基于强度折减法的转角边坡三维稳定性分析
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摘要
采用有限元软件ABAQUS建立三维土质边坡模型,基于强度折减法研究了边坡稳定性与坡转角的关系,以及坡转角对边坡稳定性与坡高、坡角和边坡长度关系的影响。结果表明,边坡安全系数随着坡转角的增大会逐渐降低;坡转角对边坡安全系数与坡高、坡角关系的影响较小,但对于边坡安全系数与边坡长度关系的影响较大,且当坡角较大时,坡转角对安全系数与边坡长度的关系的影响就较小;当坡角较小时,坡转角对安全系数与边坡长度的关系的影响就较大。
In this paper, the finite element software is used to establish three-dimensional soil slope models. The strength reduction method is used to analyze the relationship between the slope safety factor and the slope rotation angles. The influence of the slope rotation angles on the slope safety factors and the relationship between slope heights, slope angles and slope lengths are investigated. The results show that the slope safety factor gradually decrease with the increase of the rotation angles; the slope rotation angles have little effects on the relationship between slope safety factors and slope heights and slope angles, but the slope rotation angles have an obvious effect on the relationship between the slope safety factors and the slope lengths. When the slope angle is large, the slope rotation angles have little effects on the relationship between the safety factors and slope lengths. When the slope angles are small, the slope rotation angles have an obvious influence on the relationship between the safety factors and slope lengths.
In this paper, the finite element software is used to establish three-dimensional soil slope models. The strength reduction method is used to analyze the relationship between the slope safety factor and the slope rotation angles. The influence of the slope rotation angles on the slope safety factors and the relationship between slope heights, slope angles and slope lengths are investigated. The results show that the slope safety factor gradually decrease with the increase of the rotation angles; the slope rotation angles have little effects on the relationship between slope safety factors and slope heights and slope angles, but the slope rotation angles have an obvious effect on the relationship between the slope safety factors and the slope lengths. When the slope angle is large, the slope rotation angles have little effects on the relationship between the safety factors and slope lengths. When the slope angles are small, the slope rotation angles have an obvious influence on the relationship between the safety factors and slope lengths.
引文
[1] 郑宏.严格三维极限平衡法[J].岩石力学与工程学报,2007,26(8):1529-1537.
[2] 朱大勇,钱七虎.三维边坡严格与准严格极限平衡法解答及工程应用[J].岩石力学与工程学报,2007,26(8):1513-1528.
[3] 陈雪珍,简文彬.基于强度折减法的分步施工边坡稳定性分析[J].水利与建筑工程学报,2018,16(1):207-210.
[4] 李大茂,张国辉,袁从华.基于数值仿真的全强风化岩质边坡失稳机制研究[J].水利与建筑工程学报,2017,15(2):205-209.
[5] 李永亮,周国胜,李永鹏.有限元强度折减法边坡失稳判据的适用性研究[J].水利与建筑工程学报,2018,16(5):125-129.
[6] 李红,宫必宁,陈琰.有限元强度折减法边坡失稳判据[J].水利与建筑工程学报,2007,5(1):79-82.
[7] 陈国庆,黄润秋,石豫川,等.基于动态和整体强度折减法的边坡稳定性分析[J].岩石力学与工程学报,2014,33(2):243-256
[8] 陈国庆,黄润秋,周辉,等.边坡渐进破坏的动态强度折减法研究[J].岩土力学,2013,34(4):1140-1146.
[9] 白冰,袁维,石露,等.一种双折减法与经典强度折减法的关系[J].岩土力学,2015,36(5):1275-1281.
[10] RymaAfiri, Smail Gabi. Finite element slope stability analysis of Souk Tleta dam by shear strength reduction technique[J]. Current Landscape Ecology Reports, 2018,3(1):1-10.
[11] Lim K, Li A J, Schmid A, et al. Slope-stability assessments using finite-element limit-analysis methods[J]. International journal of geomechanics, 2017,17(2):6016017.
[12] Wang Xiang Rong, Wang Hui, Liang Robert Y. A method for slope stability analysis considering subsurface stratigraphic uncertainty[J]. Landslides, 2018,15(5):925-936.
[13] Xu J S, Yang X L. Three-dimensional stability analysis of slope in unsaturated soils considering strength nonlinearity under water drawdown[J]. Engineering Geology, 2018,237:102-115.
[14] 田双珠,李越松,黄敬东,等.天津港二突堤转角区域码头结构与土体三维有限元分析[J].水道港口,2007,28(4):270-273.
[15] 王凯,闫永富,吕国慧.某露天矿斜坡路转角处路堑稳定性分析及治理措施[J].现代矿业,2015(8):176-177.
[2] 朱大勇,钱七虎.三维边坡严格与准严格极限平衡法解答及工程应用[J].岩石力学与工程学报,2007,26(8):1513-1528.
[3] 陈雪珍,简文彬.基于强度折减法的分步施工边坡稳定性分析[J].水利与建筑工程学报,2018,16(1):207-210.
[4] 李大茂,张国辉,袁从华.基于数值仿真的全强风化岩质边坡失稳机制研究[J].水利与建筑工程学报,2017,15(2):205-209.
[5] 李永亮,周国胜,李永鹏.有限元强度折减法边坡失稳判据的适用性研究[J].水利与建筑工程学报,2018,16(5):125-129.
[6] 李红,宫必宁,陈琰.有限元强度折减法边坡失稳判据[J].水利与建筑工程学报,2007,5(1):79-82.
[7] 陈国庆,黄润秋,石豫川,等.基于动态和整体强度折减法的边坡稳定性分析[J].岩石力学与工程学报,2014,33(2):243-256
[8] 陈国庆,黄润秋,周辉,等.边坡渐进破坏的动态强度折减法研究[J].岩土力学,2013,34(4):1140-1146.
[9] 白冰,袁维,石露,等.一种双折减法与经典强度折减法的关系[J].岩土力学,2015,36(5):1275-1281.
[10] RymaAfiri, Smail Gabi. Finite element slope stability analysis of Souk Tleta dam by shear strength reduction technique[J]. Current Landscape Ecology Reports, 2018,3(1):1-10.
[11] Lim K, Li A J, Schmid A, et al. Slope-stability assessments using finite-element limit-analysis methods[J]. International journal of geomechanics, 2017,17(2):6016017.
[12] Wang Xiang Rong, Wang Hui, Liang Robert Y. A method for slope stability analysis considering subsurface stratigraphic uncertainty[J]. Landslides, 2018,15(5):925-936.
[13] Xu J S, Yang X L. Three-dimensional stability analysis of slope in unsaturated soils considering strength nonlinearity under water drawdown[J]. Engineering Geology, 2018,237:102-115.
[14] 田双珠,李越松,黄敬东,等.天津港二突堤转角区域码头结构与土体三维有限元分析[J].水道港口,2007,28(4):270-273.
[15] 王凯,闫永富,吕国慧.某露天矿斜坡路转角处路堑稳定性分析及治理措施[J].现代矿业,2015(8):176-177.