Steel and Composite Structures

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Experimental study on component performance in steel plate shear wall with self-centering braces

  • Liu, Jia-Lin (School of Civil Engineering, Beijing Jiaotong University) ;
  • Xu, Long-He (School of Civil Engineering, Beijing Jiaotong University) ;
  • Li, Zhong-Xian (Key Laboratory of Coast Civil Structure Safety of China Ministry of Education, Tianjin University)
  • Received : 2019.10.14
  • Accepted : 2020.10.13
  • Published : 2020.11.10
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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.

Keywords

Acknowledgement

The writers gratefully acknowledge the partial support of this research by the National Natural Science Foundation of China under Grant No. 52078036.

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