摘要
本文依饱和孔隙介质动力学的基本方程组,对Rayleigh波在二相介质中的传播及一维土层动力学问题进行了探讨。数值计算表明:Rayleigh波速度在饱和孔隙弹性介质中大大小于在非饱和弹性介质中传播的速度;一维土层地面位移对有惯性力作用(a≠0)与忽略惯性力作用(a=0)也有很大差异。并对一维土层在阶梯形加载、脉冲式加载、正弦加载状态进行求解,为在实践中定性估计地基由于这类荷载作用产生的运动性态提供参考。
According to the basic equations of dynamics for a fluid-saturated porous media, the propagation of the Rayleigh wave and its one-dimension soil dynamic are studied. The three states for soil are investigated in this paper: (1) supposing the volume change and the distortion of the solid phase skeleton to comply with Hooke's Law; (2) the volume change of soil skeleton is elastic and the distortion appears to be Voigt--Kelvin's Visco-elastic; (3)the volume change of soil skeleton is elastic and the distortion appears to be Maxwell's visco-elastic.
出处
《地壳形变与地震》
CSCD
1993年第3期71-78,共8页
Crustal Deformation and Earthquake
基金
地震科学联合基金
关键词
饱和孔隙
弹性介质
瑞利波
动力学
Fluid-saturated porous media
Rayleigh wave
solid skeleton
pulse loading
