An Analytical Model for Composite Steel Plate Wall

Abstract eng:
A new-type of composite steel plate wall (CSPW), which consists of a steel plate sandwiched by two prefabricated concrete panels, has been recently studied. The concrete panels act only as a buckling restrainer for the steel plate by leaving a small gap between the edges of the panels and the boundary columns or beams. Thus seismic forces were resisted only by the steel plate. In this way, both cracking of a common composite wall and buckling of a common steel plate wall have been essentially avoided, ensuring excellent performance of the CSPW under seismic action. An analytical model for the CSPW – Cross-Strip Model was proposed based upon the mechanism and failure mode of CSPW. The cross sectional properties and hysteretic model for the cross strips in the model were determined with theoretical analysis. Comparison with experimental results showed that the proposed model was able to capture accurately nonlinear behavior of CSPW under monotonic and cyclic loading.

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