Scattering of SH waves by lined tunnel in inhomogeneous right-angle space with variable shear modulus (Q6113494)

The seismic response of a tunnel structure in an inhomogeneous elastic right-angle space with varying stiffness is solved based on the theory of complex functions. The variation in stiffness is reflected by using an inhomogeneous form of the shear modulus. The governing equations are derived using displacement auxiliary functions and mapping functions. Additionally, the calculation model is established using the image method, and a series solution of the wave field is constructed. This solution primarily analyzes the distribution of displacement amplitude on the surface and the dynamic stress concentration factor on the lining.