刚体离散元动力方法在基于位移的岩坡地震响应分析中的应用

doi:10.13722/j.cnki.jrme.2017.1206

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (975 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In the present seismic response analysis of rock slopes，the limit equilibrium method is used to analyze the static safety factor and the Newmark dynamic analysis is used to analyze the dynamic permanent displacement. Their use in engineering practice was limited due to the complexity. In this paper，the rigid body discrete element method is introduced into the evaluation of seismic stability of rock slopes. Combining the rigid body discrete element method with the strength reduction method and Newmark method，a static and dynamic stability analysis method for complex rock slopes is presented. Assuming the large stiffness for joints，the contact displacement caused by the elastic deformation of joints was limited so that the rigid discrete element method can be used to solve the static/dynamic stability of rock wedges. The rigid discrete element method does not need to assume the sliding direction and sliding mode in calculating the safety factor of the rock slope and is therefore very useful in engineering practice with the complex rock wedges. The correctness of the proposed method and the programming in the 3DEC code is demonstrated through comparisons with 4 classical static examples and 3 dynamic examples. Parameter studies confirmed that the proposed rigid discrete element method is capable of obtaining the correct trend of variation according to the changing parameters. It was found that under certain conditions the pseudo static safety factor cannot reflect correctly the extent of the earthquake response of the rock slope. In the case study，the seismic stability evaluation of K1 block based on the displacement was carried out with the rigid discrete element method. The results with the rigid discrete element method were better than those from the method of pseudo static safety factor.

Key words： slope engineering rock slopes seismic stability rigid discrete element method permanent displacement Newmark s method

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	CUI Zhen
	SHENG Qian
	MA Yalina

Cite this article:

CUI Zhen,SHENG Qian,MA Yalina. Application of rigid discrete element method in the displacement-based seismic stability analysis of rock slopes[J]. , 2017, 36(11): 2672-2685.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.1206 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/I11/2672

[1] HOEK E，BRAY J W. Rock slope engineering[M]. 4th ed. New York：Spon Press，2005：123–125.
[2] YOSSEF H H. Keyblock stability in seismically active rock slopes—Snake Path Cliff，Masada[J]. Journal of Geotechnical and Geoenvironmental Engineering，2003，129(8)：697–705.
[3] KUMSAR H，AYDAN O，ULUSAY R. Dynamic and static stability assessment of rock slopes against wedge failures[J]. Rock Mechanics and Rock Engineering，2000，33(1)：31–51.
[4] 姜清辉，刘献华，位伟，等. 岩质边坡楔体稳定分析与临界滑面搜索[J]. 岩石力学与工程学报，2013，32(1)：24–33.(JIANG Qinghui，LIU Xianhua，WEI Wei，et al. Wedge stability analysis for rock slope and search for critical slip surfaces[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(1)：24–33.(in Chinese))
[5] 巨能攀，赵建军，黄润秋，等. 基于3DEC的边坡块体稳定性分析[J]. 辽宁工程技术大学学报：自然科学版，2009，28(6)：925–928.(JU Nengpan，ZHAO Jianjun，HUANG Runqiu，et al. 3D stability analysis on rock slope blocks using 3DEC method[J]. Journal of Liaoning Technical University：Natural Science，2009，28(6)：925–928.(in Chinese))
[6] 周家文，徐卫亚，石崇. 基于3DEC的节理岩体边坡地震影响下的楔体稳定性分析[J]. 岩石力学与工程学报，2007，26(增1)： 3 402–3 409.(ZHOU Jiawen，XU Weiya，SHI Chong. Wedge stability analysis of jointed rockmass slope considering seismic influences based on 3DEC[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.1)：3 402–3 409.(in Chinese))
[7] JIANG Q H，LIU X H，WEI W，et al. A new method for analyzing the stability of rock wedges[J]. International Journal of Rock Mechanics and Mining Sciences，2013，60：413–422.
[8] GOODMAN R E，SHI G H. Block theory and its application to rock engineering[M]. New Jersey：Prentice-Hall，Inc.，1985：56–64.
[9] 陈春舒，夏元友. 基于极限分析的边坡实时动态Newmark滑块位移法[J]. 岩石力学与工程学报，2016，35(12)：2 507–2 515.(CHEN Chunshu，XIA Yuanyou. A real-time dynamic Newmark sliding block method for slopes based on limit analysis[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(12)：2 507–2 515.(in Chinese))
[10] 沈华章，郭明伟，王水林，等. 基于离散元的边坡矢量和稳定分析方法研究[J]. 岩土力学，2016，37(2)：592–600.(SHEN Huazhang，GUO Mingwei，WANG Shuilin，et al. Vector sum method for slope stability analysis based on discrete elements[J]. Rock and Soil Mechanics，2016，37(2)：592–600.(in Chinese))
[11] 张雨霆，丁秀丽，卢波. 基于数值分析的岩石块体稳定性评价一般性方法[J]. 岩石力学与工程学报，2017，36(1)：78–92.(ZHANG Yuting，DING Xiuli，LU Bo. General method for stability evaluation of rock blocks based on numerical simulation[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(1)：78–92.(in Chinese))

