Shear Strength of Corrugated Steel Plate Encased with Concrete

Abstract

The shear strength of corrugated steel web with encased concrete is not clear yet. Initially, to study the shear behavior of corrugated steel plate encased with concrete, model tests of straight steel plate and corrugated steel plate encased with concrete were carried out. At the same time, tests of steel plate without concrete encasement were carried out to compare with the concrete encasement model. The shear mechanism of corrugated steel plate encased with concrete is presented. The concrete compression strut and corrugated steel tension strut constitute the “X” truss to provide the shear bearing capacity. The ratio of load shared by concrete and corrugated steel plate is studied at the elastic stage. The shear strength model of the corrugated steel plate with concrete encasement is presented and verified. Finally, shear demand and shear strength of a real bridge are calculated based on the finite element model and the presented strength model. Research results show that Qishan River bridge in China has a safe shear design of a cross-section with a corrugated steel web encased with concrete.

Keywords

infrastructure structures concrete bridges beams box girders girders

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