胡熠, 康景文, 陈云. 2015: 一种隧道衬砌冻胀变形特征模型试验方法. 工程地质学报, 23(s1): 1-7. DOI: 10.13544/j.cnki.jeg.2015.s1.001
    引用本文: 胡熠, 康景文, 陈云. 2015: 一种隧道衬砌冻胀变形特征模型试验方法. 工程地质学报, 23(s1): 1-7. DOI: 10.13544/j.cnki.jeg.2015.s1.001
    HU Yi, KANG Jingwen, CHEN Yun. 2015: A MODEL TEST METHOD OF TUNNEL LINING DEFORMATION CHARACTERISTIC UNDER THE FROST HEAVING FORCE. JOURNAL OF ENGINEERING GEOLOGY, 23(s1): 1-7. DOI: 10.13544/j.cnki.jeg.2015.s1.001
    Citation: HU Yi, KANG Jingwen, CHEN Yun. 2015: A MODEL TEST METHOD OF TUNNEL LINING DEFORMATION CHARACTERISTIC UNDER THE FROST HEAVING FORCE. JOURNAL OF ENGINEERING GEOLOGY, 23(s1): 1-7. DOI: 10.13544/j.cnki.jeg.2015.s1.001

    一种隧道衬砌冻胀变形特征模型试验方法

    A MODEL TEST METHOD OF TUNNEL LINING DEFORMATION CHARACTERISTIC UNDER THE FROST HEAVING FORCE

    • 摘要: 为研究寒区隧道衬砌结构在冻胀作用下的变形特征, 设计了一种室内模型试验, 根据在建的巴郎山隧道洞口段围岩及衬砌结构特征制作出隧道模型, 利用制冷设备在模型隧道洞腔内制造出与现场相同的低温环境使模型中的地下水降温冻结, 分析衬砌结构在冻胀力作用下的变形特征。试验结果表明, 隧道模型在低温环境作用5d后即达到满足地下水冻结的温度条件, 衬砌在冻胀作用下产生变形, 其中边墙和拱顶处衬砌产生的应变较大, 最大应变为122, 仰拱和墙脚处衬砌应变较小, 最小应变为25。

       

      Abstract: To study the lining deformation characteristic of tunnel in cold region under the frost heaving force, a model test was designed, the model was made based on the surrounding rock and tunnel lining characteristic of the Balangshan Mountain, the low temperature environment in the tunnel of model was made by refrigeration equipment, the groundwater inside the model was frozen, the lining structure deformation characteristic under the frost heaving force was analyzed. The results show that the freezing temperature condition of model was satisfied after 5 day in the low temperature environment, the lining was distorted under the frost heaving force, the lining strain of the tunnel crown and side wall was greatly, the maximum strain is 122, and the lining strains of inverted arch and foot of wall was less, the minimum strain is 25.

       

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