Urban vibrations are increasing due to urban developments all over the world. These vibrations are daily applied to all surrounding structures, while their effects are not mainly considered in regular geotechnical analyses. This research will focus on how much urban vibrations cause displacement and strain in soil in a tunnel surrounding. In fact, using a case study data and combination of numerical analyses, empirical equations, and geodetic monitoring, the displacements and strains of soil caused by urban vibrations were calculated, compared, and evaluated. A traffic tunnel in Tehran (Arash-Esfandiar tunnel) was studied, in which a section was monitored by geodetic tools (simple instruments that are glued to the tunnel roof and their displacements measured using a theodolite). To complete the required data, microtremor recording equipment was employed to record real urban vibrations in the site. Then, using numerical modeling, the strains and displacements were obtained by applying the recorded vibrations to the model. The obtained strain values were employed to calculate the constant parameters of two existing empirical equations of Li and Selig and Chai and Miura. The obtained parameters conformed to the results of the previous studies and were all in the ranges given in those studies. Thus, the obtained parameters are proposed for the soil of Tehran for the first time. These parameters could be used for future studies on the effect of urban vibrations on Tehran soil. Furthermore, the calculated displacements were compared with the results of geodetic monitoring, which were in good agreement. The amounts of measured strains and calculated displacements show the importance of studies on the effects of urban vibrations.

由于世界各地的城市发展，城市振动正在增加。这些振动每天都会施加到所有周围的结构上，而在常规的岩土分析中并未主要考虑它们的影响。这项研究将集中于城市振动在隧道周围的土壤中引起位移和应变的程度。实际上，利用案例研究数据以及数值分析，经验方程和大地测量的组合，可以计算，比较和评估城市振动引起的土壤位移和应变。研究了德黑兰的一个交通隧道（阿拉什-埃斯凡迪亚尔隧道），其中的一段通过大地测量工具（粘贴在隧道顶上的简单仪器并使用经纬仪测量了位移）进行了监控。要完成所需的数据，使用微震记录设备记录现场的实际城市振动。然后，使用数值建模，通过将记录的振动应用于模型来获得应变和位移。使用获得的应变值来计算两个现有的Li和Selig以及Chai和Miura的经验方程的常数参数。所获得的参数与先前研究的结果相符，并且均在那些研究中给出的范围内。因此，首次提出了针对德黑兰土壤的参数。这些参数可用于将来研究城市振动对德黑兰土壤的影响。此外，将计算出的位移与大地测量的结果进行了比较，结果吻合良好。