H-shaped double column pier wide-bridge-surface cantilever temporary consolidation structure and construction method thereof

Abstract

Provided are an H-shaped double column pier wide-bridge-surface cantilever temporary consolidation structure and a construction method thereof. The H-shaped double column pier wide-bridge-surface cantilever temporary consolidation structure comprises a concrete bearing platform, a box-shaped continuous beam located above the concrete bearing platform and a plurality of supporting columns connected with the concrete bearing platform and the box-shaped continuous beam. The supporting columns are symmetrically arranged on the front side and the rear side of the a pier column in two rows, four corbels poured into a whole with the concrete bearing platform are respectively symmetrically arranged at four corners of the concrete bearing platform along the left side and the right side of the transverse direction of a bridge, four inclined supporting columns symmetrically distributed along the longitudinal direction of the bridge are connected between the corbels and the box-shaped continuous beam, the supporting columns and the inclined supporting columns are steel pipe columns, a cast-in-place supporting beam is arranged on a base plate of the box-shaped continuous beam, and the supporting beam is in opposite-pull connection through prestress precision rolling threaded steel bars evenly distributed in the steel pipe columns. According to the H-shaped double column pier wide-bridge-surface cantilever temporary consolidation structure, the technical problems that temporary supporting points of a traditional temporary consolidation structure cannot be arranged, the fabricating cost is high, construction efficiency is low, and adverse effect is caused to the environment due to high energy consumption are solved.

Description

technical field [0001] The invention relates to a temporary consolidation structure and a construction method thereof in a bridge cantilever construction method, in particular to a structure for consolidation of a wide bridge surface of an H-shaped double-column pier and a construction method thereof. Background technique [0002] During the cantilever construction of the prestressed concrete continuous beam, no matter in the pouring stage, the movement of the hanging basket or the demolition stage, it is necessary to maintain a symmetrical and balanced construction. It shall not be greater than 20% of the weight of the bottom plate of a beam segment. Since the pier column and the continuous beam are hinged, the continuous beam does not bear the bending moment, so temporary consolidation measures should be taken during construction to consolidate the pier column and the continuous beam to withstand the asymmetric load in the cantilever construction. Temporary consolidation i...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of H-type double-column pier wide bridge deck cantilever temporary consolidation structure and its construction method, to solve the problem of traditional temporary consolidation structure applied to H-type double-column open pier and variable cross-section continuous box girder There are technical problems such as the inability to set up temporary support points, the high cost of traditional construction methods, low construction efficiency, and the adverse impact of high energy consumption on the environment.

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