Shear elastic buckling of corrugated steel plate shear walls with stiffeners considering torsional rigidity

• Published in: Thin-walled structures Vol. 206; p. 112646
• Main Authors: Wu, Ruo-Min, Yu, Chao-Qun, Wang, Ling-Qi, Tong, Jing-Zhong
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.01.2025
• Subjects: Corrugated steel plate shear wall; Elastic buckling coefficient; Finite element analysis; Optimal layout of stiffeners; Torsional rigidity of stiffeners; Transition torsional rigidity; Optimal layout of stiffeners; Elastic buckling coefficient; Finite element analysis; Torsional rigidity of stiffeners; Transition torsional rigidity; Corrugated steel plate shear wall
• ISSN: 0263-8231
• DOI: 10.1016/j.tws.2024.112646

•Shear elastic buckling theory for SCSPSW with stiffeners considering torsional rigidity was established.•Effect of stiffener layout on elastic buckling load was studied and optimal layout was determined.•Transition torsional rigidity ratio of SCSPSW was determined.•Formulas for shear elastic buckling coefficient were proposed.•FE analyses were performed and validated theoretical results of shear elastic buckling. This paper conducted theoretical and numerical investigations on shear elastic buckling formulas of stiffened corrugated steel plate shear walls (SCSPSWs) considering torsional rigidities of stiffeners. Firstly, based on the orthotropic plate theory and the energy method, a theoretical model for the derivation of elastic buckling coefficients was established, introducing the torsional strain energy term of the stiffeners. On this basis, the variation law of the elastic buckling coefficient of the walls concerning the stiffener positions was studied, determining the optimal layout of the stiffeners. The formula for calculating the elastic buckling coefficient at any stiffener layout was provided. Furthermore, based on the stiffeners arranged in the optimal layout, the transition torsional rigidity of the stiffeners was determined, and the formulas for the elastic buckling coefficient of the SCSPSW with stiffeners considering torsional rigidity were proposed, in which the enhancement of torsional constraints provided by the stiffeners was measured by an enhancement factor. Finally, eigenvalue buckling analyses were performed based on finite element models to validate the theoretical analysis results on the optimal stiffener layout and elastic buckling coefficient.