FLAC 3D强度折减理论在边坡稳定分析中的应用
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摘要
FLAC3D是岩土工程中广泛应用的软件。本文主要介绍强度折减理论的基本原理,利用基于强度折减法的FLAC3D软件,对某高速公路K377+230～K377+520段滑坡体进行数值模拟。计算边坡在自重作用达到初始化平衡状态时,边坡的横向与竖直方向的应力与位移,分析出边坡的破坏机制为牵引式滑坡,通过强度折减理论计算出边坡的稳定系数为0.97,由剪切应变增量云图确定边坡的滑动面。
FLAC 3D is a widely applied software in geotechnical engineering.We mainly introduce the principle of strength reduction theory.Numerical simulation on the K377+230~k377+520 section of a highway has been made by FLAC 3D sofeware based on strength reduction theory.To calculate the slope lateral and vertical stress and displacement when the slope gets to the initialization equilibrium condition in dead weight function,then to analyze the result that the slope failure mechanism was retrogressive landslide;after that to calculate the slope stability coefficient as 0.97 through the strength reduction theory,finally to determine the sliding surface by the shear strain increment chart.
FLAC 3D is a widely applied software in geotechnical engineering.We mainly introduce the principle of strength reduction theory.Numerical simulation on the K377+230~k377+520 section of a highway has been made by FLAC 3D sofeware based on strength reduction theory.To calculate the slope lateral and vertical stress and displacement when the slope gets to the initialization equilibrium condition in dead weight function,then to analyze the result that the slope failure mechanism was retrogressive landslide;after that to calculate the slope stability coefficient as 0.97 through the strength reduction theory,finally to determine the sliding surface by the shear strain increment chart.
引文
[1]宋民崇,余云燕,赵德安.FLAC软件在边坡稳定性分析中的应用[J].黑龙江工程学院学报:自然科学版,2009,12(4):24-27.SONG Min-chong,YU Yun-yan,ZHAO De-an.FLAC inthe application of the slope stability analysis[J].Journalof Heilongjiang Engineering College:Natural Science Edi-tion,2009,12(4):24-27.
[2]彭文斌.FLAC3D使用教程[M].北京:机械工业出版社,2007:212-308.PENG Wen-bin.FLAC3D use tutorial[M].Beijing:Mechanical Industry Press,2007:212-308.
[3]陈祖煜.土质边坡稳定分析的原理和方法[M].北京:中国水利水电科学研究所,2000:45-120.CHEN Zu-yu.Soil slope stability analysis principle andmethod[M].Beijing:China Water Conservancy and Hy-dropower Scientific Research Institute,2000:45-120.
[4]陈育民,徐鼎平.FLAC/FLAC3D基础与工程实例[M].北京:中国水利水电出版社,2008:321-392.CHEN Yu-min,XU Ding-ping.FLAC/FLAC3D founda-tionand engineering example[M].Beijing:China WaterConservancy and Hydropower Press,2008:321-392.
[5]佴磊,徐燕,代树林,等.边坡工程[M].北京:科学出版社,2010:76-137.NIE Lei,XU Yan,DAI Shu-lin,et al.The slope engi-neering[M].Beijing:Science Press,2010:76-137.
[6]刘柱.集安至丹东公路块裂结构岩质边坡破坏机制与锚固机理研究:硕士学位论文[D].长春:吉林大学,2011.LIU Zhu.Set Antu to Dandong highway chipped structurerock slope failure mechanism and anchoring the mecha-nism research:master's degree thesis[D].Changchun:Jilin University,2011.
[7]丛培夫,杨志波.巴东长江公路大桥桥位边坡稳定可靠性研究[J].世界地质,2003,22(3):303-308CONG Pei-fu,YANG Zhi-bo.Research on the reliabilityof the bank slope stability of Badong Yangtze River high-way bridge[J].Global Geology,2003,22(3):303-308.
[8]张丽,李广杰.长白山天池地区斜坡稳定性分析[J].世界地质,2005,24(4):378-381ZHANG Li,LI Guang-jie.Analysis on stability of slopein Tianchi Lake area of Changbaishan Mountain[J].Global Geology,2005,24(4):378-381.
[9]迟世春,关立军.基于强度折减的拉格朗日差分方法分析土坡稳定性[J].岩土工程学报,2004,26(1):42-46.CHI Shi-chun,GUAN Li-jun.Difference method basedon shear strength reduction[J].Chinese Journal ofGeotechnical Engineering,2004,26(1):42-46.
