Deployable prestress steel truss bridge based on deflection pre-warning system

Abstract

The invention discloses a deployable prestress steel truss bridge based on a deflection pre-warning system. The deployable prestress steel truss bridge comprises a steel truss bridge deck, steel trusses, a steel transverse partition truss and a pre-warning system, wherein the steel trusses are arranged on the two sides of the steel truss bridge deck; the steel transverse partition truss is arranged between the steel trusses; the pre-warning system is connected with the steel trusses. The deployable prestress steel truss bridge is provided with the deployable prestress steel trusses for bearing bridge deck load; by exertion of prestress on steel cables, the whole rigidity of the structure is enhanced and the use amount of steel is reduced; the main truss of the structure is deployable, convenient to open and close, and easy to detach and install, so that the construction speed is high. The deployable prestress steel truss bridge combines deployability and prestress; the use safety is enhanced by arranging the pre-warning system; clamping force is increased by virtue of the elastic potential energy of a spring, the principle is simple, and the steel truss bridge is convenient and feasible. In addition, the steel truss bridge is simple in structure, rapid to erect and convenient to carry, and can serve as a temporary bridge for urban road reconstruction, emergency rescue and disaster relief, and military use.

Description

technical field [0001] The invention belongs to the technical field of truss bridges, in particular to a deployable prestressed steel truss bridge based on a deflection early warning system. Background technique [0002] At present, the domestic research and development of deployable bridges are still in their infancy. The deployable bridges appeared in the Second World War, so the old-style deployable bridges are mainly military deployable bridges, such as the TLB impact bridge, Fair Lei axial folding bridge, etc. The deployment mechanism of this type of bridge is complicated, the form is cumbersome, and special transportation equipment is required. After entering the 21st century, both at home and abroad have begun to engage in the development of new types of expandable bridges. The deployment mechanism of this type of expandable bridge is simple. Easy to operate, light in weight and easy to transport. [0003] Existing expandable bridges and rapid-construction prefabrica...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an expandable prestressed steel truss bridge based on a deflection early warning system, aiming to solve the problems of limited use conditions, complicated operation and inconvenient operation in the existing prestressed truss prestressing method

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