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兰永一级公路顺层滑坡抗剪强度参数确定及应用

马金莲, 朱彦鹏, 杨晓宇, 周欣海

马金莲, 朱彦鹏, 杨晓宇, 周欣海. 兰永一级公路顺层滑坡抗剪强度参数确定及应用[J]. 岩土工程学报, 2018, 40(S1): 118-123. DOI: 10.11779/CJGE2018S1019
引用本文: 马金莲, 朱彦鹏, 杨晓宇, 周欣海. 兰永一级公路顺层滑坡抗剪强度参数确定及应用[J]. 岩土工程学报, 2018, 40(S1): 118-123. DOI: 10.11779/CJGE2018S1019
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MA Jin-lian, ZHU Yan-peng, YANG Xiao-yu, ZHOU Xin-hai. Determination and application of shear strength parameters of bedding landslide of Lanzou-Yongjing Highway[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(S1): 118-123. DOI: 10.11779/CJGE2018S1019
Citation: MA Jin-lian, ZHU Yan-peng, YANG Xiao-yu, ZHOU Xin-hai. Determination and application of shear strength parameters of bedding landslide of Lanzou-Yongjing Highway[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(S1): 118-123. DOI: 10.11779/CJGE2018S1019
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兰永一级公路顺层滑坡抗剪强度参数确定及应用  English Version

  • 1. 中国地震局黄土地震工程实验室,甘肃 兰州730000;
    2. 中国地震局兰州地震研究所,甘肃 兰州 730000;
    3. 兰州理工大学土木工程学院,甘肃 兰州 730050

基金项目: 中国地震局地震预测研究所基本科研业务费项目（2017IESLZ04）
详细信息
    作者简介:

    马金莲(1988- ),女,硕士,研究实习员,主要从事黄土动力学与地震工程理论研究与试验工作。E-mail：majinlian152@163.com。

  • 中图分类号: TU43

Determination and application of shear strength parameters of bedding landslide of Lanzou-Yongjing Highway

  • 1. Key Laboratory of Loess Earthquake Engineering, Lanzhou 730000, China;
    2. Lanzhou Institute of Seismology, Lanzhou 730000, China;
    3. School of Civil Engineering of Lanzhou University of Technology, Lanzhou 730050, China

摘要

    摘要
  • 摘要: 兰永一级公路工程修建过程中在路堑边坡开挖时形成了顺层边坡,以K23+520处的大型顺层滑坡最为典型。由于岩土体抗剪强度参数在边坡稳定性分析和加固设计中不可或缺,为了更好地实现其余类似边坡的加固设计和稳定性分析,以K23+520处的滑坡为研究对象,提出含有软弱夹层的顺层滑坡结构面上抗剪强度参数的确定方法：对已知一个滑动面位置的滑移-拉裂破坏模式下的顺层滑坡,通过结合顺层滑坡失稳条件（临界高度、局部稳定系数）及变形破坏特征对满足刚体滑移模型下的多组强度参数进行逐步修正,得到了满足工程应用要求的强度参数取值,并将结果用于类似边坡的加固设计和稳定分析。方法不仅适合兰永一级公路K23+520处顺层滑坡结构面上抗剪强度参数的确定,还适用于类似滑坡工程强度参数的确定,具有一定的工程实用价值。
    Abstract: Bedding slope is formed in the excavation of cutting slope during construction of Lanzhou-Yongjing Highway, with K23+520 large bedding landslide being the most typical. Due to the importance of shear strength parameters of rock and soil in the slope stability and support design, in order to better realize the reinforcement design and stability analysis of similar slopes, taking K23+520 section of landslide as the research object, a method is put forward to determine the shear strength parameters of slip surface of bedding landslide with weak interlayer: for the landslide with a given location of slip surface, the failure conditions of the bedding landslide (critical height, local stability coefficient) and the deformation characteristic are combined to revise muttiple groups of strength shear parameters to meet the rigid sliding model step by step, the strength parameters satisfying the requirements of engineering application are obtained, and the results are used for the reinforcement design and stability analysis of similar slopes. This method is suitable for determining the strength parameters of the structural plane of K23+520 bedding landslide of Lanzhou-Yongjing Highway and other similar landslides, and it has a certain practical value in engineering.
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    • 参考文献(14)
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出版历程
  • 收稿日期:  2018-02-23
  • 发布日期:  2018-08-24

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