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A preliminary numerical analysis study on the seismic stability of a building and underground structure by using SSI

SSI를 이용한 건물과 인접지하구조물의 내진 안정성에 대한 기초 수치해석 연구

  • You, Kwang-Ho (School of Civil Environment Energy Engineering, University of Suwon) ;
  • Kim, Young-Jin (School of Civil Environment Energy Engineering, University of Suwon)
  • 유광호 (수원대학교 건설환경에너지공학부) ;
  • 김영진 (수원대학교 건설환경에너지공학부)
  • Received : 2017.11.23
  • Accepted : 2017.12.26
  • Published : 2018.01.31

Abstract

Up to now, most of studies on seismic analysis have been limited to analyze buildings and underground structures individually so that the interaction between them could not be analyzed effectively. Thus, in this study, a dynamic analysis was conducted for soil-structure interaction with a complex underground facility composed of a building and an adjacent underground structure constructed on a surface soil and the bed rock ground conditions. Seismic stability was analyzed based on interstory drift ratio and bending stress of structure members. As a result, an underground structure has more effect on a high-rise building than a low-rise building. However the above structures were proved to be favorable for seismic stability. On the other hand, tensile bending stresses exceeded the allowable value at the underground part of the building and the adjacent underground structure so that it turned out that the underground part could be weaker than the above part. Therefore, it is inferred that above and underground structures should be analyzed simultaneously for better prediction of their interaction behavior during seismic analyses because there exist various structures around buildings in big cities.

Acknowledgement

Supported by : 국가과학기술연구회

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