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A Study on the Bahavior and Failure Mechanism of Soil Nailing Walls using Centrifuge Model Tests

원심모형실험을 이용한 소일네일링 벽체의 거동 및 파괴메카니즘에 관한 연구

  • Kim, Young-Gil (Department of Civil Engineering, Hallym Polytechnic University)
  • 김영길 (한림성심대학교 토목과)
  • Received : 2011.10.27
  • Accepted : 2011.12.13
  • Published : 2011.12.31

Abstract

Current design and analyzing methods about soil nailing structures, developed on the basis of results obtained from experiments in laboratory or in field and numerical analyses, have applied different interaction mechanisms between the reinforced nails and the surrounding ground, and different safety factors against failure have been obtained. They might be proper approaches if the assumptions about rigidity of nails and ground conditions are met with actual conditions occurred in field. Otherwise, they would result in designing on analyzing in inappropriate ways so that it is needed to evaluate the validity of them. Therefore, in this research using the Centrifugal Model Testing, numerical parameters experiments about soil nailing structures' behavior and failure mechanism were performed. In the numerical parameters experiments, transmuted nail's length, setting angle, nail's front panel, stiffness variously, and increased the level of gravity until wall model was destroyed. Based on experimental results, we compared the effect, failure mechanism caused from parameters changes. By reviewing and comparing centrifugal model test results and methods currently in use, verified validity of existing methods.

Keywords

Soil nailing wall;G-level;Parametric centrifuge model tests;Selfweight test

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