Taken the amplitude modulated Tangshan Seismic wave as the simulated input, nonlinear dynamic analysis program LS-DYNA is chosen to carry out the earthquake-resistant analysis of the immersed tunnel to provide sufficient evidences for the anti-seismic design of the immersed tunnel. 地震波载荷选用调幅后的唐山地震波,应用通用非线性动力分析有限元程序LS-DYNA进行求解,计算结果可为隧道的抗震设计提供有力依据。