In recent years, to effectively mitigate the issue of urban traffic congestion, tunnels have become widely used new type of road. However, when the soil layer is excavated and disturbed, the resulting vibration affects the safety of the buildings above it, especially for ancient buildings that are very sensitive to vibrations. Taking the White Tower in Hangzhou as an example, in this paper, the vibration response propagation of large-diameter shield tunnel excavation to adjacent ancient towers is studied through field measurements. The vibration response of the unexcavated south line tunnel is predicted by using 3D numerical analysis software, and the optimal construction parameters are obtained. The study found that the frequency domain component of the White Tower bedrock vibration caused by shield tunneling is mainly 5–20 Hz, and the vibration response attenuates significantly beyond 40 m. Further, reducing the propulsive force can reduce the vibration response of the White Tower; therefore, controlling the propulsion and reducing the tunneling velocity can reduce the vibration response.

中文翻译：

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盾构施工对古塔振动的影响及控制

近年来，为有效缓解城市交通拥堵问题，隧道已成为广泛应用的新型道路。然而，当土层被开挖并扰动时，产生的振动会影响其上方建筑物的安全，尤其是对振动非常敏感的古建筑。本文以杭州白塔为例，通过现场实测研究了大直径盾构隧道开挖对邻近古塔的振动响应传播。利用3D数值分析软件对未开挖南线隧道的振动响应进行预测，得出最佳施工参数。研究发现，盾构施工引起的白塔基岩振动频域分量主要为5~20 Hz，且在40 m以上振动响应明显衰减。进一步地，减小推进力可以减小白塔的振动响应；因此，控制推进力、降低掘进速度可以降低振动响应。