Geotechnical Engineering (한국지반공학회지:지반)

Korean Geotechnical Society (한국지반공학회)
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Field Measurements of Compaction-Induced Lateral Earth Pressure on a Reversed-T Type Retaining Wall

역 T형 옹벽에 뒤채움다짐으로 유발된 횡토압의 현장계측

  • 정성교 (동아대학교 공과대학 토목공학과) ;
  • 이만렬 (박사대학교 공과대학 토목공학과 박사후 과정, 동아대학교 공과대학 토목공학과) ;
  • 정진교
  • Published : 1995.06.01
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Abstract

A Compaction-induced lateral earth pressure was measured for a reversed-T type retaining wall of 4m high for three months. As a result of in-situ measurements, the lateral earth pressure fluctuated sharply with time after backfill, which was closely dependent upon the displacement of the retaining wall. The measured results showed big discrepancy with theoretical predictions made by existing theories, which are applicable to rigid wall. However, the in -situ data twas compared relatively well with those obtained by the finite element method. Analysis showed that the discrepancy may be caused by the displacement of the retaining wall during the compaction of the backfill.

높이 4m의 역 T형 옹벽에 다짐으로 뒤채움할 경우에 유발되는 토압을 측정하기 위하여 3개월 동안에 현장실험을 실시하였다. 옹벽에 작용하는 토압은 뒤채움이 완료된 후 시일이 경과함에 따라 큰 폭으로 변화하였으며, 옹벽의 변위와도 밀접한 관계가 있음을 알 수 있었다. 토압의 계측결과는 강성옹벽에 적용가능한 이론식에 의한 것보다 훨씬 크게 얻어졌었다. 유한요소해석에 의하여 얻어진 결과는 계측치와의 사이에 정량적인 차이는 있지만, 비교적 좋은 경향성을 보여 주었다. 그리고 기존의 이론식에서 보인 과소평가는 뒤채움이 진행되는 동안에 유발되는 옹벽의 변위 때문인 것으로 생각되었다.

Keywords

References

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