Response Analysis of Curved Tunnel under Near-Field Long-Period Ground Motion Considering Seismic Wave Propagation Effect

In this paper, long-period ground motion is used as the dynamic input to study performance evolution of curved tunnel lining structure under seismic wave propagation excitation. This paper presents numerical studies on waves, considering effect, and aims illustrate response principle structural failure mechanism structures motion. Firstly, based analysis method, balance equation a effect was analyzed. Secondly, applied 3D finite element software, corresponding model boundary conditions were established, parameterized carried out. Finally, according simulation results, discussed. The research results show that depth segment thickness significantly affect tunnel. complex, which shows relative displacements left right symmetrical positions are different. displacement inside curve less than outside curve. Compared with other types motion, near-site can lead large deformation tunnel, damages greatly, enhancement prominent for long shield