A kind of construction method of steel curved arch bridge

Abstract

The invention discloses a construction method of a steel curved arch bridge and belongs to the technical field of bridge construction. The construction method comprises the following specific steps that S1, foundation pile construction is conducted, specifically, a trestle bridge and a platform are constructed; S2, a main arch frame is constructed, specifically, arch foot section pre-embedded steel arch rib positioning steel members are mounted; S3, vault supporting mounting is constructed, specifically, closure section steel pipes are mounted, and after the line type is adjusted, steel pipesare welded; S4, pier uprights are mounted, specifically, concrete in lower pipes is symmetrically pumped; S5, a bridge deck support is mounted, specifically, bridge deck slabs are symmetrically mounted on the upstream and the downstream in the axial direction of the bridge from the two ends of a main arch and a subarch in a midspan mode; and S6, bridge deck pavement construction is conducted, specifically, bridge deck pavement auxiliary projects are symmetrically constructed, suspender cable force is copied and adjusted to a design value, steel pipe protective surface paint spraying coating isconducted, and after construction is completed, completed bridge testing and acceptance are conducted. Construction is conducted in strict accordance with the construction scheme and construction rules, control over stress and deformation during arch frame erecting can be guaranteed, and arch bridge midspan high-precision closure is guaranteed.

Description

technical field [0001] The invention discloses a construction method for a steel curved arch bridge, and specifically belongs to the technical field of bridge construction. Background technique [0002] The arch bridge is a kind of bridge that uses the arch as the main load-bearing component in the vertical plane, and the arch bridge has the characteristics of long spanning distance, high space utilization rate, material saving and beautiful appearance. The arch frame is a key part in the construction of the support. The arch frame needs to be built to support all or part of the arch ring and its upper weight when the cast-in-place concrete arch bridge is used. However, in the construction process of the existing arch bridge, due to the limitation of its construction terrain conditions, the construction of the arch bridge is difficult and the construction period is long. The zero stress closure of the main span arch structure of the arch bridge is difficult and the closure a...

AI Technical Summary

Problems solved by technology

However, in the construction process of the existing arch bridge, due to the limitation of its construction terrain conditions, the construction of the arch bridge is difficult and the construction period is long. The zero stress closure of the main span arch structure of the arch bridge is difficult and the closure accuracy is not high. use

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