Background: To improve seismic performance and control the lateral displacements of structures, this research introduces a novel steel shear wall system. The primary objective of this study is to realistically evaluate the effectiveness of this system in enhancing lateral resistance and preventing structural collapse under severe earthquakes.
Methods: In this study, the behavior of three types of steel shear walls, including: Flat Steel Plate Shear Wall (FSPSW) , Vertically Single-layer Corrugated Steel Plate Shear Wall (VCSPSW) , and the hybrid system under cyclic loading following the SAC loading protocol, was analyses using numerical models in Finite Element software. The results obtained from the numerical modeling showed significant agreement with experimental results, demonstrating the validity of the work. In the subsequent stage, parametric studies were conducted on the Vertically Double Corrugated-Flat Steel Plates Shear Wall (VDCFSPSW) featuring double vertical corrugated plates, which included investigating dimensional ratios b/h from 0.5 to 2.5 corrugation angles of 30, 45, 60 and the ratio of the double corrugated plate width to the opening width 25%, 50%, 75% in the hybrid model.
Results: Numerical analyses results indicate that the VDCFSPSW-30-50% hybrid model exhibits a significant improvement in maximum strength (ranging from 4.42% to 13.80%) compared to the VCSPSW-30 model at b/h dimensional ratios between 0.5 and 1.5 Additionally, at a b/h ratio of 2.5 this model shows comparable strength to the FSPSW model, confirming the system’s desirable performance. Furthermore, the average ductility factor of the VDCFSPSW hybrid systems shows a marked superiority over flat shear walls, while its average Response Modification factor significantly outperforms single-layer corrugated shear walls, double-corrugated shear walls, and the hybrid HDCFSPSW systems, demonstrating the enhanced seismic performance of these hybrid systems.
Conclusion: The hybrid VDCFSPSW model outperforms various configurations by combining superior ductility, higher strength, and an improved response modification factor. Its efficient force redistribution and suitable inelastic behavior make it a highly effective and economical alternative to conventional steel shear walls.