全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

带台阶的多级边坡稳定性上限分析

Full-Text   Cite this paper   Add to My Lib

Abstract:

基于极限分析上限法基本原理和强度折减技术,根据滑坡体处于极限状态时两功率相等(虚功率方程)条件,推导了带台阶的多级边坡整体失稳和可能出现的局部失稳安全系数计算公式。并以3级边坡为例,编制优化程序,采用序列二次规划迭代算法计算确定最危险滑动面的位置即对多个可能的滑动面进行搜索,获得安全系数最小(也即稳定性最差)的面作为潜在最危险滑裂面。采用具体算例,对比分析了3级边坡的整体稳定性和可能出现的局部稳定性问题,并由此开展了参数分析。对比分析表明获得的安全系数较已有方法略小,得到的最危险滑动面与已有结果颇为接近,可以验证其有效性和可行性;参数分析表明对均质多级边坡,当某级边坡坡角过大时,边坡更易发生局部失稳;高边坡增设边坡台阶可以有效提高边坡稳定性并降低施工难度。

References

[1]  李亮,褚雪松.多级边坡局部安全稳定性分析的变尺度搜索策略 [J].煤炭学报,2012,37 (7): 1134-1138.LI Liang,CHU Xue- song.Stability Analysis on the Multi-stage Slopes Using Variable Search Dimension Strategy[J].Journal of China Coal Society,2012,37(7): 1134-1138.
[2]  GAO Jing- gang,ZAMAN M M.Analytical Method forAnalysis of Slope Stability [J].International Journal forNumerical and Analytical Methods in Geomechnics,1999,23 (5): 439-449.
[3]  AL- KARNI A A,AL- SHAMRANI M A.Study of theEffect of Soil Anisotropy on Slope Stability Using Method ofSlices [J].Computers and Geotechnics,2000,26(2): 83-103.
[4]  YU H S,SALGADO R,SLOAN S W,et al.LimitAnalysis Versus Limit Equilibrium for Slope Stability [J].Journal of Geotechnical and GeoenvironmentalEngineering,1998,124 (1): 1-11.
[5]  王均星,李泽.考虑孔隙水压力的土坡稳定性的有限元上限分析 [J].岩土力学,2007,28 (2): 213-218.WANG Jun- xing,LI Ze.Upper Bound Analysis ofStability of Soil Slope Subjected to Pore Water PressureUsing Finite Elements [J].Rock and Soil Mechanics,2007,28 (2): 213-218.
[6]  ZHAO Lian- heng,LI Liang,YANG Feng,et al.Evaluating the Effects of the Magnitude of Pseudo- staticForce on Reinforced Slopes Based on the Nonlinear M- CFailure Criterion [J].Electronic Journal of GeotechnicalEngineering,2010,15: 1017-1052
[7]  ZHAO Lian- heng,LI Liang,YANG Feng,et al.UpperBound Analysis of Slope Stability with Nonlinear FailureCriterion Based on Strength Reduction Technique [J].Journal of Central South University of Technology,2010,17 (4): 836-844.
[8]  赵炼恒,李亮,但汉成,等.极限上限分析中 “切线法”引入非线性破坏准则的探讨 [J].长江科学院院报,2010,27 (8): 34-39.
[9]  ZHAO Lian- heng,LI Liang,DAN Han- cheng,et al.Discussion on Generalized Tangential Method Led inNonlinear Failure Criterion in Upper Boundary LimitAnalysis [J].Journal of Yangtze River ScientificResearch Insti,2010,27 (8): 34-39
[10]  ZHAO Wei- feng,ZHAO Lian- heng,DENG Dong- ping.Improved Sliding Surface Search Method for StabilityAnalysis of Complex Slopes [J].Procedia Earth andPlanetary Science,2012,5: 88-93.
[11]  唐高朋,赵炼恒,李亮,等.基于 MATLAB 的边坡稳定性极限上限分析程序开发 [J].岩土力学,2013(7): 2091-2098.TANG Gao- peng,ZHAO Lian- heng,LI Liang,et al.Program Development for Slope Stability Using MATLABSoftware and Upper Bound Limit Analysis [J]Rock andSoil Mechanics,2013 (7): 2091-2098.
[12]  邓东平,李亮,赵炼恒.基于 Janbu 法的边坡整体稳定性滑动面搜索新方法 [J].岩土力学,2011,32(3): 891-898.DENG Dong- ping,LI Liang,ZHAO Lian- heng.A NewMethod of Sliding Surface Searching for General Stability ofSlope Based on Janbu Method [J].Rock and SoilMechanics,2011,32 (3): 891-898.
[13]  李亮,邓东平,赵炼恒.基于滑动面搜索的分层土坡稳定性分析新方法 [J].中南大学学报: 自然科学版,2012,43 (10): 3995-4002.LI Liang,DENG Dong- ping,ZHAO Lian- heng.A NewMethod for Stability Analysis of Layered Slopes Based onSearch of Sliding Surface [J].Journal of Central SouthUniversity: Science and Technology Edition,2012,43(10): 3995-4002.
[14]  CHEN W F.Limit Analysis and Soil Plasticity [M].New York: Elsevier Scientific Publishing Company,1975.
[15]  易建章.基于极限分析的二级边坡稳定性分析方法和研究 [J].湖 南 交 通 科 技,2012,38 (2): 9-11,47.YI Jian- zhang.Analysis on Stability of Two- level SlopeConsidering Limit Analysis [J].Hunan CommunicationsScience and Technology,2012,38 (2): 9-11,47.
[16]  何叔航.加筋二级边坡极限分析方法研究 [J].公路工程,2012,37 (3): 89-91,126.HE Shu- hang.Study of Critical Height for Two- stepsReinforcement Soil Slope Based on Limit Analysis [J].Highway Engineering,2012,37 (3): 89-91,126.
[17]  邓东平.用于三维复杂土坡稳定性分析的滑动面搜索新方法 [D].长沙: 中南大学,2010.DENG Dong- ping.A New Method of Searching SlidingSurface for Stability Analysis of Three- dimensionalComplicated Slope [D].Changsha: Central SouthUniversity,2010.
[18]  杨峰,阳军生,赵炼恒.浅埋隧道工作面破坏模式与支护反力研究 [J].岩土工程学报,2010,02: 279-284.YANG Feng,YANG Jun- sheng,ZHAO Lian- heng.Collapse Mechanism and Support Pressure for ShallowTunnel Face [J].Chinese Journal of GeotechnicalEngineering,2010,32 (2): 279-284.
[19]  BISHOP A W.The Use of the Slip Circle in the StabilityAnalysis of Slopes [J].Géotechique,1955,5 (1): 7-17.
[20]  LYNESS J F,OWEN D R J,ZIENKIEWICZ O C.TheFinite Element Analysis of Engineering Systems Governedby a Non- linear Quasi- harmonic Equation [J].Computer& Structures,1975,5 (1): 65-79.
[21]  DUNCAN J M.Limit Equilibrium and Finite ElementAnalysis of Slopes [J].Journal of GeotechnicalEngineering,1996,122 (7): 577-596.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133