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Diffraction of plane P-wave by an underwater tunnel

Ha Jia, Li Guochao, Yu Mingjian, Niu Chong, Fu Wanwan

Journal of Theoretical and Applied Mechanics

2025

Vol. 63 nr 2

649--361

In this investigation, the traditional seismic response problem of tunnels in single-phase and saturated soil under the incidence of plane waves is extended to the ground motion problem considering the overlying water. Firstly, the site model of underwater tunnel under plane P-wave incidence is established. Then, the influence of thermal physical parameters such as incident angle, incident frequency and porosity on the ground motion of an underwater tunnel is studied using the Fourier–Bessel series expansion method of the wave function, which provides a reasonable explanation for the ground motion of an underwater site.