[12] 陈菲，邓建辉. 岩坡稳定的三维强度折减法分析[J]. 岩石力学与工程学报，2006，25(12)：2 546–2 551.(CHEN Fei，DENG Jianhui. Three-dimensional stability analysis of rock slope with strength reduction method[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(12)：2 546–2 551.(in Chinese))
[13] 朱永生，朱焕春，石安池，等. 基于离散单元法的白鹤滩水电站复杂块体稳定性分析[J]. 岩石力学与工程学报，2011，30(10)：2 068–2 075.(ZHU Yongsheng，ZHU Huanchun，SHI Anchi，et al. Complicated block stability analysis of Baihetan hydropower station based on distinct element method[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(10)：2 068–2 075.(in Chinese))
[14] STEAD D，EBERHARDT E，COGGAN J S. Developments in the characterization of complex rock slope deformation and failure using numerical modelling techniques[J]. Engineering Geology，2006，83(1/3)：217–235.
[15] NEWMARK N M. Effects of earthquakes on dams and embankments[J]. Géotechnique，1965，15(2)：139–160.
[16] 毛彦龙，胡广韬，毛新虎，等. 地震滑坡启程剧动的机理研究及离散元模拟[J]. 工程地质学报，2001，(1)：74–80.(MAO Yanlong，HU Guangtao，MAO Xinhu，et al. Mechanism of set -out violent -slide of slope mass during earthquake and its simulation by using discrete element method[J]. Journal of Engineering Geology，2001，(1)：74–80.(in Chinese))
[17] 朱焕春，BRUMMER R，ANDRIEUX P. 节理岩体数值计算方法及其应用(一)：方法与讨论[J]. 岩石力学与工程学报，2004，23(20)：3 444–3 449.(ZHU Huanchun，BRUMMER R，ANDRIEUX P. Numerical methods and application for jointed rock mass，part 1：approaches and discussions[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(20)：3 444–3 449.(in Chinese))
[18] LIU Y Q，LI H B，XIAO K Q，et al. Seismic stability analysis of a layered rock slope[J]. Computers and Geotechnics，2014，55：474–481.
[19] Itasca Consulting Group. 3DEC user's manual(version 5.2)[R]. Minneapolis，USA：Itasca Consulting Group，2016.
[20] MANYA D，CARLO G. L，MARIO M. Displacement – based parametric study on the seismic response of gravity earth-retaining walls[J]. Soil Dynamics and Earthquake Engineering，2016，80(1)：210–224.
[21] JIBSON R W，JIBSON M W. Java programs for using newmark's method and simplified decoupled analysis to model slope performance during earthquakes[R]. [S.l.]：U.S. Geological Survey，2003.
[22] GHOSH A，HAUPT W. Computation of the seismic stability of rock wedges[J]. Rock Mechanics and Rock Engineering，1989，22(2)： 109–125.
[23] HOE I L，ALEXANDER H D. Rock sliding induced by seismic force[J]. International Journal of Rock Mechanics and Mining Sciences，1997，34(6)：1 021–1 029.