Unified calculation method for load-bearing capacity of corrugated steel shear walls under complex stresses

In structural engineering, the load-bearing capacity of corrugated steel plate shear walls (CSPSWs) is significantly influenced by complex stress interactions. Traditional design methods often neglect the effects of combined compressive, bending, and shear stresses on the load-bearing capacity of CSPSWs, adversely affecting the comprehensive analysis of their structural performance. Therefore, there is an urgent need for the development of a unified and accurate calculation formula applicable under such complex stress conditions for CSPSWs. This study presents an equivalent model for CSPSWs under a singular load, which extends into an equivalent truss model under complex stresses, from which a theoretical formula for ultimate load-carrying capacity under said conditions is derived. Additionally, hysteresis tests were conducted on two CSPSW specimens subjected to constant vertical loads, providing valuable insights into the behavior of current CSPSW components. After these experiments, the accuracy of the finite element model was validated, and the constants in the proposed formula were revised based on extensive parametric simulations using finite element analysis. The modified formula was revalidated using existing experimental data, confirming its precision.