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抗滑桩岩拱效应与合理桩间距分析

张骞, 李术才, 张乾青, 李利平, 徐飞, 杨尚阳

张骞, 李术才, 张乾青, 李利平, 徐飞, 杨尚阳. 抗滑桩岩拱效应与合理桩间距分析[J]. 岩土工程学报, 2014, 36(zk2): 180-185. DOI: 10.11779/CJGE2014S2030
引用本文: 张骞, 李术才, 张乾青, 李利平, 徐飞, 杨尚阳. 抗滑桩岩拱效应与合理桩间距分析[J]. 岩土工程学报, 2014, 36(zk2): 180-185. DOI: 10.11779/CJGE2014S2030
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ZHANG Qian, LI Shu-cai, ZHANG Qian-qing, LI Li-ping, XU Fei, YANG Shang-yang. Analysis on rock-arch effect of anti-slide piles and rational pile spacing in engineering project[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk2): 180-185. DOI: 10.11779/CJGE2014S2030
Citation: ZHANG Qian, LI Shu-cai, ZHANG Qian-qing, LI Li-ping, XU Fei, YANG Shang-yang. Analysis on rock-arch effect of anti-slide piles and rational pile spacing in engineering project[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk2): 180-185. DOI: 10.11779/CJGE2014S2030
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抗滑桩岩拱效应与合理桩间距分析  English Version

  • 1. 山东大学岩土与结构工程研究中心,山东 济南 250061;
    2. 同济大学岩土及地下工程教育部重点实验室,上海 200092;
    3. 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏 徐州 221116

基金项目: 同济大学岩土及地下工程教育部重点实验室开放基金项目（KLE-TJGE-B1301）; 中国矿业大学深部岩土力学与地下工程国家重点实验室开放基金项目（SKLGDUEK1210）; 中国博士后科学基金面上项目（2012M521339）; 山东大学自主创新基金项目（2012GN012）
详细信息
    作者简介:

    张 骞(1986- ),男,博士研究生,讲师,主要从事边坡工程与隧道工程方面的研究工作。E-mail: bowanghou1@sina.com。

Analysis on rock-arch effect of anti-slide piles and rational pile spacing in engineering project

  • 1. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China;
    2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China;
    3. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining &
    Technology, Xuzhou 221116, China

摘要

    摘要
  • 摘要: 在理清不同桩间岩体破坏形式的基础上,对边坡工程中抗滑桩岩拱效应和合理桩间距的确定方法进行了分析,阐明了软质岩体拱效应的形成及演化机理,基于拱轴内力、破坏方式及位置对比分析了岩拱与土拱特性的差异性。在此基础上,建立了悬链线拱轴方程,利用两铰拱原理对岩拱进行了内力计算分析。利用岩体跨中极限平衡条件,建立了拱轴系数m关于桩间距l及拱高f的表达式。同时,利用MATLAB软件对抗滑桩桩合理桩间距进行了探讨。从工程实际中岩拱效应充分发挥及安全经济角度考虑,给出了合理桩间距的选择方案。
    Abstract: Based on the clarification of the failure forms of different rock masses between piles, analyses on rock-arch effect of anti-slide piles and determination method of rational pile spacing in slope engineering project were conducted in the present method. In this paper, the formation and evolution of arching effect of soft rock were illuminated, and the comparative analysis for characteristics of rock and soil arches was carried out based on the internal force, failure mode and position in arch axis. Using the above-mentioned analyses, the catenary arch-axis equation was proposed, and the two-hinged arch theory was adopted to calculate the internal forces of rock arch. Moreover, the expression of arch-axis coefficient m concerning pile spacing l and arch height f was established using the ultimate equilibrium condition in mid-span rock mass. Moreover, the MATLAB software was adopted to assess the rational pile spacing. For practical purposes, the rational pile spacing was given to fully develop the rock-arch effect and meet the requirements of economy. The data of engineering example was used to verify the rationality of the present calculation method. The present method can be referenced for similar engineering designs.
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    • 参考文献(12)
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出版历程
  • 收稿日期:  2014-07-27
  • 发布日期:  2014-07-27

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