Failure Mechanism of Geosynthetic-Reinforced Segmental Retaining Wall in a Tiered Configuration

계단식 보강토옹벽의 파괴 메카니즘 연구

  • 유충식 (성균관대학교 토목환경공학과) ;
  • 정혁상 (대정컨설턴트 터널설계부) ;
  • 이봉원 (성균관대학교 토목환경공학과)
  • Published : 2004.12.30

Abstract

This paper presents the results of an investigation on the failure mechanism of geosynthetic-reinforced segmental retaining walls in tiered arrangement using reduced-scale model tests. In this laboratory model tests, a reduced scale model of the full-scale geosynthetic-reinforced wall which was constructed in Geotechnical Experimental Site at Sungkyunkwan University was used to perform a study on the failure mechanism. In order to a high degree of realism, the geometry of the wall and the material properties were selected applying Similitude Laws was used to perform laboratory model tests. And contrary to the previous failure tests with various surcharge pressures, the failure by the tired wall weight was observed. Primary variables considered in the model tests include the different offset distance between the tiers and the different reinforcement length in the lower tier and as a result of the parametric study, a different failure pattern was observed.