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范文, 彭建兵, 邓龙胜, 黄强兵, 熊炜, 马杰. 分段式地铁隧道穿越地裂缝带的模型试验研究[J]. 岩土工程学报, 2010, 32(1).
引用本文: 范文, 彭建兵, 邓龙胜, 黄强兵, 熊炜, 马杰. 分段式地铁隧道穿越地裂缝带的模型试验研究[J]. 岩土工程学报, 2010, 32(1).
Study on the model experiment of sectional subway tunnel crossing the ground fissure belt[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(1).
Citation: Study on the model experiment of sectional subway tunnel crossing the ground fissure belt[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(1).

分段式地铁隧道穿越地裂缝带的模型试验研究

Study on the model experiment of sectional subway tunnel crossing the ground fissure belt

  • 摘要: 以西安某段地裂缝为原型,通过几何比1∶25的模型试验,研究了地裂缝活动对分段式衬砌结构受力变形的影响效应。由试验结果得出以下结论:由于分段式衬砌每一段均可以满足一定量的独立变形,且对附近的衬砌段影响较小,所以较能适应地裂缝环境。衬砌的破坏模式主要为侧壁受环向挤压破坏,多发生在上盘尤其是靠近裂缝的结构段;土体内次生裂缝不发育,仅出现在上盘顶部距裂缝100cm附近,土体受张拉剪切作用,形成张剪裂缝。

     

    Abstract: According to the one section of ground fissure in Xi’an as the prototype, the ground fissure activity effect is studied which distorts to section lining, with the geometry radio 1∶25 model experiment. The following conclusion is drawn by the test result: because each section of lining may satisfy the ration independent distortion and have a small effect on nearby lining, it can adapt to the fissure circumstances. The main lining destruction pattern is sidewall subjected to the hoop extrusion, which often occurs on hanging lager, especially near to the fissure. In the soil body the secondary fissure centratively appears on crown of hanging wall where is 100cm nearby fissure, so the soil body receives the tension and shear function forming the fissure.

     

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