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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 73 - 77 (5page)
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초록· 키워드
오류제보하기
Soil rock mixture (SRM) is a special geological material with non-uniform rock distribution, non-continuous cementation between rock and soil, and size effect structural characteristics, hence, possessing mechanical properties different from rock or soil. Field survey indicated that the surface layer of SRM above the rock slope was almost unstable under cyclic loading; however, at the same time, the slope itself was stable. This phenomenon exceeded initial judgments, thus it was important to study the mechanical characteristics of SRM under cyclic loading. Numerical simulation using continuum-based discrete element method was employed to study the strength degradation and failure mechanism of SRM under different frequencies, dynamic stress amplitudes and durations. Results show that the peak stress gradually increased with the increasing dynamic stress amplitude and frequency, but decreased with the increasing percentage of rock because the stiffness decreased greatly under cyclic loading. At the same time, the elasticity modulus decreased gradually with the dynamic stress amplitude and increasing frequency.
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참고문헌 (25)
참고문헌 신청
Araei, A. A. / 2012 / Loading frequency effect on stiffness, damping and cyclic strength of modeled rockfill materials / Soil Dynamics and Earthquake Engineering 33(1?18):5
Cao, Z. / 2011 / Gravelly soils that liquefied during 2008 Wenchuan, China earthquake, Ms¼8.0 / Journal of Soil Dynamics and Earthquake Engineering 31:1132~1143
Chigira, M. / 2010 / Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China / Journal of Geomorphology 118:225~238
Donaghe, R. T. / 1994 / Acompaction test method for soil-rock mixtures in which equipment size effects are minimized / Geotechnical Testing Journal 17:363~370
Fan, X. / 2012 / Transient water and sediment storage of the decaying landslide dams induced by the 2008Wenchuan earthquake, China / Journal of Geomorphology 171-172:58~68
Cao, Z. / 2011 / Gravelly soils that liquefied during 2008 Wenchuan, China earthquake, Ms¼8.0 / Journal of Soil Dynamics and Earthquake Engineering 31:1132~1143
Chigira, M. / 2010 / Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China / Journal of Geomorphology 118:225~238
Donaghe, R. T. / 1994 / Acompaction test method for soil-rock mixtures in which equipment size effects are minimized / Geotechnical Testing Journal 17:363~370
Fan, X. / 2012 / Transient water and sediment storage of the decaying landslide dams induced by the 2008Wenchuan earthquake, China / Journal of Geomorphology 171-172:58~68
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