Simplified inelastic global buckling theory of non-buckling corrugated steel shear walls for seismic energy dissipation

Abstract

Non-buckling corrugated steel shear wall was brought forward in this article. In order to achieve full plasticity and stable seismic energy dissipation capacity at drift ratio 1/50, according to its performance objective, simplified inelastic global buckling theory was derived and validated. Firstly, theoretical equations that predict plastic global buckling behavior of corrugated panel were established based on several assumptions for simplification. Galerkin method was used to solve equivalent buckling shear stress approximately. Secondly, sensitivity analysis was conducted, based on which a cost-effective and practical corrugation configuration was proposed and validated by two specimens of corrugated steel shear walls. The test results revealed that proposed theoretical derivations were capable of giving a reasonable estimation of global buckling behavior to a certain degree of accuracy and safety redundancy. Finally, after being validated by the above test results, a numerical model with parameters in a commonly-used range was developed. The proposed theory was further validated based on orthogonal test design method and the most unfavorable condition was considered by fully restraining the horizontal boundary members rather than being regarded as flexible restraint just as observed in the experiments. The results indicated that proposed theory could provide a safe estimation of plastic buckling behavior at drift ratio 1/50 and meet the demands of performance objective proposed for non-buckling corrugated steel shear walls in this paper.