Supporting system for rapid pushing of spatial double-fold-line steel truss girder

Abstract

The invention relates to a supporting system for rapid pushing of a spatial double-fold-line steel truss girder, and belongs to the technical field of bridge pushing construction. The spatial double-fold-line steel truss girder comprises a straight line section and a bidirectional bent section, a plurality of portal supports and a plurality of ox horn supports are arranged on a front bottom beam and a rear bottom beam of the bent section at intervals respectively, and sliding shoes are arranged on the two sides of the lower end of each portal support respectively. The sliding shoes on the two sides of the door frame type supports are slidably connected to the first linear track beam and the second linear track beam respectively, the track beam at the front bottom beam of the linear section coincides with the second track beam, the sliding shoes are arranged at the lower ends of the ox horn supports, and the sliding shoes of the ox horn supports are jointly slidably connected to the third linear track beam. The track beam at the rear bottom beam of the straight line section is overlapped with the third track beam; the problems that in the pushing process of an existing double-fold-line bridge, construction deviation is likely to be caused, and main structure components are likely to be damaged are solved.

Description

technical field [0001] The invention belongs to the technical field of bridge jacking construction, and particularly relates to a support system for rapid jacking of a space double-folded steel truss girder. Background technique [0002] At present, most of the steel truss bridges are constructed by hoisting and splicing method. Its construction method is mature and the construction period is short, and it occupies a dominant position in the construction of municipal bridges in my country. However, the steel structure bridges with large spans are limited by the scale of the hoisting equipment, and the traditional hoisting scheme is difficult to meet the design and construction requirements, and the jacking construction method must be used for construction. Especially for bridges spanning existing lines, the on-site construction of bridges spanning existing lines has practical constraints that the site is small and large-scale hoisting equipment cannot enter the site. At pre...

AI Technical Summary

Problems solved by technology

[0004] The present invention overcomes the deficiencies of the prior art, and proposes a support system for rapid jacking of steel truss girders with double-broken lines in space; it solves the problem that the current double-broken line bridges easily cause construction deviations during the jacking process and easily cause damage to the main structural components

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