孔隙水压力效应下挡土墙主动土压力上限解

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英文篇名：Upper bound solutions of active earth pressure of retaining wall considering pore water pressure 作者：张佳华 ; 石奥 ; 张标 英文作者：Zhang Jiahua;Shi Ao;Zhang Biao;Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines,Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines,Hunan University of Science and Technology;School of Resource Environment and Safety Engineering,Hunan University of Science and Technology;School of Civil Engineering,Hunan University of Science and Technology; 关键词：极限分析上限定理 ; 孔隙水压力 ; 主动土压力 ; 破裂面 英文关键词：upper bound theorem of limit analysis;;pore water pressure;;active earth pressure;;failure surface 中文刊名：CDSZ 英文刊名：Journal of Hunan University of Arts and Science(Science and Technology) 机构：湖南科技大学南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室煤矿安全开采技术湖南省重点实验室;湖南科技大学资源环境与安全工程学院;湖南科技大学土木工程学院; 出版日期：2019-04-30 出版单位：湖南文理学院学报(自然科学版) 年：2019 期：v.31;No.101 基金：国家自然科学基金项目(51804113);; 湖南科技大学博士启动基金资助项目(E51768);湖南科技大学博士后科研基金项目(E61610);; 南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室开放基金项目(E21734) 语种：中文; 页：CDSZ201902019 页数：6 CN：02 ISSN：43-1420/N 分类号：83-87+97

摘要

孔隙水是影响土体稳定性的主要因素。本文将孔隙水压力视为外力作用在土体上,采用极限分析上限定理推导出孔隙水效应下主动土压力的解析解,并且采用穷举法得到了主动土压力的最大值以及最危险破裂面。研究表明:土体的抗剪强度指标、地表荷载、孔隙水对挡土墙的主动土压力以及土体潜在破裂面的位置有显著影响,其中孔隙水的影响最大,建议在实际工程中进行防排水设计,尽量减小孔隙水的影响。
        Pore water is a main factor of affecting the soil stability. The pore water pressure is regarded as an external force acting on the soil. The analytical solution of active earth pressure under the effect of pore water is derived with the upper bound theorem, and the maximum of active earth pressure and the most dangerous failure surface are obtained by the exhaustive method. The results show that the shear strength index of soil, surface load and pore water have significant effects on the active earth pressure and the location of potential failure surface. It is suggested that waterproof and drainage design should be carried out, and the influence of pore water should be minimized in actual projects.

引文

[1]彭明祥.挡土墙主动土压力的库仑统一解[J].岩土力学,2009,30(2):1 783-1 788.
    [2]廖俊展,苗峰.基于上限分析法的有限宽度土体土压力计算[J].地下空间与工程学报,2016,12(z2):577-581.
    [3]刘洋,于鹏强.刚性挡土墙平移模式的土拱形状与主动土压力分析[J].岩土力学,2019,40(2):1-12.
    [4]杨贵,王阳阳,刘彦辰.基于曲线滑裂面的挡墙主动土压力分析[J].岩土力学,2017,38(8):2 182-2 188.
    [5]芮瑞,叶雨秋,陈成,等.考虑墙壁摩擦影响的挡土墙主动土压力非线性分布研究[J].岩土力学,2019,40(5):1-8.
    [6]Lin Y,Leng W,Yang G,et al.Seismic active earth pressure of cohesive-frictional soil on retaining wall based on a slice analysis method[J].Soil Dynamics and Earthquake Engineering,2015,70:133-147.
    [7]Huang F,Zhang D,Sun Z,et al.Influence of pore water pressure on upper bound analysis of collapse shape for square tunnel in Hoek-Brown media[J].Journal of Central South University of Technology,2011,18(2):530-535.
    [8]J H Shin.Analytical and combined numerical methods evaluating pore water pressure on tunnels[J].Géotechnique,2010,60(2):141-145.
    [9]A W Bishop.The use of the slip circle in the stability analysis of slopes[J].Géotechnique,1955,5(1):7-17.
    [10]R L Michalowski,S S Nadukuru.Three-dimensional limit analysis of slopes with pore pressure[J].Journal of Geotechnical and Geoenvironmental Engineering,2013,139(9):1 604-1 610.
    [11]Zhang J,Li Y,Xu J.Energy analysis of face stability of deep rock tunnels using nonlinear Hoek-Brown failure criterion[J].Journal of Central South University,2015,22(8):3 079-3 086.
    [12]Pan Q,D Dias.The effect of pore water pressure on tunnel face stability[J].International Journal for Numerical and Analytical Methods in Geomechanics,2016,40(15):2 123-2 136.
    [13]W F Chen.Limit analysis and soil plasticity[M].Florida:J.Ross Publishing,Inc,2007.