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条形基础荷载对边坡稳定性影响与加固研究

何思明, 张晓曦, 欧阳朝军

何思明, 张晓曦, 欧阳朝军. 条形基础荷载对边坡稳定性影响与加固研究[J]. 岩土工程学报, 2011, 33(12): 1980-1986.
引用本文: 何思明, 张晓曦, 欧阳朝军. 条形基础荷载对边坡稳定性影响与加固研究[J]. 岩土工程学报, 2011, 33(12): 1980-1986.
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HE Si-ming, ZHANG Xiao-xi, OUYANG Chao-jun. Influences of loads of stripe footing on slope stability and its reinforcement[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(12): 1980-1986.
Citation: HE Si-ming, ZHANG Xiao-xi, OUYANG Chao-jun. Influences of loads of stripe footing on slope stability and its reinforcement[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(12): 1980-1986.
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条形基础荷载对边坡稳定性影响与加固研究  English Version

  • (1. 中国科学院山地灾害与地表过程重点实验室 ，四川 成都 610041 ； 2. 中国科学院水利部成都山地灾害与环境研究所，四川 成都 610041 ； 3. 西南交通大学土木工程学院，四川 成都 610031)

基金项目: 国家重点基础研究发展计划项目（ 2008CB425802 ）；国家 自然科学基金项目（ 40872181 ）
详细信息
    作者简介:

    何思明 (1968 – ) ，男，四川遂宁人，博士，研究员，博士生导师，主要从事山地灾害形成机制及防治技术方面的研究工作。

  • 中图分类号: TU47

Influences of loads of stripe footing on slope stability and its reinforcement

  • (1. Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Chengdu 610041 , China; 2. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; 3. Department of Geotechnical Engineering ， Southwest Jiaotong University, Chengdu 610031, China)

摘要

    摘要
  • 摘要: 西部山区土地资源贫乏，为了合理地利用土地资源经常在边坡上修筑各类建筑物与构筑物，由于基础荷载会影响边坡的稳定性，荷载过大甚至会引起滑坡，造成生命与财产的重大危害。对此，以坡顶条形基础荷载作用于边坡稳定性为研究模型，应用 M-C 线性破坏准则结合极限分析上限定理，分析附加应力对边坡稳定性的影响。对于稳定性较差的土质边坡，采用抗滑桩进行超前支护，研究地震荷载作用下超前支护桩加固边坡的抗力荷载、临界屈服加速度的影响因素。为坡顶条形基础荷载下边坡稳定性分析与超前支护设计提供一种合理的计算方法。
    Abstract: Based on its deformation characteristics under the flexible foundation, the composite ground is divided into four parts, including fill, cushion, composite foundation and underlying layer. Through the analysis of a typical element, a simplified analytical model, which considers the above four parts as an interactive system and allows for the relative movement between piles and soils and assumes different settlements of foundation soil at the same level plane, is presented. And then according to the compatibility of stress and deformation on the interfaces between these four components, the formulas for the settlement and the stress ratio of pile-soil, which is used to characterize the behaviors of the composite ground, are derived. Finally, it is demonstrated that the results from this solution are in accordance with the measured ones of a project. So the proposed method can reflect the working behaviors of the composite ground under the flexible foundation favorably .
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    • 参考文献(13)
  • [1] GB 5007 — 2002 建筑地基基础设计规范 [S]. 2002. (GB 5007 — 2002 Building foundation design code [S] . 2002. (in Chinese))
    [2] YANG Xiao-li, YIN Jian-hua. Slope stability analysis with non-linear failure criterion[J]. Journal of Engineering Mechanics, 2004, 130 : 267 – 273.
    [3] AUSILIO E, CONTE E, DENTE G . Stability analysis of slopes reinforced with piles[J]. Computers and Geotechnics, 2001, 28 : 591 – 611.
    [4] YU H S, SALGADO R, SLOAN S W, et al. Limit analysis versus limit equilibrium for slope stability[J]. Journal of Geotechnical and Geo-environmental Engineering, 1998, 124 : 1 – 11.
    [5] LING H I, LESHCHINSKY D, PERRY E B. Seismic design and performance of geo-synthetic reinforced soil structures [J]. Géotechnique , 1997, 47 (5): 933 – 952.
    [6] MICHALOWSKI R L. Soil reinforcement for seismic design of geotechnical structures[J]. Computers and Geotechnics, 1998, 23 : 1 – 17.
    [7] YANG Xiao-li. Seismic displacement of rock slopes with nonlinear Hoek–Brown failure criterion[J]. International Journal of Rock Mechanics & Mining Sciences, 2007, 44 : 948 – 95.
    [8] MICHALOWSKI R L. Slope stability analysis a kinematical approach[J]. Géotechnique , 1995, 45 (2): 283 – 293.
    [9] JIANG J C, BAKER R, YAMAGAMI T. The effect of strength envelope nonlinearity on slope stability calculations [J]. Can Geotech, 2003, 40 (2): 308 – 25.
    [10] 何思明 , 王全才 . 人工高切坡的长期强度指标研究 [J]. 四川大学学报 ( 工程科学版 ), 2005, 37 (6): 26 – 37. (HE Si-ming, WANG Quan-cai. Study on long term strength index of high cut slop[J]. Journal of Sichuan University (Engineering Science Edition), 2005, 37 (6): 26 – 37. (in Chinese) )
    [11] 何思明 , 李新坡 . 高切坡半隧道超前支护结构研究 [J]. 岩石力学与工程学报 , 2008, 27 (A02): 3827 – 3832. (HE Si-ming, LI Xin-po. Study on pre-reinforced half-tunnel structure in high cut slope[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27 (A02): 3827 – 3832. (in Chinese))
    [12] 何思明 , 李新坡 , 王成华 . 高切坡超前支护锚杆作用机制研究 [J]. 岩土力学 , 2007, 28 (5): 1050 – 1054. (HE Si-ming, LI Xin-po WANG Cheng-hua. Mechanism on interaction between pre-reinforced anchor bolt and rock mass in high cutting slope[J]. Rock and Soil Mechanics, 2007, 28 (5): 1050 – 1054. (in Chinese) )
    [13] 何思明 , 李新坡 . 高切坡超前支护桩作用 机制研究 [J]. 四川大学学报 ( 工程科学版 ), 2008, 40 (3): 43 – 46. (HE Si-ming, LI Xin-po, Study on the interaction between high cutting slope and pre-embedded piles[J]. Journal of Sichuan University (Engineering Science Edition), 2008, 40 (3): 43 – 46. (in Chinese) )
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  • 发布日期:  2011-12-14

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