Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
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Critical Failure Condition of Reinforced Earth Wall by Photograph

사진촬영을 통한 보강토옹벽의 파괴조건 연구

  • Ju, Jae-Woo (Dept. of Civil Engineering, Univ. of Sunchon) ;
  • Kim, Seong-Tae (Dept. of Civil Engineering, Univ. of Sunchon) ;
  • Kim, Jae-Young (Division of the College Biological Resources Science Bioresource Systems Engineering, College of Agriculture, Univ. of Chonbok) ;
  • Chang, Yong-Chai (Dept. of Ocean Civil Engineering, Univ. of Mokpo Maritime) ;
  • Cho, Sam-Deok (Div. of Geotechnical Eng. KICT)
  • 주재우 (순천대학교 공과대학 토목공학과) ;
  • 김성태 (순천대학교 대학원 토목공학과) ;
  • 김재영 (전북대학교 농과대학 생물자원시스템공학부) ;
  • 장용채 (목포해양대학교 해양및조선공학부) ;
  • 조삼덕 (한국건설기술연구원 지반연구실)
  • Published : 2004.03.25
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Abstract

Recently the geosynthetics reinforced retaining wall has been widely used instead of the steel reinforced retaining wall. The geosynthetics reinforced retaining wall is a very dangerous structure if the geosynthetics lose their strength about tension or if it lose their pullout resistence, but it was known that the geosynthetics reinforced wall had a great resistence and was a very safe structure against a earthquake or a dynamic load. It can be said that most important factors in the stability of the geosynthetics reinforced wall are the horizontal length of reinforcement and the vertical distance between two reinforcements. That is to say, as the length of reinforcement is longer, the structure is more stable and as the vertical distance between two reinforcements is shorter, it is more stable. In this study, in order to get the critical condition with a safety rate of 1, various kinds of model tests about geosynthetics reinforced wall has been performed. Photos by B-shutter method has been taken during tests and from photos, which show us the failure state, the critical condition about failure has been conformed. Accordingly the equation, which says the limit of stability in geosynthetics reinforced wall., has been proposed.

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