한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2004년도 춘계학술발표회
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- Pages.356-363
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- 2004
다양한 시험법에 의한 토목섬유 사이의 접촉 전단 강도 평가
Evaluation of interface shear strength between geosynthetics using three kinds of testing methods
- Seo, Min-Woo (School of Civil Urban & Geosystem Engineering Department, Seoul National University) ;
- Park, Jun-Boum (School of Civil Urban & Geosystem Engineering Department, Seoul National University) ;
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Park, Inn-Jun
(Dept. of Civil Engineering, Hanseo University)
- 발행 : 2004.03.25
초록
In this research, the shear behavior of four different interfaces consisting of 4 types of geosynthetics was examined, and both static and dynamic tests for the geosynthetic interface were conducted. The monotonic shear experiments were performed by using an inclined board apparatus and large direct shear device. The interface shear strength obtained from the inclined board tests were compared with those calculated from large direct shear tests. The comparison results indicated that direct shear tests are likely to overestimate the shear strength in low normal stress range where direct shear tests were not performed. Curved failure envelopes were also obtained for interface cases where two static shear tests were conducted. By comparing the friction angles measured from three tests, i.e. direct shear, inclined board, and shaking table tests, it was found that the friction angle might be different depending on the test method and normal stresses applied in this research. Therefore, it was concluded that the testing method should be determined carefully by considering the type of loads and the normal stress expected in the field.