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Mechanical Simulation of Freezing Method Applied to the Construction of Connected Aisle in a Cross-River Tunnel
Pages: 57-61
Year: Issue:  7
Journal: Journal of Yangtze River Scientific Research Institute

Abstract: 为直观了解冻土帷幕的力学特性,掌握隧道联络通道开挖过程对冻土帷幕的影响,保证开挖过程的安全,采用大型有限差分软件FLAC3D,对联络通道的开挖过程进行了数值模拟。从数值分析的角度对冻土帷幕的应力与变形进行了分析和安全评价,详细研究了冻土帷幕中应力与位移的分布情况,确定了冻土帷幕厚度设计安全值为2.5 m(可以满足施工要求),并指出了容易产生应力集中的位置为冻土帷幕与隧道接触部位。由于该部位在冻结过...
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