Earthquakes and Structures

  • 제18권6호
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  • Pages.667-675
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  • 2020
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Structure-soil-structure interaction in a group of buildings using 3D nonlinear analyses

  • 투고 : 2019.12.30
  • 심사 : 2020.06.09
  • 발행 : 2020.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

The current study compares the effect of structure-soil-structure interaction (SSSI) on the dynamic responses of adjacent buildings and isolated structures including soil-structure interaction (SSI) with the responses of fixed-base structures. Structural responses such as the relative acceleration, displacement, drift and shear force were considered under earthquake ground motion excitation. For this purpose, 5-, 10- and 15-story structures with 2-bay moment resisting frames resting on shallow foundations were modeled as a group of buildings in soft soil media. Viscous lateral boundaries and interface elements were applied to the soil model to simulate semi-infinite soil media, frictional contact and probable slip under seismic excitation. The direct method was employed for fully nonlinear time-history dynamic analysis in OpenSees using 3D finite element soil-structure models with different building positions. The results showed that the responses of the grouped structures were strongly influenced by the adjacent structures. The responses were as much as 4 times greater for drift and 2.3 times greater for shear force than the responses of fixed-base models.

키워드

참고문헌

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피인용 문헌

  1. Slope topography effect on the seismic response of mid-rise buildings considering topography-soil-structure interaction vol.20, pp.2, 2020, https://doi.org/10.12989/eas.2021.20.2.187
  2. SSI effects on the redistribution of seismic forces in one-storey R/C buildings vol.20, pp.3, 2021, https://doi.org/10.12989/eas.2021.20.3.261