A Case Study on the Hybrid Reinforcement Retaining Wall System Reinforced by Soil Nail and Steel Strip

쏘일네일과 강재스트립으로 보강된 복합보강토옹벽 시스템의 사례연구

  • 천병식 (한양대학교 공과대학 토목공학과) ;
  • 김홍택 (한양대학교 공과대학 토목공학과) ;
  • 조현수 (두산건설 토목사업본부) ;
  • 도종남 (한양대학교 대학원 토목공학과)
  • Published : 2008.12.31

Abstract

The reinforced earth wall, which is able to improve the strength of soil highly, is required in case of supporting high surcharge load such as high speed rail way, high embankment road, and massive reinforced earth wall in a mountainous area. And also, it is continuously required that the method is able to minimize the amount of excavated soil on account of environmental issue, boundary of land, etc., on excavation site. However, because the required length of reinforcement should be $60{\sim}80%$ of the height of reinforced earth wall for general reinforced earth wall, in fact the reinforced earth wall is hardly applied on the site of cut slope. In this paper we studied the design and construction cases of hybrid reinforcement retaining wall system combined with steel strips and soil nails, connecting the reinforced earth wall reinforcements to the slope stability reinforcements (soil nails) to ensure sufficient resistance by means of reducing the length of reinforcements of reinforced earth wall. And the feasibility of hybrid reinforcement retaining wall system, suggested by real data measured on site, is also discussed.

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