Steel Structure Arch Bridge

Rigid frame arch bridge is a new bridge type developed on the basis of truss arch bridge, inclined leg rigid frame bridge, etc., combined with the characteristics of arch bridges in China and the experience of unsupported construction. It belongs to a high-order statically indeterminate structure with thrust. Most of the components of the rigid frame arch bridge are eccentrically compressed without pure tension components, which can fully utilize the strong compressive strength of concrete. Compared with truss arches, the amount of concrete and steel reinforcement can be reduced, and the economic benefits are more significant; The construction method has strong applicability and can be used for prefabrication hoisting, supported hoisting, cantilever assembly, rotating construction method, etc.

Due to its characteristics of fewer components, good overall integrity, small self weight, easy construction, low cost, simple structural lines, beautiful and generous appearance, and lower requirements for foundation bearing capacity compared to other arch bridges, it is suitable for bridges with spans of 25-70m.

The upper structure of a rigid arch bridge consists of rigid arch plates, transverse connection systems, and bridge decks

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