Application of a ductile connection system to steel MRF strengthened with hinged walls

Zhi Zhang, Yulong Feng, Dichuan Zhang, Zuanfeng Pan

Research output: Contribution to journalArticlepeer-review

Abstract

Steel moment resisting frames (MRFs) typically have inter-story drift concentrations at lower stories during earthquakes as found from previous research. Hinged walls (HWs) can be used as structural strengthening components to force the MRFs deform uniformly along the building height. However, large moment demands are often observed on HWs and make the design of HWs non-economical. This paper proposes a method to reduce the moment demand on HWs using a ductile connection system between the MRFs and the HWs. The ductile connection system is designed with a yield strength and energy dissipation capacity, for the purpose of limiting the seismic forces transferred to the HWs and dissipating seismic energy. Nonlinear time history analyses were performed using 10 far-filed earthquakes at maximum considered earthquake level. The analysis results show that the proposed ductile connection system can reduce: (1) seismic moment demands in the HWs; (2) floor accelerations; (3) the connection force between HWs and MRFs.

Original languageEnglish
Pages (from-to)487-498
Number of pages12
JournalSteel and Composite Structures
Volume51
Issue number5
DOIs
Publication statusPublished - Jun 10 2024

Keywords

  • ductile connection system
  • hinged wall
  • seismic performance
  • steel moment resisting frame

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Metals and Alloys

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