Based on Biot’s wave theory

dynamic response of a circular lining tunnel in a saturated poroelastic soil due to a moving ring load is investigated. The liner is modeled as an elastic body and the soil is modeled as saturated porous medium. In order to uncoupling governing equations

two scalar potentials are introduced to represent the displacement for the solid skeleton

the pore fluid and the linner. According to boundary condition and continuity condition

the analytical solutions of dynamic response

such as stress

displacement and water pressure

are derived in frequency and wave-number domain by using Fourier transformation. Numerical results are obtained by inverse Fourier transformation. To compare the results

dynamic response of three tunnel models (tunnel in elasticity

tunnel in saturated soil and lining tunnel in saturated soil) is calculated. The results of numerical example show: (1) the velocity of the moving load greatly influences dynamic response of three tunnel models; (2) large difference between the tunnel in elasticity and tunnel in saturated soil

so the soil near the tunnel should be modeled as saturated porous medium in abundant water field; (3)the influence of the liner on the dynamic response of the tunnel is remarkable; so the liner effect must be considered in the dynamic analysis of the tunnel.