Development of the Method for Liquefaction Hazard Microzonation in Korean Coastal Areas

국내 연안지역의 액상화 재해도 작성기법 개발

  • 곽창원 ((주) 청석엔지니어링) ;
  • 최재순 (연세대학교 공과대학 토목공학과) ;
  • 강규진 (연세대학교 공과대학 토목공학과) ;
  • 김수일 (연세대학교 공과대학 토목공학과)
  • Published : 2002.03.01

Abstract

Reclaimed coastal areas for the construction of ports and harbors are in general subjected to strong possibility of liquefaction. In this research, a new method for liquefaction hazard microzonation based on liquefaction settlements was developed. Severity of liquefaction hazard was defined by liquefaction settlements obtained from the method proposed by Tokimatsu and Seed. 10 coastal areas, representing typical geological and geotechnical characteristics of Korean ports and harbors, and 3 real earthquake records for site response analysis were selected. From this research, liquefaction settlement criteria is adapted as a new quantitative index for the liquefaction hazard microzonation. Liquefaction settlements were also compared with LPI (Liquefaction Potential Index), obtained from the assessment of liquefaction potential based on the modified Seed and Idriss's method. As an example, 2 and 3 dimensional liquefaction hazard microzonations of Pusan port and harbor area were mapped by overlapped liquefaction settlement contours.

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