Rational interpretation of tunneling in urban area based on model test and numerical simulation

为了研究隧道开挖对既有结构的影响，进行了考虑既有建筑物的深部地下隧道开挖模型试验，通过模型试验和数值模拟发现，隧道开挖对建筑物既有基础的影响很大，即使隧道在地下深部施工也是如此。因此，在深埋地下隧道施工时，应考虑土-结构相互作用的影响。数值分析较好地反映了模型试验的地表沉降量、地表变形和土压力分布。

To investigate the effect of tunneling on existing structure, model tests of tunneling are performed in deep underground considering existing building.From the model tests and numerical simulations it is found that for there is a significant effect of tunneling on the existing foundation of building even the tunnel is constructed in deep underground. Therefore, the effect of the soil-structure interaction should be taken into account during tunnel construction in deep underground. The numerical analyses perfectly capture the surface settlement, ground deformation and distributions of earth pressure of the model tests