摘要
本文从达朗贝尔原理出发,根据有效应力原理推导出饱和土体的二维动力固结方程,将其与孔隙水压力的计算结合起来,并利用有限单元法,即可对土坝(或地基)进行考虑孔隙水压力产生、扩散与消散的非线性土、水耦合振动系统的有效应力动力反应分析。本分析方法的特点是以动力固结方程为基础,将土体的振动与固结结合到一起考虑,较好地反映了土体在振动过程中的实际性态,比目前以太沙基或比奥静力固结方程为基础的静-动交替分析法更为合理。此外,比奥静力固结方程可作为动力固结方程的特例而得到。
In this paper, the two-dimensional dynamic consolidation equations for saturated soil are established according to the D'Alembert's principle and the effective stress principle. In these equations the calculation of pore water pressure is introduced. The non-linear effective stress dynamic ana- ; lysis of coupling vibrating system considering of soil and pore water is made by finite element method considering the generation, diffusion and dissipation of pore water pressure in embankment or foundation. This method combining vibration with consolidation can reflect the real behaviour of soil mass under vibration and is more reasonable than usual static-dynamic alternate analysis method based on Terzaghi's or Biot's consolidation theory. Moreovere, static Biot's equation can be obtained as a special case of the dynamic consolidation equations.
出处
《水利学报》
EI
CSCD
北大核心
1989年第12期31-42,共12页
Journal of Hydraulic Engineering
