한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2006년도 춘계 학술발표회 논문집
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- Pages.760-767
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- 2006
인공 삼각 돌출부의 거칠기 발현특성
Roughness Mobilization Characteristics of Artificial Triangular Asperities
- Hong, Eun-Soo (Geotechnical Engineering Div., KIGAM) ;
- Choi, Sung-Oong (Geotechnical Engineering Div., KIGAM) ;
- Lee, In-Mo (Dept. of Civil and Environmental Engineering, Korea University)
- 발행 : 2006.03.24
초록
Underestimation of rock joint shear strength comes from an inadequate consideration of roughness mobilization behavior, which is changed by asperity size as well applied normal load. In this study, we performed rock joint shear tests, and studied the roughness mobilization characteristics related with the scale of normal stress and asperities. Test specimens with artificial triangular asperities were manufactured. The specimens consisted of 3 types, and each type represented unevenness, waviness and total roughness(superposition of unevenness and waviness). The experimental results show that the roughness mobilization characteristics are varied by the scale of normal stress and asperities. Furthermore, the investigation shows that the rate of geometrical component and mechanical component in the total roughness is also varied by the scale of normal stress and asperities. These results suggest that we should consider the roughness mobilization characteristics for the roughness quantification and the shear strength modelling.
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