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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.19 No.1
- 발행연도
- 2017.1
- 수록면
- 99 - 110 (12page)
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초록· 키워드
오류제보하기
In this paper, the effect of normal load on the failure mechanism of echelon joint has been studied using PFC2D. In the first step, calibration of PFC was undertaken with respect to the data obtained from experimental laboratory tests. Then, six different models consisting various echelon joint were prepared and tested under two low and high normal loads. Furthermore, validation of the simulated models were cross checked with the results of direct shear tests performed on non-persistent jointed physical models. The simulations demonstrated that failure patterns were mostly influenced by normal loading, while the shear strength was linked to failure mechanism. When ligament angle is less than 90°, the stable crack growth length is increased by increasing the normal loading. In this condition, fish eyes failure pattern occur in rock bridge. With higher ligament angles, the rock bridge was broken under high normal loading. Applying higher normal loading increases the number of fracture sets while dilation angle and mean orientations of fracture sets with respect to ligament direction will be decreased.
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참고문헌 (46)
참고문헌 신청
Bahaaddini, M. / 2013 / Numerical investigation of the effect of joint geometrical parameters on the mechanical properties of a non-persistent jointed rock mass under uniaxial compression / Comput. Geotech. 49:206~225
Bazant, Z. P. / 1990 / Random particle model for fracture of aggregate or fiber composites / J. Eng. Mech., ASCE 116(8):1686~1705
Bobet, A. / 1998 / Fracture coalescence in rock-type materials under uniaxial and biaxial compression / J. Rock Mech. Min. Sci. 35(7):863~888
Cho, N. / 2007 / A clumped particle model for rock / J. Rock Mech. Min. Sci. 44(7):997~1010
Cho, N. / 2008 / Development of a shear zone in brittle rock subjected to direct shear / J. Rock Mech. Min. Sci. 45(8):1335~1346
Bazant, Z. P. / 1990 / Random particle model for fracture of aggregate or fiber composites / J. Eng. Mech., ASCE 116(8):1686~1705
Bobet, A. / 1998 / Fracture coalescence in rock-type materials under uniaxial and biaxial compression / J. Rock Mech. Min. Sci. 35(7):863~888
Cho, N. / 2007 / A clumped particle model for rock / J. Rock Mech. Min. Sci. 44(7):997~1010
Cho, N. / 2008 / Development of a shear zone in brittle rock subjected to direct shear / J. Rock Mech. Min. Sci. 45(8):1335~1346
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