| 非线性强度准则下抗滑桩加固边坡稳定性极限分析研究 |
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| 引用本文： | 马晓宁,荀航,孙国柱,李伟亮.非线性强度准则下抗滑桩加固边坡稳定性极限分析研究[J].中州煤炭,2022,0(5):19-24. |
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| 作者姓名： | 马晓宁 荀航 孙国柱 李伟亮 |
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| 作者单位： | 1.张家口市京北岩土工程有限公司，河北 张家口075000； 2.张家口市建筑设计院有限责任公司，河北 张家口075000 |
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| 摘 要： | 鉴于现有的极限平衡方法不能很好地反映非线性强度准则下抗滑桩加固边坡的作用原理，利用土压力理论提出简易的抗滑桩和边坡滑体的力学求解模型，结合力学平衡条件推导出抗滑桩的有效桩侧压力。采用瑞典法求得滑面应力计算公式，结合边坡安全稳定系数指标，提出了非线性强度准则下抗滑桩边坡加固的稳定性解决方案。工程案例验证结果表明，岩土体非线性时，需增加桩长，方能确定边坡的稳定性要求；布置于临近坡脚点位置有助于提高边坡稳定性，但需防止位于抗滑桩上方的边坡出现局部滑动体破坏情况。
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| 关 键 词： | 抗滑桩 边坡稳定性 极限平衡 非线性强度准则 安全系数 |
Study on limit analysis of slope stability strengthened by anti slide pile under nonlinear strength criterion |
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| Ma Xiaoning,Xun Hang,Sun Guozhu,Li Weiliang. Study on limit analysis of slope stability strengthened by anti slide pile under nonlinear strength criterion[J].Zhongzhou Coal,2022,0(5):19-24. |
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| Authors: | Ma Xiaoning Xun Hang Sun Guozhu Li Weiliang |
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| Affiliation: | 1.Zhangjiakou Jingbei Geotechnical Engineering Co.，Ltd.，Zhangjiakou075000，China；2.Zhangjiakou Architectural Design Institute Co.，Ltd.，Zhangjiakou075000，China |
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| Abstract: | In view of the fact that the existing limit equilibrium methods cannot well reflect the principle of anti-slide pile strengthening slope under the non-linear strength criterion，
a simple mechanical solution model of anti-slide pile and slope sliding mass was proposed by using earth pressure theory.Combined with mechanical balance，the conditions deduce the effective pile side pressure of the anti-slide pile.Then，using the Swedish method to obtain the calculation formula of the sliding surface stress，this paper combined with the slope safety stability coefficient index to propose a stability solution for the anti-slide pile slope reinforcement under the non-linear strength criterion.The verification results of the engineering case showed that，when the rock and soil are nonlinear，the length of the pile needs to be increased to determine the stability requirements of the slope；the placement near the toe point of the slope helps to improve the stability of the slope.However，it is necessary to prevent local sliding body damage on the slope above the anti-slide pile. |
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| Keywords: | ,anti-slide pile, slope stability, limit equilibrium, nonlinear strength criterion, safety factor |
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