Construction method of cable-stayed combined support for construction of first segment of suspended-pouring arch bridge

Abstract

The invention provides a construction method of a cable-stayed combined support for construction of a first segment of a suspended-pouring arch bridge. The problem that due to the fact that a first segment of a main arch ring arch support is directly located on the cliff edge or due to other environmental influencing factors, a traditional landing support cannot be directly erected for construction is solved. The support is designed with a pier stud as a pillar, finish rolling threaded steel bars and steel strands as inhaul cable and a structural steel bracket as a supporting platform, and the first segment of an arch ring is poured in themanner of a simple cable-stayed bridge. By means of the cable-stayed combined support, the problem that the landing support cannot be adopted for construction is solved, a construction platform is manufactured through an existing arch base, a junction pier and an approach bridge bearing platform structure, and the construction period is prevented from being affected by temporary pillar establishing and the like. Meanwhile, the cable-stayed support has high supporting capability, pouring of long-segment and heavy concrete can be achieved, the structural deformation is small, and the arc arch ring can be well controlled linearly. A new concept is provided for the design of a cast-in-place segment of the arch bridge, and a reference function is provided for later construction of similar structures.

Description

technical field [0001] The invention relates to a construction technology of an arch bridge, in particular to a construction method of a cable-stayed composite support for the construction of the No. 1 segment of a cantilevered arch bridge. To solve the problem that the No. 1 section of the arch foot of the main arch ring is directly located on the edge of the cliff or other environmental factors, and the problem that the traditional floor support cannot be directly used for construction. Background technique [0002] With the advancement of technical theory and the rapid development of materials and equipment, arch bridges have gradually become bridge structures spanning mountains and deep valleys. With the advent of reinforced concrete arch bridges, the construction technology of arch bridges has been continuously developed. Reinforced concrete has the advantages of saving money, large spanning capacity, reasonable force, good integrity, beautiful structural appearance and...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve a construction method in which the No. 1 segment of the cantilevered arch bridge cannot be constructed by using traditional floor supports due to conditional constraints. This provides a reference for the construction of similar bridges in the future, and provides a new idea for the design and construction of the No. 1 section of the cantilevered arch bridge

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