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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.22 No.4
- 발행연도
- 2018.1
- 수록면
- 459 - 468 (10page)
이용수
초록· 키워드
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In this paper, the effect of non-persistent joints was determined on the behavior of concrete specimens subjected to biaxial loading through numerical modeling using particle flow code in two dimensions (PFC2D). Firstly, a numerical model was calibrated by uniaxial, Brazilian and triaxial experimental results to ensure the conformity of the simulated numerical model’s response. Secondly, sixteen rectangular models with dimension of 100 mm by 100 mm were developed. Each model contains two non-persistent joints with lengths of 40 mm and 20 mm, respectively. The angularity of the larger joint changes from 30° to 90°. In each configuration, the small joint angularity changes from 0° to 90° in 30° increments. All of the models were under confining stress of 1 MPa. By using of the biaxial test configuration, the failure process was visually observed. Discrete element simulations demonstrated that macro shear fractures in models are because of microscopic tensile breakage of a large number of bonded discs. The failure pattern in Rock Bridge is mostly affected by joint overlapping whereas the biaxial strength is closely related to the failure pattern.
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참고문헌 (47)
참고문헌 신청
Şeref Doğuşcan Akbaş / 2016 / Analytical solutions for static bending of edge cracked micro beams / Structural Engineering and Mechanics, An Int＇l Journal 59(3):579~599
Bobet, A / 2000 / The initiation of secondary cracks in compression / Eng. Fract. Mech 66:187~219
Bobet, A / 1998 / Fracture coalescence in rock-type materials under uniaxial and biaxial compression / Int. J. Rock Mech. Min. Sci 35:863~888
Cundall, P.A / 1979 / A discrete numerical model for granular assemblies / Geotechnique 29(1):47~65
Fan, Y / 2016 / The mutual effects between two unequal collinear cracks under compression / Math. and Mech. Solids 22:1205~1218
Bobet, A / 2000 / The initiation of secondary cracks in compression / Eng. Fract. Mech 66:187~219
Bobet, A / 1998 / Fracture coalescence in rock-type materials under uniaxial and biaxial compression / Int. J. Rock Mech. Min. Sci 35:863~888
Cundall, P.A / 1979 / A discrete numerical model for granular assemblies / Geotechnique 29(1):47~65
Fan, Y / 2016 / The mutual effects between two unequal collinear cracks under compression / Math. and Mech. Solids 22:1205~1218
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