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隧道支护结构体系及其协同作用

张顶立 孙振宇 侯艳娟

张顶立, 孙振宇, 侯艳娟. 隧道支护结构体系及其协同作用[J]. 力学学报, 2019, 51(2): 577-593. doi: 10.6052/0459-1879-18-322
引用本文: 张顶立, 孙振宇, 侯艳娟. 隧道支护结构体系及其协同作用[J]. 力学学报, 2019, 51(2): 577-593. doi: 10.6052/0459-1879-18-322
Dingli Zhang, Zhenyu Sun, Yanjuan Hou. TUNNEL SUPPORT STRUCTURE SYSTEM AND ITS SYNERGISTIC EFFECT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(2): 577-593. doi: 10.6052/0459-1879-18-322
Citation: Dingli Zhang, Zhenyu Sun, Yanjuan Hou. TUNNEL SUPPORT STRUCTURE SYSTEM AND ITS SYNERGISTIC EFFECT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(2): 577-593. doi: 10.6052/0459-1879-18-322

隧道支护结构体系及其协同作用

doi: 10.6052/0459-1879-18-322
基金项目: 国家自然科学基金(51738002);国家重点研发计划(2017YFC0805401)
详细信息
    作者简介:

    2) 张顶立,教授,主要研究方向:隧道及地下工程方面的教学与研究工作. E-mail:zhang- dingli@263.net

  • 中图分类号: U45

TUNNEL SUPPORT STRUCTURE SYSTEM AND ITS SYNERGISTIC EFFECT

  • 摘要: 隧道支护结构体系是围岩稳定性控制的关键,也是隧道设计的基本任务,而对支护结构之间相互作用过程和机制的系统认识则是定量化设计的基础. 本文从隧道围岩结构性和支护作用的本质特征出发,提出隧道支护具有"调动"和"协助"围岩承载的基本作用,明确了二者的功能分配原则和实现方式,即分别通过超前支护的保障作用、初期支护的核心作用和二次衬砌的安全储备作用共同完成;针对围岩的正面挤出、前倾式冒落和后倾式冒落等三种超前破坏模式,分别给出了相应的超前支护方式和支护效果评价方法;提出初期支护作为隧道围岩附加载荷的主要承担者,包括锚固体系与拱架及喷射混凝土结构,分别通过"调动"和"协助"围岩实现其承载功能,且同时具有"支"与"护"的作用;阐明了二次衬砌结构作为安全储备功能的内涵,建立了二次衬砌结构的载荷分担比率与刚度匹配性、支护时机的关系,并据此给出了二次衬砌结构参数和施作时机的建议值;建立了以围岩变形量$S$最小和协同度$\xi$最优为目标,基于超前支护、初期支护和二次衬砌与围岩相互作用三阶段的协同支护优化模型,明确了支护结构体系与围岩、不同支护结构之间以及支护结构要素之间三个层次的协同关系,并提出了隧道支护结构体系协同优化设计方法.

     

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出版历程
  • 收稿日期:  2018-10-05
  • 刊出日期:  2019-03-18

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