Steel tube concrete arch bridge body outer wrapped concrete arch springing structure and construction method

Abstract

The invention discloses a steel tube concrete arch bridge body outer wrapped concrete arch springing structure including a bearing platform, a support base, a pressure bearing rebar net, a skewback pressure bearing steel plate, an anti-shearing steel plate, a sleeve barrel with wires, an L-shaped limiting plate, a comb-shaped integral fixed bolt, an anti-cracking rebar net, a middle batten plate,a steel tube arch rib, an arc guard board, a weight bearing steel plate, an integral type fixed support, a pre-buried steel plate, self-compaction high-strength concrete, a skewback shearing force nail, a hinged open-and-close type steel mould and a shearing force nail welding locating frame; the bearing platform is connected with the support base, and a connection part of the bearing platform andthe steel tube arch rib is provided with the pressure bearing rebar net and the skewback pressure bearing steel plate to be enhanced; the connection part of the support base and the steel tube arch rib is provided with the anti-shearing steel plate to be enhanced; and the steel tube arch rib is provided with an anti-cracking rebar net to be enhanced and the outer portion of the steel tube arch rib is provided with the hinged open-and-close type steel mould. The steel tube concrete arch bridge body outer wrapped concrete arch springing structure and a construction method have the beneficial effects that the attaching and fixing canalization quick releasing hinged open-and-close type steel mould is arranged, the mounting and constructing speed of an arch springing template is improved, thesize of the structure is effectively guaranteed.

Description

Technical field [0001] The invention relates to an outer concrete arch foot structure of a steel tube concrete arch bridge and a construction method, belonging to the field of civil engineering, and suitable for the construction of the outer concrete arch foot of a steel tube concrete arch bridge. Background technique [0002] In recent years, my country's road and bridge engineering projects have continued to increase, and their construction scale has continued to expand, which has promoted the development of my country's road and bridge industry. The material used in the construction of the concrete-filled steel tube arch bridge is a new type of composite structure. It has good compression, seismic and impact resistance. The construction technology of concrete-filled steel tube has a large span, high strength, good plasticity, fatigue resistance and simple construction. , Can reduce construction cost, shorten construction period, can play the role of concrete formwork, and impr...

AI Technical Summary

Problems solved by technology

[0003] During the construction of concrete-filled steel tube arch bridges, problems such as difficulty in installing and fixing the arch foot formwork, poor overall stability of the formwork, poor welding and positioning effect of shear nails, and easy cracking of the arch foot concrete after construction safety are often encountered.

In the construction process of the arch foot, the labor investment is large, the economy is poor, and the safety during the construction process is poor.

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