A Control Value Analysis on the Horizontal Displacement of Braced Excavation Walls Used In Korea

국내 적용되고 있는 흙막이구조물의 수평변위에 대한 관리기준치 분석

  • 정상국 (송원대학 철도시설토목과) ;
  • 양재혁 (여수대학교 해양시스템학부) ;
  • 김주현 (서울시립대학교 토목공학과) ;
  • 김종수 (현대산업개발 토목설계팀)
  • Received : 2001.06.02
  • Published : 2001.10.31

Abstract

This study aims to present a more reasonable control value than the exiting one by comparing and analyzing control values and field instrument8tion values of the whole excavation depth of the four case sites, using geometric averaging as a statistical method. The range of the study is confined to the horizontal displacement of braced excavation walls among a variety of items, prescribed in the control values by approximately of the allowable and design values, and by safety factors. As a result, it is desirable to revise 70, 90, and 100 percent of LEVEL I, II, and III, respectively. The horizontal displacement values of the allowable and design values approximations should change to 104, 133, and 148 percent of the allowable and design values, respectively. In addition, modifying the horizontal displacement control value of the braced excavation walls is not needed. The horizontal displacement value, presented in the control value as a safety factor, is now 1.19, as it has a slight difference from the present value.

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