Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Proposal of Strength-Based Design Procedure for Improving the Seismic Performance of Steel Ordinary Moment Frames

철골 보통모멘트골조의 내진성능 향상을 위한 강도기반 설계 절차 제안

  • Kim, Taeo (Department of Architectural Engineering, Hanyang University) ;
  • Han, Sang Whan (Department of Architectural Engineering, Hanyang University)
  • 김태오 (한양대학교 건축공학과) ;
  • 한상환 (한양대학교 건축공학과)
  • Received : 2023.08.04
  • Accepted : 2023.11.03
  • Published : 2024.01.01
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Abstract

The ductility of the system based on the capacity of each structural member constituting the seismic force-resisting system is a significant factor determining the structure's seismic performance. This study aims to provide a procedure to supplement the current seismic design criteria to secure the system's ductility and improve the seismic performance of the steel ordinary moment frames. For the study, a nonlinear analysis was performed on the 9- and 15-story model buildings, and the formation of collapse mechanisms and damage distribution for dynamic loads were analyzed. As a result of analyzing the nonlinear response and damage distribution of the steel ordinary moment frame, local collapse due to the concentration of structural damage was observed in the case where the influence of the higher mode was dominant. In this study, a procedure to improve the seismic performance and avoid inferior dynamic response was proposed by limiting the strength ratio of the column. The proposed procedure effectively improved the seismic performance of steel ordinary moment frames by reducing the probability of local collapse.

Keywords

Acknowledgement

본 논문은 한국연구재단의 지원(NRF-2017R1A2B3008937) 연구의 일환으로 수행되었음.

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