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논문 기본 정보

자료유형
학술저널
저자정보
Hadi Haeri (Sichuan University) Vahab Sarfarazi (Hamedan University of Technology) Zheming Zhu (Sichuan University) Hossein Ali Lazemi (Islamic Azad University)
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
505 - 516 (12page)

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초록· 키워드

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In this paper, the effects of particle size and model scale of concrete has been investigated on the failure mechanism of PFC2D numerical models under uniaxial compressive test. For this purpose, rectangular models with same particle sizes and different model dimensions, i.e., 3 mm×6 mm, 6 mm×12 mm, 12 mm×24 mm, 25 mm×50 mm and 54 mm×108 mm, were prepared. Also rectangular models with dimension of 54 mm×108 mm and different particle sizes, i.e., 0.27 mm, 0.47 mm, 0.67 mm, 0.87 mm, 1.07 mm, 1.87 mm and 2.27 mm were simulated using PFC2D and tested under uniaxial compressive test. Concurrent with uniaxial test, direct shear test was performed on the numerical models. Dimension of the models were 75×100 mm. Two narrow bands of particles with dimension of 37.5 mm × 20 mm were removed from upper and lower of the model to supply the shear test condition. The particle sizes in the models were 0.47 mm, 0.57 mm, 0.67 mm and 0.77 mm. The result shows that failure pattern was affected by model scale and particle size. The uniaxial compressive strength and shear strength were increased by increasing the model scale and particle size.

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