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破碎岩质边坡锚墩式主动防护网设计方法

吴兵 梁瑶 赵晓彦 唐晓波 吴晓春 罗天成

吴兵, 梁瑶, 赵晓彦, 唐晓波, 吴晓春, 罗天成. 2021: 破碎岩质边坡锚墩式主动防护网设计方法. 中国地质灾害与防治学报, 32(3): 101-108. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-13
引用本文: 吴兵, 梁瑶, 赵晓彦, 唐晓波, 吴晓春, 罗天成. 2021: 破碎岩质边坡锚墩式主动防护网设计方法. 中国地质灾害与防治学报, 32(3): 101-108. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-13
Bing WU, Yao LIANG, Xiaoyan ZHAO, Xiaobo TANG, Xiaochun WU, Tiancheng LUO. 2021: Design method of anchor pier type active protective net on fractured rock slopes. The Chinese Journal of Geological Hazard and Control, 32(3): 101-108. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-13
Citation: Bing WU, Yao LIANG, Xiaoyan ZHAO, Xiaobo TANG, Xiaochun WU, Tiancheng LUO. 2021: Design method of anchor pier type active protective net on fractured rock slopes. The Chinese Journal of Geological Hazard and Control, 32(3): 101-108. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-13

破碎岩质边坡锚墩式主动防护网设计方法

doi: 10.16031/j.cnki.issn.1003-8035.2021.03-13
基金项目: 国家自然科学基金项目(41672295);四川省交通运输科技立项支持项目(2015B1-1);中国铁路总公司科技研究开发计划系统性重大项目(P2018G047)
详细信息
    作者简介:

    吴兵:吴 兵(1986-),男,湖南岳阳人,博士研究生,工程师,主要从事公路工程、岩土工程的生产与科研工作。E-mail:245603702@qq.com

    通讯作者:

    赵晓彦(1977-),男,河南延津人,教授,博导,主要从事边坡稳定性及边坡加固方面的研究。E-mail:xyzhao2@swjtu.cn

  • 中图分类号: P694;U213.1+58

Design method of anchor pier type active protective net on fractured rock slopes

  • 摘要: 现有公路(铁路)工程中的高陡岩质边坡,特别是风化作用强烈地区的岩质边坡,浅表层岩体多呈碎裂状。采用传统SNS主动防护网加固后,仍经常产生局部失稳、掉块等现象,部分甚至引起整体失稳。因此,针对破碎岩质边坡的加固防护迫切需要进行结构及其设计方法改进。本文提出一种锚墩式主动防护网新型组合结构及其受力计算和设计方法,可有效防止碎裂岩质边坡坡面破坏,同时保证边坡整体稳定。工程应用表明,该组合防护结构具有良好的破碎岩质边坡加固效果,值得在工程建设中推广应用。
  • 图  1  汶川—马尔康高速汶川出口处碎裂岩质陡坡

    Figure  1.  Cataclastic rock steep slope at Wenchuan exit of Wenchuan—Barkam expressway

    图  2  锚墩式主动防护网平面结构图

    Figure  2.  Anchor-pier active protection net structure plan

    图  3  锚墩与主动网接触处示意图

    Figure  3.  Diagram of contact between anchor pier and active protection net

    图  4  单元格内危岩有可探明结构时边坡力学模型

    Figure  4.  Mechanical model of slope with exploitable dangerous rock in the grid

    图  5  锚索因浅表层失稳产生的轴力增量

    Figure  5.  Axial force increment of anchor rope due to shallow surface instability

    图  6  单元格内无明显危岩体时边坡力学模型

    Figure  6.  Slope mechanical model in the grid without significant dangerous rock mass

    图  7  硬质土整体剪切破坏模式

    Figure  7.  General shear failure mode for hard soils

    图  8  锚墩式主动防护网设计流程图

    Figure  8.  Designflow chart of anchor-pier active protection net

    图  9  实例边坡锚墩式主动防护网加固代表断面图

    Figure  9.  Example of typical cross-sectional view of reinforcement for anchor-pier active protection net

    图  10  锚墩式主动防护网施工成形照片

    Figure  10.  Construction of anchor-pier active protection net

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  • 收稿日期:  2020-07-04
  • 修回日期:  2020-12-12
  • 刊出日期:  2021-06-25

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