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Modification of Response Displacement Method for Seismic Design of Underground Structures under Domestic Conditions

국내 특성이 반영된 지하구조물의 내진설계를 위한 수정응답변위법

  • 김명철 ((주)수성엔지니어링) ;
  • 김영일 ((주)평화엔지니어링) ;
  • 조우연 (연세대학교 건설공학연구소) ;
  • 김문겸 (연세대학교 사회환경시스템공학부)
  • Published : 2004.04.01

Abstract

In this study. the Modified Response Displacement Method(MRDM) for seismic design of underground box-type structures is proposed. Firstly, to investigate the applicability of the conventional RDM, various parametric studies are performed according to buried depth and soil conditions. Results from the conventional RDM are compared with those of time history analysis in terms of the maximum bending moment and relative displacement. The comparison shows that the velocity response spectrum and the determination method of foundation modulus which significantly influence the accuracy of RDM should be modified. Thus, the modified velocity response spectrum and the new determination method of foundation modulus are proposed under consideration of domestic conditions. In order to demonstrate the accuracy and validity of the proposed MRDM numerical analyses are performed according to different parameters such as depth of base rock, height and width of box, buried depth and soil condition. the comparison with the results of the time history analysis verifies the feasibility of the proposed MRDM for the seismic analysis.

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