ZHU Sai-nan, CHEN Yan-hua, WANG Ning, et al. Analytical solution of imperfect contact effect at the interface between undersea tunnel and seabed soil under plane P waves incidence[J]. 2023, 44(10): 3049-3058.
ZHU Sai-nan, CHEN Yan-hua, WANG Ning, et al. Analytical solution of imperfect contact effect at the interface between undersea tunnel and seabed soil under plane P waves incidence[J]. 2023, 44(10): 3049-3058.DOI: 10.16285/j.rsm.2023.0795.
Based on the ideal fluid wave theory and Biot’s theory
an undersea tunnel model with imperfect interface is established by considering the imperfect contact relationship between the undersea tunnel and the surrounding seabed soil in engineering reality. The model also considers the dynamic interaction of seawater-seabed soil-undersea tunnel. The analytical solution of the imperfect contact interface effect between the undersea tunnel and the surrounding seabed soil under P waves incidence is derived using the Hankel function integral transformation method and the wave function expansion method. Based on the analytical solution
the effects of imperfect contact conditions on the seismic dynamic response of the undersea tunnel are analyzed by numerical calculations. The calculation results show that the imperfect contact condition has a significant effect on the displacement response and stress response of the undersea tunnel; the displacement response and stress response of the undersea tunnel considering the imperfect contact condition at the tunnel-seabed soil interface are significantly higher than those at the interface with perfect conditions.