Performance of concrete-filled double-skin shallow-corrugated steel plate composite walls under compression-bending load

This paper presents the study on the performance of concrete-filled double-skin shallow-corrugated steel plate composite walls (CDSCW) under combined compression and in-plane bending, where the CDSCW is composed of the concrete-filled double-skin shallow-corrugated steel plate wall (CDSW) and rectangular concrete-filled steel tubular (CFST) columns. The experiments on full-scale specimens show that the concrete and steel work together well under the combined loading, and the inner concrete is effectively confined by both steel tubes and shallowcorrugated steel plates. The numerical model is established for the CDSCW and the feasibility is verified by comparing with the test results. The equations for the resistance of composite wall under combined compression and bending are proposed through an extensive parametric study, and the validity and the reliability of the design methods are discussed. It is concluded that the proposed design methods can reasonably predict the resistance of CDSCW under combined compression and in-plane bending.