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논문 기본 정보

자료유형
학술저널
저자정보
Hadi Haeri (Sichuan University) V. Sarfarazi (Hamedan University of Technology) Zheming Zhu (Sichuan University) N. Nohekhan Hokmabadi (Yazd University) MR. Moshrefifar (Yazd University) A. Hedayat (Colorado School of Mines)
저널정보
국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.69 No.2
발행연도
2019.1
수록면
221 - 230 (10page)

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In this paper, shear behavior of non-persistent joint surrounded in concrete and gypsum layers has been investigated using experimental test and numerical simulation. Two types of mixture were prepared for this study. The first type consists of water and gypsum that were mixed with a ratio of water/gypsum of 0.6. The second type of mixture, water, sand and cement were mixed with a ratio of 27%, 33% and 40% by weight. Shear behavior of a non-persistent joint embedded in these specimens is studied. Physical models consisting of two edge concrete layers with dimensions of 160 mm by 130 mm by 60 mm and one internal gypsum layer with the dimension of 16 mm by 13 mm by 6 mm were made. Two horizontal edge joints were embedded in concrete beams and one angled joint was created in gypsum layer. Several analyses with joints with angles of 0°, 30°, and 60° degree were conducted. The central fault places in 3 different positions. Along the edge joints, 1.5 cm vertically far from the edge joint face and 3 cm vertically far from the edge joint face. All samples were tested in compression using a universal loading machine and the shear load was induced because of the specimen geometry. Concurrent with the experiments, the extended finite element method (XFEM) was employed to analyze the fracture processes occurring in a non-persistent joint embedded in concrete and gypsum layers using Abaqus, a finite element software platform. The failure pattern of non-persistent cracks (faults) was found to be affected mostly by the central crack and its configuration and the shear strength was found to be related to the failure pattern. Comparison between experimental and corresponding numerical results showed a great agreement. XFEM was found as a capable tool for investigating the fracturing mechanism of rock specimens with non-persistent joint.
#non-persistent joints #uniaxial test #shear behaviour #experimental and numerical approaches

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참고문헌 (56)

참고문헌 신청
Belytschko, T. / 1999 / Elastic crack growth in finite element with minimal remeshing / Int. J. Numer. Meth. Eng 45(5):601~620 google schola Bi, J. / 2016 / The 3D numerical simulation for the propagation process of multiple pre-existing flaws in rock-like materials subjected to biaxial compressive loads / Rock Mech. Rock Eng. 49(5):1611~1627 google schola Bi, J. / 2017 / Numerical simulation of failure process of rock-like materials subjected to impact loads / Int. J. Geomech. 17(3):04016073 google schola Bobet, A. / 1998 / Fracture coalescence in rock-type materials under uniaxial and biaxial compression / Int. J. Rock Mech. Min. Sci 35(7):863~888 google schola M. Boumaaza / 2017 / Behavior of pre-cracked deep beams with composite materials repairs / Structural Engineering and Mechanics, An Int＇l Journal 63(5):575~583 dbpia

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