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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.

Study on seismic ground motion of P-wave incident elastic foundation free field under thermal effect

Yang Yiqi, Ma Qiang

Journal of Theoretical and Applied Mechanics

2023

Vol. 61 nr 4

673--685

This study extends the traditional problem of a seismic response of elastic foundations under isothermal conditions when considering thermal effects. Firstly, a free-field model of the elastic foundation is established under the incidence of plane P-waves. Then, utilizing the principles of wave propagation in a homogeneous and isotropic thermoelasticmedium and the principle of Helmholtz vector decomposition, the influence of thermal physical parameters such as thermal conductivity, medium temperature on seismic ground motion of the free-field on elastic foundation is investigated, which provides a reasonable explanation for the ground motion of a site under thermal effects.