Steel and Composite Structures

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Application of self-centering wall panel with replaceable energy dissipation devices in steel frames

  • Chao, Sisi (School of Civil Engineering, Chang'an University) ;
  • Wu, Hanheng (School of Civil Engineering, Chang'an University) ;
  • Zhou, Tianhua (School of Civil Engineering, Chang'an University) ;
  • Guo, Tao (School of Civil Engineering, Chang'an University) ;
  • Wang, Chenglong (School of Civil Engineering, Chang'an University)
  • Received : 2019.03.21
  • Accepted : 2019.06.01
  • Published : 2019.07.25
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Abstract

The self-centering capacity and energy dissipation performance have been recognized critically for increasing the seismic performance of structures. This paper presents an innovative steel moment frame with self-centering steel reinforced concrete (SRC) wall panel incorporating replaceable energy dissipation devices (SF-SCWD). The self-centering mechanism and energy dissipation mechanism of the structure were validated by cyclic tests. The earthquake resilience of wall panel has the ability to limit structural damage and residual drift, while the energy dissipation devices located at wall toes are used to dissipate energy and reduce the seismic response. The oriented post-tensioned strands provide additional overturning force resistance and help to reduce residual drift. The main parameters were studied by numerical analysis to understand the complex structural behavior of this new system, such as initial stress of post-tensioning strands, yield strength of damper plates and height-width ratio of the wall panel. The static push-over analysis was conducted to investigate the failure process of the SF-SCWD. Moreover, nonlinear time history analysis of the 6-story frame was carried out, which confirmed the availability of the proposed structures in permanent drift mitigation.

Keywords

Acknowledgement

Supported by : Natural Science Foundation of China, Central Universities

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