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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.69 No.1
- 발행연도
- 2019.1
- 수록면
- 11 - 20 (10page)
이용수
초록· 키워드
오류제보하기
The biaxial failure mechanism of transversally bedding concrete layers was numerically simulated using a sophisticated two-dimensional discrete element method (DEM) implemented in the particle flow code (PFC2D). This numerical modelling code was first calibrated by uniaxial compression and Brazilian testing results to ensure the conformity of the simulated numerical model’s response. Secondly, 21 rectangular models with dimension of 54 mm×108 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 were 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 noted 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 (64)
참고문헌 신청
Cundall, P. A. / 1979 / A discrete numerical model for granular assemblies / Geotech 29(1):47~65
Dai, Z. / 2016 / Dual-support smoothed particle hydrodynamics for elastic mechanics / Int. J. Comput. Meth 14(4):1750039
Dinh, Q. D. / 2013 / Brazilian tensile strength tests on some anisotropic rocks / Int. J. Rock Mech. Min. Sci 58:1~7
Ghazvinian, A. / 2013 / Shear behavior of inherently anisotropic rocks / Int. J. Rock Mech. Min. Sci 61:96~110
Haeri, H. / 2015 / Propagation mechanism of neighboring cracks in rock-like cylindrical specimens under uniaxial compression / J. Min. Sci 51(3):487~496
Dai, Z. / 2016 / Dual-support smoothed particle hydrodynamics for elastic mechanics / Int. J. Comput. Meth 14(4):1750039
Dinh, Q. D. / 2013 / Brazilian tensile strength tests on some anisotropic rocks / Int. J. Rock Mech. Min. Sci 58:1~7
Ghazvinian, A. / 2013 / Shear behavior of inherently anisotropic rocks / Int. J. Rock Mech. Min. Sci 61:96~110
Haeri, H. / 2015 / Propagation mechanism of neighboring cracks in rock-like cylindrical specimens under uniaxial compression / J. Min. Sci 51(3):487~496
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