Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Investigation of Structural Damage in Bearing Wall Buildings with Pilotis by 2017 Pohang Earthquake

2017 포항지진에 의한 필로티형 내력벽건물의 구조손상 분석

  • Eom, Tae Sung (Department of Architectural Engineering, Dankook University) ;
  • Lee, Seung Jae (Department of Architectural Engineering, Dankook University) ;
  • Park, Hong Gun (Department of Architecture, Seoul National University)
  • 엄태성 (단국대학교 건축공학과) ;
  • 이승제 (단국대학교 건축공학과 대학원) ;
  • 박홍근 (서울대학교 건축학과)
  • Received : 2018.10.08
  • Accepted : 2018.11.20
  • Published : 2019.01.01
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Abstract

In 2017 Pohang Earthquake, a number of residential buildings with pilotis at their first level were severely damaged. In this study, the results of an analytical investigation on the seismic performance and structural damage of two bearing wall buildings with pilotis are presented. The vibration mode and lateral force-resisting mechanism of the buildings with vertical and plan irregularity were investigated through elastic analysis. Then, based on the investigations, methods of nonlinear modeling for walls and columns at the piloti level were proposed. By performing nonlinear static and dynamic analyses, structural damages of the walls and columns at the piloti level under 2017 Pohang Earthquake were predicted. The results show that the area and arrangement of walls in the piloti level significantly affected the seismic safety of the buildings. Initially, the lateral resistance of the piloti story was dominated mainly by the walls resisting in-plane shear. After shear cracking and yielding of the walls, the columns showing double-curvature flexural behavior contributed significantly to the residual strength and ductility.

Keywords

References

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