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Steel and Composite Structures Volume 37, Number 3, November10 2020 , pages 341-351 DOI: https://doi.org/10.12989/scs.2020.37.3.341 |
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Experimental study on component performance in steel plate shear wall with self-centering braces |
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Jia-Lin Liu, Long-He Xu and Zhong-Xian Li
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Abstract | ||
Steel plate shear wall with self-centering energy dissipation braces (SPSW-SCEDB) is a lateral force-resisting system that exhibits flag-shaped hysteretic responses, which consists of two pre-pressed spring self-centering energy dissipation (PS-SCED) braces and a wall plate connected to horizontal boundary elements only. The present study conducted a series of cyclic tests to study the hysteretic performances of braces in SPSW-SCEDB and the effects of braces on the overall hysteretic characteristics of this system. The SPSW-SCEDB with PS-SCED braces only exhibits excellent self-centering capability and the energy loss caused by the large inclination angle of PS-SCED braces can be compensated by appropriately increasing the friction force. Under the combined effect of the two components, the SPSW-SCEDB exhibits a flag-shaped hysteretic response with large lateral resistance, good energy dissipation and self-centering capabilities. In addition, the wall plate is the primary energy dissipation component and the PS-SCED braces provide supplementary energy dissipation for system. The PS-SCED braces can provide up to 90% self-centering capability for the SPSW-SCEDB system. The compressive bearing capacity of the wall plate should be smaller than the horizontal remaining restoring force of the braces to achieve better self-centering effect of the system. | ||
Key Words | ||
self-centering brace; steel plate shear wall; cyclic behavior; cyclic loading test; residual drift | ||
Address | ||
Jia-Lin Liu and Long-He Xu: School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China Zhong-Xian Li: Key Laboratory of Coast Civil Structure Safety of China Ministry of Education, Tianjin University, Tianjin 300072, China | ||