The effects of site resonant characteristics on the seismic response of lined tunnel under plane SV-waves are studied by adopting indirect boundary element method（IBEM）.Exploring the advantages of both the half-space Green’s functions for the excavated half-space domain and full-space Green’s functions for the enclosed domain

the model of lined tunnel buried in layered elastic half-space is decomposed into a closed circle region and a excavated layered elastic half-space region.The fictitious distributed loads are applied both on elements of the tunnel surface in layered half-space domain and of the enclosed boundary to calculate Green’s functions for the displacements and stresses

and then the amplitudes of the fictitious distributed loads are determined from the boundary conditions to obtain the coefficient of dynamic stress concentration on lining inner surface.The method is verified and the coefficient of dynamic stress concentration around a lined tunnel in layered elastic half-space is investigated with the model of single and three soil layers over bedrock.Result shows that the coefficient amplitudes increase with the increasing of bedrock-to-soil layer stiffness ratio

while decrease with the thickening of layer on the whole

and they have very different amplitude for different layer sequences.