盾构施工对地表振动的响应研究  

A Study on Surface Vibration Response to Shield Tunneling Construction

作　　者：薛茜 XUE Qian(College of Urban,Rural Planning and Constuction Engineering,Shangluo University,Shangluo 726000,Shaanxi)

机构地区：[1]商洛学院城乡规划与建筑工程学院,陕西商洛726000

出　　处：《商洛学院学报》2025年第2期73-79,共7页Journal of Shangluo University

基　　金：商洛学院科研基金项目(23HKY277)。

摘　　要：以某盾构隧道施工为工程依托,通过现场监测盾构内部和对应位置地表的振动,研究了盾构施工对地表振动的响应。结果表明,盾构掘进过程中振动加速度峰值表现为Z向>Y向>X向的规律,表明盾构掘进施工过程中竖向动力响应最为显著。振动源处的振动波主要受几何阻尼和材料阻尼两大因素的影响,振动能量在地下土壤中迅速衰减,从盾构隧道内部监测点到地面监测点经过30 m的垂直地层传播后,Z方向的加速度峰值由原来的0.0002902 m/s^(2)减少到0.000009204 m/s^(2)。可见,盾构机前进方向正上方地表监测点的动力响应远小于盾构机监测点的动力响应。Based on the construction of a shield tunnel,the response of shield construction to surface vibration is studied by monitoring the vibration inside the shield and the corresponding position on site.The results show that the peak value of vibration acceleration in the process of shield tunneling is Z>Y>X,indicating that the vertical dynamic response is the most significant in the process of shield tunneling.The vibration wave at the vibration source is mainly affected by geometric damping and material damping,and the vibration energy decreases rapidly in the underground soil.After 30 m vertical formation propagation from the monitoring point inside the shield tunnel to the ground monitoring point,the peak acceleration in the Z direction is reduced from 0.0002902 m/s^(2) to 0.000009204 m/s^(2).It can be seen that the dynamic response of the surface monitoring point directly above the advance direction of the shield is much smaller than that of the shield monitoring point.

关 键 词：盾构施工 振动响应 傅里叶变换 时域分析 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]