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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.66 No.4
- 발행연도
- 2018.1
- 수록면
- 445 - 452 (8page)
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초록· 키워드
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In this paper the effects of particle size and model scale of concrete have been investigated on point load index, tensile strength, and the failure processes using a PFC2D numerical modeling study. Circular and semi-circular specimens of concrete were numerically modeled using the same particle size, 0.27 mm, but with different model diameters of 75 mm, 54 mm, 25 mm, and 12.5 mm. In addition, circular and semi-circular models with the diameter of 27 mm and particle sizes of 0.27 mm, 0.47 mm, 0.67 mm, 0.87 mm, 1.07 mm, and 1.27 mm were simulated to determine whether they can match the experimental observations from point load and Brazilian tests. The numerical modeling results show that the failure patterns are influenced by the model scale and particle size, as expected. Both Is(50) and Brazilian tensile strength values increased as the model diameter and particle sizes increased. The ratio of Brazilian tensile strength to Is(50) showed a reduction as the particle size increased but did not change with the increase in the model scale.
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참고문헌 (72)
참고문헌 신청
Al-Busaidi, A. / 2005 / Distinct element modeling of hydraulically fractured lac du bonnet granite / J. Geophys. Res. 110:B06302
Aoki, K. / Evaluation of Behavior of EDZ around Rock Cavern by AE Measurements and DEM Simulation Using Bonded Particle Model
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Bahaaddini, M. / 2014 / Parametric study of smooth joint parameters on the shear behaviour of rock joints / Rock Mech. Rock. Eng. 48(3):923~940
Bahaaddini, M. / 2013 / Numerical direct shear tests to model the shear behaviour of rock joints / Comput. Geotech. 51:101~115
Aoki, K. / Evaluation of Behavior of EDZ around Rock Cavern by AE Measurements and DEM Simulation Using Bonded Particle Model
ASTM / 2002 / Standard Test Method for Determination of the Point Load Strength Index of Rock, ASTM D 5731-02 / Am Soc Test Mater
Bahaaddini, M. / 2014 / Parametric study of smooth joint parameters on the shear behaviour of rock joints / Rock Mech. Rock. Eng. 48(3):923~940
Bahaaddini, M. / 2013 / Numerical direct shear tests to model the shear behaviour of rock joints / Comput. Geotech. 51:101~115
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