›› 2014, Vol. 35 ›› Issue (S1): 407-413.

• Numerical Analysis • Previous Articles     Next Articles

A strength reduction finite element method based on softening properties analysis for 3D slope

SUN Cong, LI Chun-guang, ZHENG Hong, SUN Guan-hua   

  1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2013-10-29 Online:2014-06-10 Published:2014-06-20

PDF (Chinese)

1326

Abstract: A new strength reduction finite element method is established based on the principle of strength reduction technology. We take the process of the strength parameters reduction as a brittle plastic stress drop course; and a strength reduction increment is set as convergence condition to determine whether the program out of circulation. The final reduction factor is the safety factor of slope stability. The theory can be easily extended to the three-dimensional slope stability analysis with high precision, and can find the sliding surface of the slope and its development tendency of failure. Through two case stidoes, the importance of the 3D slope model is shown; and it is suggested that when the geological condition is complex, we should carry out analysis from the three-dimensional angle rather than simply it to the two-dimensional problems.

Key words: strength reduction finite element method, stress drop course, brittle-plasticity, 3D slope stability analysis

CLC Number: 

  • O 242.21
[1] TU Yi-liang, LIU Xin-rong, ZHONG Zu-liang, DU Li-bing, WANG Peng, . The unity of three types of slope failure criteria [J]. , 2018, 39(1): 173-180.
[2] LI Rong-jian ，ZHENG Wen ，LIU Jun-ding ，YAN Rui ，SHAO Sheng-jun , . Evaluation of stability of structural loess slope considering initial structural parameters [J]. , 2014, 35(1): 143-150.
[3] DU Zuo-long , HUANG Mao-song . Analysis for basal stability of braced excavation in nonhomogeneous and anisotropic clay [J]. , 2013, 34(2): 455-461.
[4] YU Shen-guang ，BIE She-an ，LI Wei ，WANG Chu-sheng ，MA Yong . Research on slip arc mode and deformation stability of bank slope on high-piled wharf [J]. , 2013, 34(1): 227-234.
[5] ZHONG Cai-gen , ZHANG Bin. Transformation of slope safety factor based on different Drucker-Prager criteria [J]. , 2011, 32(12): 3751-3754.
[6] RUAN Chang-qing，TU Yu-Min YU Ya-nan. Study of limit sliding resistance force on retaining structure with tenon [J]. , 2010, 31(8): 2514-2518.
[7] NIAN Ting-kai, WAN Shao-shi, JIANG Jing-cai, LUAN Mao-tian. Finite element analysis of slope stability under drawdown conditions by strength reduction technique [J]. , 2010, 31(7): 2264-2269.
[8] WAN Shao-shi, NIAN Ting-kai, JIANG Jing-cai, LUAN Mao-tian. Discussion on several issues in slope stability analysis based on shear strength reduction finite element methods (SSR-FEM) [J]. , 2010, 31(7): 2283-2288.
[9] LI Zhan, LUAN Mao-tian. Pseudo-static stability calculation of earth and rockfill dams using shear strength reduction finite element method [J]. , 2010, 31(5): 1503-1508.
[10] ZHANG Hong , ZHENG Ying-ren , YANG Zhen , WANG Qian-yuan , GE Su-ming. Exploration of design methods of support structure in loess tunnel [J]. , 2009, 30(S2): 473-478.
[11] YANG Xue-qiang，LING Ping-ping，XIANG Sheng-hua. Comments on slope stability based on a series of Drucker-Prager failure criteria [J]. , 2009, 30(4): 865-870.
[12] LI Rong-jian, YU Yu-zhen, DENG Li-jun, LI Guang-xin. Discussion on stability analysis of unsaturated soil slopes [J]. , 2007, 28(10): 2060-2064.
[13] ZHANG Li-ming , ZHENG Ying-ren , WANG Zai-quan , WANG Jian-xin . Application of strength reduction finite element method to road tunnels [J]. , 2007, 28(1): 97-101.
[14] SHI Gui-cai , GE Xiu-run， . Object-oriented finite element method and programming by combining VC++ with Matlab [J]. , 2005, 26(12): 2005-2009.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] CHU Xi-hua, XU Yuan-jie. Studies on transformation from M-C criterion to Drucker-Prager criterions based on distortion energy density[J]. , 2009, 30(10): 2985 -2990 .
[2] LIU Dou-dou, CHEN Wei-zhong, YANG Jian-ping, TAN Xian-jun, ZHOU X. Experimental research on strength characteristic of brittle rock unloading confining pressure[J]. , 2009, 30(9): 2588 -2594 .
[3] SUN Ping, PENG Jian-bing, YIN Yue-ping, WU Shu-ren. Tensile test and simulation analysis of fracture process of loess[J]. , 2010, 31(2): 633 -637 .
[4] ZHANG Xian-wei, WANG Chang-ming, LI Jun-xia, MA Dong-he, CHEN Duo-cai. Variation characteristics of soft clay micropore in creep condition[J]. , 2010, 31(4): 1061 -1067 .
[5] WANG Gui-yao，LI Bin，LUO Jun，FU Hong-yuan. Study of soil-water charactiristics and matric suction measurement device for unsaturated silty soil[J]. , 2010, 31(11): 3678 -3682 .
[6] LU Ying-fa, CHENG Zhu-lei, XIE Wen-liang, Lü Zhi-zhong. Application of geotechnics to sanitation landfill of refuse[J]. , 2009, 30(1): 91 -98 .
[7] WANG Zhi-ping，HU Min-yun，XIA Ling-tao. Research on compressibility of municipal solid waste by laboratory tests[J]. , 2009, 30(6): 1681 -1686 .
[8] JIA Qiang, YING Hui-qing, ZHANG Xin. Construction of basement in existing buildings by static bolt-pile[J]. , 2009, 30(7): 2053 -2057 .
[9] SHI Cheng-hua，PENG Li-min，LEI Ming-feng. Study of time-space united calculating method of stratum deformation caused by shield tunnel excavation[J]. , 2009, 30(8): 2379 -2384 .
[10] LU Jun-fu，WANG Ming-nian，JIA Yuan-yuan，YU Yu， TAN Zhong-sheng. Research on construction time of secondary lining of large section loess tunnel for high-speed railway[J]. , 2011, 32(3): 843 -848 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd