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土层锚杆拉拔界面松动破坏分析

段建, 言志信, 郭锐剑, 刘子振, 任志华

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段建, 言志信, 郭锐剑, 刘子振, 任志华. 土层锚杆拉拔界面松动破坏分析[J]. 岩土工程学报, 2012, 34(5): 936-941.
引用本文: 段建, 言志信, 郭锐剑, 刘子振, 任志华. 土层锚杆拉拔界面松动破坏分析[J]. 岩土工程学报, 2012, 34(5): 936-941.
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DUAN Jian, YAN Zhi-xin, GUO Rui-jian, LIU Zi-zhen, REN Zhi-hua. Failure analysis of soil anchors induced by loose interface under pullout load[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(5): 936-941.
Citation: DUAN Jian, YAN Zhi-xin, GUO Rui-jian, LIU Zi-zhen, REN Zhi-hua. Failure analysis of soil anchors induced by loose interface under pullout load[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(5): 936-941.
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土层锚杆拉拔界面松动破坏分析  English Version

  • 1.兰州大学土木工程与力学学院，甘肃 兰州 730000; 2. 西部灾害与环境力学教育部重点实验室，甘肃 兰州 730000; 3. 台州学院建筑工程学院，浙江 台州 318000

基金项目: 兰州大学中央高校基本科研业务费专项资金资助项目(lzujbky-2010-19)；高等学校博士学科点专项科研基金项目(20090211110016)；云南省交通运输厅 2010年科技教育专项资金项目（云交科 2010(A)06-b)
详细信息
    作者简介:

    段建 (1979 – ),男，湖南沅江人，讲师，博士研究生，主要从事岩土锚固及支挡工程教学与研究工作。

  • 中图分类号: TU472

Failure analysis of soil anchors induced by loose interface under pullout load

  • 1. Shool of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000 , China ; 2. Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, Lanzhou 730000 , China ; 3. School of Civil Engineering and Architecture, Taizhou University, Taizhou 318000 , China

摘要

    摘要
  • 摘要: 根据界面黏滑本构模型假定和剪切位移法基本原理，推导了土层锚杆拉拔临界松动荷载理论公式和锚杆拉拔荷载与松动长度内在关系表达式。界面黏滑特性致使锚杆剪应力重新分配，引起荷载进一步往里端传递，加剧里端锚固体损伤劣化。依据界面抗剪强度与残余强度之间大小关系将土层锚杆拉拔松动破坏类型划分为渐进式和突发式两种形式，并给出了破坏类型定量判别标准及其所对应的锚杆拉拔极限荷载理论解。最后，结合已有的锚杆拉拔试验资料，通过计算对比分析，验证了方法的可行性。
    Abstract: According to the presumption of the interface stick-slip constitutive model and the fundamental principles of the shear displacement method, a theoretical formula for the critical loose pullout load of soil anchors and an inherent relationship formula between anchor pullout load and loose length are derived. The redistribution of anchor shear stress is caused by stick-slip properties of the interface, and the loading is transmitted to the remote end of anchorage system, which aggravates the deterioration of interior anchor. Based on the size relationship between interface shear strength and residual strength, the failure types of soil anchors can be divided into progressive and bursting ones. The discriminant criterion and the theoretical solution to the ultimate load in accordance with the failure of anchor pullout are proposed. Finally, based on the data of anchor pullout tests, the feasibility of the proposed method is verified through calculation and comparative analysis.
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    • 参考文献(14)
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出版历程
  • 发布日期:  2012-05-19

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    REN Zhi-hua

    • 1. Shool of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000 , China ; 2. Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, Lanzhou 730000 , China ; 3. School of Civil Engineering and Architecture, Taizhou University, Taizhou 318000 , China

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