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以成都地铁2号线东延线建设为背景,介绍了成都东部地区膨胀土的物理力学特性,研究了该地区膨胀土的膨胀力与初始含水率和干密度、膨胀土的粘聚力与初始含水率之间的关系。在此基础上,从膨胀土对路基、隧道、桩基等产生影响的角度分析了膨胀土对轨道交通工程建设的影响。
Taking the east extension of Chengdu Metro Line 2 as a background, the physical and mechanical properties of expansive soils in the eastern part of Chengdu are introduced. The expansive and expansive forces, initial moisture content and dry density of expansive soils, The relationship between moisture content. On this basis, the influence of expansive soil on the construction of rail transit project is analyzed from the perspectives of expansive soil on subgrade, tunnel and pile foundation.