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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
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.67 No.5
- 발행연도
- 2018.1
- 수록면
- 493 - 504 (12page)
이용수
초록· 키워드
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In this paper, the tensile failure behaviour of transversally bedding layers was numerically simulated by using particle flow code in two dimensions. Firstly, numerical model was calibrated by uniaxial, Brazilian and triaxial experimental results to ensure the conformity of the simulated numerical model’s response. Secondly, 21 circular models with diameter of 54 mm were built. Each model contains two transversely bedding layers. The first bedding layer has low mechanical properties, less than mechanical properties of intact material, and second bedding layer has high mechanical properties, more than mechanical properties of intact material. The angle of first bedding layer, with weak mechanical properties, related to loading direction was 0°, 15°, 30°, 45°, 60°, 75° and 90° while the angle of second layer, with high mechanical properties, related to loading direction was 90°, 105°, 120°, 135°, 150°,160° and 180°. Is to be note that the angle between bedding layer was 90° in all bedding configurations. Also, three different pairs of the thickness was chosen in models; i.e., 5 mm/10 mm, 10 mm/10 mm and 20 mm/10 mm. The result shows that In all configurations, shear cracks develop between the weaker bedding layers. Shear cracks angel related to normal load change from 0° to 90° with increment of 15°. Numbers of shear cracks are constant by increasing the bedding thickness. It’s to be note that in some configuration, tensile cracks develop through the intact area of material model. There is not any failure in direction of bedding plane interface with higher strength.
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참고문헌 (74)
참고문헌 신청
Amadei, B. / 1996 / Importance of anisotropy when estimating and measuring in situ stresses in rock / Int. J. Rock Mech. Min. Sci. 33(3):293~325
Bahaaddini, M. / 2014 / Scale effect on the shear behaviour of rock joints based on a numerical study / Eng. Geol. 181:212~223
Bahaaddini, M. / 2016 / Numerical study of the mechanical behavior of nonpersistent jointed rock masses / Int. J. Geomech. 16(1):1~10
Bahaaddini, M. / 2016 / Experimental and numerical study of asperity degradation in the direct shear test / Eng. Geol. 204:41~52
Cho, J.W. / 2012 / Deformation and strength anisotropy of Asan gneiss, Boryeong shale, and Yeoncheon schist / Int. J. Rock Mech. Min. Sci. 50:158~169
Bahaaddini, M. / 2014 / Scale effect on the shear behaviour of rock joints based on a numerical study / Eng. Geol. 181:212~223
Bahaaddini, M. / 2016 / Numerical study of the mechanical behavior of nonpersistent jointed rock masses / Int. J. Geomech. 16(1):1~10
Bahaaddini, M. / 2016 / Experimental and numerical study of asperity degradation in the direct shear test / Eng. Geol. 204:41~52
Cho, J.W. / 2012 / Deformation and strength anisotropy of Asan gneiss, Boryeong shale, and Yeoncheon schist / Int. J. Rock Mech. Min. Sci. 50:158~169
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