Steel and Composite Structures

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Seismic performance evaluation of steel moment frames with self-centering energy-dissipating coupled wall panels

  • Lu Sui (School of Civil Engineering, Chang'an University) ;
  • Hanheng Wu (School of Civil Engineering, Chang'an University) ;
  • Menglong Tao (School of Civil Engineering, Chang'an University) ;
  • Zhichao Jia (School of Civil Engineering, Chang'an University) ;
  • Tianhua Zhou (School of Civil Engineering, Chang'an University)
  • Received : 2022.11.23
  • Accepted : 2023.05.17
  • Published : 2023.06.10
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Abstract

The self-centering energy-dissipating coupled wall panels (SECWs) possess a dual capacity of resiliency and energy dissipation. Used in steel frames, the SECWs can localize the damage of structures and reduce residual drifts. Based on OpenSEES, the nonlinear models were established and validated by experimental results. The seismic design procedure of steel frame with SECW structures (SF-SECW) was proposed in accordance with four-level seismic fortification objectives. Nonlinear time-history response analyses were carried out to validate the reasonability of seismic design procedure for 6-story and 12-story structures. Results show that the inter-story drifts of designed structures are less than drift limits. According to incremental dynamic analyses (IDA), the fragility curves of mentioned-above structure models under different limit states were obtained. The results indicate that designed structures have good seismic performance and meet the seismic fortification objectives.

Keywords

Acknowledgement

The research described in this paper was financially supported by Natural Science Foundation of Shaanxi province, China (No. 2023-JC-YB-295), and Fundamental Research Funds of Chang'an University (No. 300102282204, No. 300102282718). The supports are gratefully acknowledged. Any opinions, findings, conclusions, and recommendations expressed in this paper are those of the writers and do not necessarily reflect the views of the sponsors.

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