Development and experimental verification of self-centering shear walls with disc spring devices

• Published in: Engineering structures Vol. 213; p. 110622
• Main Authors: Xiao, Shui-Jing, Xu, Long-He, Li, Zhong-Xian
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 15.06.2020; Elsevier BV
• Subjects: Bearing capacity; Cyclic loading test; Cyclic loads; Disc spring device; Ductility; Earthquake damage; Energy dissipation; Failure analysis; Failure process; Hysteretic behavior; Mechanical properties; Ratios; Seismic activity; Seismic response; Self-centering shear walls; Shear walls; Theological schools; Disc spring device; Self-centering shear walls; Failure process; Hysteretic behavior; Cyclic loading test
• ISSN: 0141-0296; 1873-7323
• DOI: 10.1016/j.engstruct.2020.110622

•A self-centering shear wall (SC-SW) with disc spring devices (DSDs) was developed.•Cyclic loading tests were conducted on SC-SWs to examine their seismic performance.•SC-SW exhibits stable energy dissipation and excellent self-centering capabilities.•Residual drift ratios of SC-SWs are significantly lower than that of RC shear wall.•The ductility is improved and main parts of SC-SW wall panel are well protected. A new type of self-centering shear wall (SC-SW) with disc spring devices (DSDs) symmetrically installed at the foot of the wall panel is developed in this study. The SC-SWs with DSDs are designed to reduce the amount of damage to the main part of the wall and to minimize the residual displacement of the structure. To examine the seismic performance of the SC-SWs with DSDs, cyclic loading tests were conducted on two DSDs, one conventional shear wall, and two SC-SWs. The hysteretic behavior and failure process of the specimens are analyzed, and a comparison is conducted between the conventional shear wall and the SC-SWs with DSDs. Experimental results indicate that the DSDs exhibit stable mechanical behavior and excellent self-centering capability and the SC-SWs exhibit stable energy dissipation and excellent self-centering capabilities. The bearing capacity of the SC-SWs is lower than that of the conventional shear wall, whereas the residual drift ratios are significantly lower and the ductility coefficients are significantly higher for the SC-SWs than for the conventional shear wall. Furthermore, the damage of the SC-SWs with DSDs is significantly reduced and the main parts of the wall panel are well protected.