[10]江德飞,何光春.传递系数法与FLAC强度折减法比较分析—以猴子石滑坡分析为例[J].重庆交通学院学报,2005,24(1):94-99.JIANG De-fei,HE Guang-chun.Comparison and analy-sis of transfer coefficient methods and strength reductionmethods of FLAC—an engineer example of Houzishilandslide[J].Journal of Chongqing Jiaotong Universi-ty,2005,24(1):94-99.
[11]刘春玲,祁生文,童立强,等.利用FLAC3D分析某边坡地震稳定性[J].岩石力学与工程学报,2004,23(16):2730-2733.LIU Chun-ling,QI Sheng-wen,TONG Li-qiang,et al.Stability analysis of slope under earthquake withFLAC3D[J].Chinese Journal of Rock Mechanics andEngineering,2004,23(16):2730-2733.
[12]赵尚毅,郑颖人,时卫民,等.用有限元强度折减法求边坡稳定安全系数[J].岩土工程学报,2002,24(3):343-346.ZHAO Shang-yi,ZHENG Ying-ren,SHI Wei-min,etal.Analysis on safety factor of slope by strength reduc-tion FEM[J].Chinese Journal of Geotechnical Engi-neering,2002,24(3):343-346.
[2]彭文斌.FLAC3D使用教程[M].北京:机械工业出版社,2007:212-308.PENG Wen-bin.FLAC3D use tutorial[M].Beijing:Mechanical Industry Press,2007:212-308.
[3]陈祖煜.土质边坡稳定分析的原理和方法[M].北京:中国水利水电科学研究所,2000:45-120.CHEN Zu-yu.Soil slope stability analysis principle andmethod[M].Beijing:China Water Conservancy and Hy-dropower Scientific Research Institute,2000:45-120.
[4]陈育民,徐鼎平.FLAC/FLAC3D基础与工程实例[M].北京:中国水利水电出版社,2008:321-392.CHEN Yu-min,XU Ding-ping.FLAC/FLAC3D founda-tionand engineering example[M].Beijing:China WaterConservancy and Hydropower Press,2008:321-392.
[5]佴磊,徐燕,代树林,等.边坡工程[M].北京:科学出版社,2010:76-137.NIE Lei,XU Yan,DAI Shu-lin,et al.The slope engi-neering[M].Beijing:Science Press,2010:76-137.
[6]刘柱.集安至丹东公路块裂结构岩质边坡破坏机制与锚固机理研究:硕士学位论文[D].长春:吉林大学,2011.LIU Zhu.Set Antu to Dandong highway chipped structurerock slope failure mechanism and anchoring the mecha-nism research:master's degree thesis[D].Changchun:Jilin University,2011.
[7]丛培夫,杨志波.巴东长江公路大桥桥位边坡稳定可靠性研究[J].世界地质,2003,22(3):303-308CONG Pei-fu,YANG Zhi-bo.Research on the reliabilityof the bank slope stability of Badong Yangtze River high-way bridge[J].Global Geology,2003,22(3):303-308.
[8]张丽,李广杰.长白山天池地区斜坡稳定性分析[J].世界地质,2005,24(4):378-381ZHANG Li,LI Guang-jie.Analysis on stability of slopein Tianchi Lake area of Changbaishan Mountain[J].Global Geology,2005,24(4):378-381.
[9]迟世春,关立军.基于强度折减的拉格朗日差分方法分析土坡稳定性[J].岩土工程学报,2004,26(1):42-46.CHI Shi-chun,GUAN Li-jun.Difference method basedon shear strength reduction[J].Chinese Journal ofGeotechnical Engineering,2004,26(1):42-46.
[10]江德飞,何光春.传递系数法与FLAC强度折减法比较分析—以猴子石滑坡分析为例[J].重庆交通学院学报,2005,24(1):94-99.JIANG De-fei,HE Guang-chun.Comparison and analy-sis of transfer coefficient methods and strength reductionmethods of FLAC—an engineer example of Houzishilandslide[J].Journal of Chongqing Jiaotong Universi-ty,2005,24(1):94-99.
[11]刘春玲,祁生文,童立强,等.利用FLAC3D分析某边坡地震稳定性[J].岩石力学与工程学报,2004,23(16):2730-2733.LIU Chun-ling,QI Sheng-wen,TONG Li-qiang,et al.Stability analysis of slope under earthquake withFLAC3D[J].Chinese Journal of Rock Mechanics andEngineering,2004,23(16):2730-2733.
[12]赵尚毅,郑颖人,时卫民,等.用有限元强度折减法求边坡稳定安全系数[J].岩土工程学报,2002,24(3):343-346.ZHAO Shang-yi,ZHENG Ying-ren,SHI Wei-min,etal.Analysis on safety factor of slope by strength reduc-tion FEM[J].Chinese Journal of Geotechnical Engi-neering,2002,24(3):343-346.
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