Geotechnical Engineering (한국지반공학회지:지반)

Korean Geotechnical Society (한국지반공학회)
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Evaluation of Weathered Granite Soil l Geogrid Friction Properties and Pull out Test

화강 풍화토/지오그리드 인발시험 및 마찰특성 평가

  • 조삼덕 (정회원, 한국건설기술연구원, 수석 연구원) ;
  • 김진만 (정회원, 한국건설기술연구원.)
  • Published : 1996.08.01
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Abstract

The pull -out test has been used to investigate the friction properties between soil and grid type geosynthetics which is useful to measure the passive bearing resistance as well as the skin friction. In this paper, the friction properties between geogrid and a weathered granite soil are investigated by performing various pull-out tests. From the test results, a rational pull out test equipment and test method is suggested by evaluating the effects of major factors (such as geogrid width, location of soil box facing, vertical loads and pulll -out displacement rate, etc.) on pull -out test results.

그리드(grid) 형태의 토목섬유와 흙 사이의 마찰특성은 표면마찰 뿐만아니라 그리드에 의한 수동저항을 동시에 측정할 수 있는 인발시험(pull-out test)에 의해 평가되고 있다. 본 연구에서는 보강토 구조물에서 가장 많이 사용되고 있는 지오그리드(geogrid)와 국내에 널리 분포되어 있는 화강 풍화토를 대상으로 실내 인발시험을 수행하였으며, 인발시험의 주요 영향 인자들인 인발속도, 토조 전면벽의 위치, 지오그리드 시료의 폭 및 지오그리드 수동 저항부재의 유.무 등이 흙/지오그리드 마찰특성에 미치는 영향을 평가하였다.

Keywords

References

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