Soil deposits inevitably affect the seismic performance of underground structures, and underground tunnels are commonly constructed on sites composed of layered soil deposits. In this study, dynamic centrifuge tests and numerical modelling are conducted to enhance the fundamental understanding of the kinematic soil-tunnel interaction for tunnels constructed in layered soils that consist of muddy clay and silty clay. The site seismic response and tunnel seismic performance between the centrifuge and numerical modelling are compared. The acceleration time histories, amplification factors of the input motions, and the Fourier spectra between free field and structural field are experimentally and numerically investigated. For comparative purposes, parametric studies of tunnels in a single muddy clay and a single silty clay using verified numerical modelling are carried out. In addition, the dynamic bending moment and axial forces obtained by centrifuge and numerical modelling are compared with the solutions predicted by analytical methods in prior studies.

土壤沉积物不可避免地会影响地下结构的抗震性能，地下隧道通常建在由分层土壤沉积物组成的场地上。在这项研究中，进行了动态离心试验和数值模拟，以增强对在由泥质粘土和粉质粘土组成的层状土壤中建造的隧道的运动学-隧道相互作用的基本认识。比较了离心机和数值模型之间的现场地震响应和隧道地震性能。实验和数值研究了加速时间历史，输入运动的放大因子以及自由场与结构场之间的傅立叶谱。出于比较目的，使用验证的数值模型对单个泥质粘土和单个粉质粘土中的隧道进行了参数化研究。此外，将通过离心和数值模拟获得的动态弯矩和轴向力与先前研究中通过分析方法预测的解决方案进行了比较。