] In order to solve the problem of the impact on the existing line and the high safety risk of the closed secti...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of the impact on the existing line and the high safety risk of the closed section, the side span cast-in-place section and the side span closed section during the construction of the cross-line bridge, the present invention proposes a large-span continuous rigid frame beam with no cast-in-place section. Seat swivel construction method

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