Overall installation method of double-body separable combined beam

Abstract

The invention relates to an overall installation method of a double-body separable combined beam, a temporary connection system (200) is arranged between a left separable steel box beam and a right separable steel box beam at the rear end of a section of the combined beam (100) to be installed, and matched connectors (300) are arranged in the positions of webs of the left separable steel box beam and the right separable steel box beam, so that the cross sections of a beam section to be erected and an erected beam section are connected in a matched and abutting mode. In the installation process of the section of the combined beam (100) to be installed, a beam erection lifter (400) lifts the combined beam (100) to be installed to slowly approach the front end of an installed combined beam (100), alignment of a section to be erected and an erected section is carried out through the matched connectors (300) and bolts, and accurate positioning of end surfaces of the beam is achieved. The overall installation method of the double-body separable combined beam reduces the relative deformation of flanges at two sides of the double-body separable combined beam under a lifting state, and resolves the problem of the aligning of the cross sections of the beam section to be erected and the erected beam section.

Description

technical field [0001] The invention relates to the installation of double-width separated composite girders in bridge engineering, in particular to a whole-width installation method of double-width separated composite beams. Background technique [0002] The double-width separated composite girder consists of a left separated steel box girder and a right separated steel box girder. There is no precedent for the installation of the entire width at home and abroad. Since the girder erecting crane is located near the middle of the erected girder, conventional When the cantilever method is installed, the flanges on both sides of the left and right separated steel box girders will be relatively deformed, and the transverse deformation directions between the two ends of the double-width separated composite beam that has been erected and the beam end of the double-width separated composite beam to be erected are inconsistent, resulting in two-way deformation Uncoordinated, the con...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects existing in the prior art, the object of the present invention is to provide a method for the entire installation of a double-width separated composite beam, which reduces the relative deformation between the flanges on both sides of the double-width separated composite beam in the hoisting state, and solves the problem of Problems of cross-section matching and jointing between beam segments and erected beam segments

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