Construction method for steel-concrete arch ring chord member of steel truss arch

Abstract

The invention discloses a construction method for a steel-concrete arch ring chord member of a steel truss arch. The construction method for the steel-concrete arch ring chord member of the steel truss arch comprises the following steps of A, using a cantilever assembling method to form a whole body till an arch ring is closed, wherein the middle part of the arc arch ring is of a pure steel structure, two ends of the pure steel structure are connected with combined structures and the other end of each combined structure is connected with a steel-concrete structure; B, using box shell steel plates of upper chord members and lower chord members, which are all contained in the steel-concrete structures, as external templates for pouring concrete; and pouring the concrete into boxes of the upper chord members and the lower chord members, which are all contained in the steel-concrete structures, from pouring holes in the tops of the upper chord members and the lower chord members, which areall contained in the steel-concrete structures; and C, using box shell steel plates of upper chord members and lower chord members, which are all contained in the combined structures, as external templates for pouring concrete; using internal sleeved box steel plates of the upper chord members and the lower chord members, which are all contained in the combined structures, as internal templates for pouring the concrete; and pouring the concrete into boxes of the upper chord members and the lower chord members, which are all contained in the steel-concrete structures, from pouring holes in thetops of the upper chord members and the lower chord members, which are all contained in the steel-concrete structures, so as to finish the construction.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a construction method for a steel-concrete arch ring chord of a steel truss arch. Background technique [0002] The steel-concrete composite structure (referred to as the steel-concrete structure) is a new type of structure composed of two materials with different properties, steel and concrete. It is a reasonable combination of steel and concrete, giving full play to the high tensile strength of steel. , good plasticity and good compressive performance of concrete to make up for their respective shortcomings; in modern bridge structures, steel-concrete composite structures have increasingly become one of the main directions of bridge development. At present, steel-concrete composite structures are widely used in bridges It is often used on the main girder or bridge tower of cable-stayed bridge suspension bridge. On the steel truss arch of steel arch bridge, there is a...

AI Technical Summary

Problems solved by technology

[0002] The steel-concrete composite structure (referred to as the steel-concrete structure) is a new type of structure composed of two materials with different properties, steel and concrete. It is a reasonable combination of steel and concrete, giving full play to the high tensile strength of steel. , good plasticity and good compressive performance of concrete to make up for their respective shortcomings; in modern bridge structures, steel-concrete composite structures have increasingly become one of the main directions of bridge development. At present, steel-concrete composite structures are widely used in bridges It is often used on the main girder or bridge tower of cable-stayed bridge suspension bridge. On the steel truss arch of steel arch bridge, there is a steel-concrete composite structure in which the arch ring chord is used as a rigid skeleton and the chord is covered with concrete, but the chord is formed. The back of the bridge does not bear force, the steel cannot be fully utilized, and formwork is required to pour the outsourcing concrete, which is costly and economical

Images