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利用弱非弹性介质模型 ,推导了波浪作用下有限深海床内部孔隙水压力、应力以及土骨架和孔隙水位移关系 .针对 3种海洋土 ,分析了土床内孔隙水压力、应力、应力角、位移的分布以及弹性波随加载波周期的变化 .结合前人的实验结果 ,讨论了在粉土质海床中所呈现的共振现象 .从理论上探讨了该现象发生的力学机制 ,提出了土床中硬土层的存在是决定土床中是否可能发生共振的必要条件 ,并且可以预测共振发生的可能区域 .
The relationship between pore water pressure and stress, as well as the displacement of soil skeleton and pore water in the limited deep sea bed under the action of waves is deduced by means of the weakly nonelastic medium model.For the three kinds of marine soils, pore water pressure, stress, stress angle, The distribution of the displacement and the change of the elastic wave with the period of the added carrier.The resonance phenomenon presented in the silt seabed is discussed based on the experimental results of the former.The mechanical mechanism of the phenomenon is discussed theoretically and the soil bed The presence of a medium hard layer is a necessary condition for determining whether resonance is likely to occur in the soil bed and can predict the possible area of resonance.