【摘要】 近年来,软土中地铁隧道在运营后的沉降现象日益严重。从隧道下卧层土体的不均匀沉降、邻近施工影响、地面荷载和水位变化、隧道与车站的不同步变形、渗漏以及地铁列车激扰等方面,分析了隧道产生纵向不均匀沉降的原因,得到了地铁列车激扰是产生不均匀沉降源头的结论。更多还原

【Abstract】 Nowadays, the declining of the operated subway tunnels in the soft soil is becoming serious. In this paper, different causations that bring the asymmetric sedimentation of the tunnel have been raised, including the uneven declining of the soil layer, construction influence, variety of the load and water, different transmogrification between the tunnel and the state, leakage and the train excitation. We obtain the conclusion which the train excitation is the basic reason for asymmetric sedimentation of subway tunnel.更多还原