Calculation of residual sliding force of slope based on finite element method
LIU Sujin1，2，GUO Mingwei1，LIU Caihua1
(1. State Key Laboratory of Geomechanics Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China；2. University of Chinese Academy of Sciences，Beijing 100049，China)
Calculation of landslide thrust is always a key problem in reinforcing design of slopes. Currently，there is an inconsistency issue existing in Chinese technical code for building slope engineering with regard to the thrust calculation using the transfer coefficient method，which is largely caused by the inaccurate assumption about the stress state of a slope. Aimingto overcome this issue，a new method considering the vector characteristics of sliding and anti-sliding forceswas proposed and adopted to calculate the residual sliding force of a local potentially sliding body. Not only the sliding force but also the sliding direction of a potentially unstable slope can be evaluated by the proposed method. Several examples were illustrated and thecalculated results of the safety factor of slopeswere in good agreement with the rigorous limit equilibrium method. Finally，the proposed method was applied to analyze a typical fold line slope of Zhangmu town，in the Tibet of China，and the residual sliding force calculated by the proposed method also agrees well with the result from the transfer coefficient method.
刘素锦1，2，郭明伟1，刘才华1. 边坡下滑推力计算的有限元法[J]. 岩石力学与工程学报, 2017, 36(S2): 4054-4065.
LIU Sujin1，2，GUO Mingwei1，LIU Caihua1. Calculation of residual sliding force of slope based on finite element method. , 2017, 36(S2): 4054-4065.
中华人民共和国国家标准编写组. GB 50330—2002建筑边坡工程技术规范[S]. 北京：中国建筑工业出版社，2003.(The National Standards Compilation Group of People¢s Republic of China. GB 50330—2002Technical code for building slope engineering[J]. Beijing：China Architecture and Building Press，2003.(in Chinese))
[2]
中华人民共和国国家标准编写组. GB 50330—2013 建筑边坡工程技术规范[S]. 北京：中国建筑工业出版社，2013.(The National Standards Compilation Group of People¢s Republic of China. GB 50330—2013 Technical code for building slope engineering[S]. Beijing：China Architecture and Building Press，2013.(in Chinese))
[3]
时卫民，郑颖人，唐伯明，等.边坡稳定不平衡推力法的精度分析及其使用条件[J]. 岩土工程学报，2004，26(3)：313-317.(SHI Weimin，ZHENG Yingren，TANG Boming，et al. Accuracy and application range of imbalance thrust force method for slope stability analysis[J]. Chinese Journal of Geotechnical Engineering，2004，26(3)：313-317.(in Chinese))
[4]
张鲁渝，郑颖人，时卫民. 边坡稳定分析中关于不平衡推力法的讨论[J]，岩石力学与工程学报，2005，24(1)：177-182.(ZHANG Yulu，ZHENG Yingren，SHI Weimin. on slope stability by imbalance thrust force method[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(1)：177-182.(in Chinese))
[5]
胡修文，唐辉明，刘佑荣. 传递系数法的模型试验验证[J]. 岩土力学，2005，26(1)：63-66.(HU Xiuwen，TANG Huiming，LIU Yourong. Verification of transfer coefficient method applied to landslide stability analysis by physical model test[J]. Rock and Soil Mechanics，2005，26(1)：63-66.(in Chinese))
[6]
邵宁生. 边坡下滑推力的计算分析[J]. 常州工学院学报，2008，21(B10)：81-84.(SHAO Ningsheng. Calculation and analysis of sliding force of slope[J]. Journal of Changzhou Institute of Technology，2008，21(B10)：81-84.(in Chinese))
[7]
苏爱军，冯明权. 滑坡稳定性传递系数计算法的改进[J].地质灾害与环境保护，2002，13(3)：51-55.(SU Aijun，FENG Mingquan. Improving on transfer coefficient method applied to landslide stability analysis and landslide thrust value calculation[J]. Journal of Geological Hazards and Environment Preservation，2002，13(3)：51-55.(in Chinese))
[8]
易朋莹，唐红梅. 对用传递系数法求滑坡稳定系数的商榷——以万州太白岩中东段欠稳定斜坡为例[J]. 重庆交通学院学报，2004，23(1)：78-80.(YI Pengying，TANG Hongmei. Discussion about calculating the stabilization coefficient through transferring coefficient method—Wanzhou Taibaiyuan middle east segment unstable slopes as the example[J]. Journal of Chongqing Jiaotong University，2004，23(1)：78-80.(in Chinese))
[9]
许建聪，尚岳全. 碎石土古滑坡稳定性分析[J]. 岩石力学与工程学报，2007，26(1)：57-65.(XU Jiancong，SHANG Yuequan. Stability analysis of ancient debris landslide[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(1)：57-65.(in Chinese))
[10]
胡云进，速宝玉，周维垣. 有地表入渗的岩坡稳定性分析[J]. 岩石力学与工程学报，2003，22(7)：1112-1116.(HU Yunjin，SU Baoyu，ZHOU Weiyuan. Analysis on the stability of rock slope with surface infiltration[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(7)：1112-1116.(in Chinese))
[11]
谭晓慧，余 兵，王茂松，等. 水库边坡稳定的可靠度分析[J]. 岩土力学，2008，29(12)：3427-3430.(TAN Xiaohui，YU Bing，WANG Maosong，et al. Reliability analysis of reservoir slope stability[J]. Rock and Soil Mechanics，2008，29(12)：3427-3430.(in Chinese))
[12]
李荣建，刘军定，闫 蕊，等. 在边坡局部失稳中传递系数法与强度折减法的计算比较[J]. 西安理工大学学报，2013，29(3)：260-265.(LI Rongjian，LIU Junding，YAN Rui，et al. The calculation comparison of transfer coefficient method with strength reduction finite element method in slope local instability[J]. Journal of Xi¢an University of Technology，2013，29(3)：260-265.(in Chinese))
[13]
顾宝和，毛尚之. 滑坡稳定分析传递系数法的讨论[J].工程勘察，2006，(12)：8-12.(GU Baohe，MAO Shangzhi. Discussion on method of force transfer for stability analysis of slope[J]. Journal of Geotechnical Investigation and Surveying，2006，(12)：8-12.(in Chinese))
2017, Vol. 36 
