摘要
基于动力弹塑性模型的有效应力数值方法和模型试验 ,在幅值为 0 1g和 0 2g正弦波动荷载下 ,利用足立—岗循环弹塑性模型 ,进行了饱和砂土堤坝的固液两相介质耦合的动力反应数值计算 .计算结果与振动模型试验进行了比较 ,表明该动力反应的数值分析方法能够合理求得土体中孔隙水压力、有效应力、加速度变化过程以及堤坝的沉降变形 .
Based on the effective stress response analysis method using Adachhi-Oka's cyclic elastic-plastic constitutive law with nonlinear hardening, the numerical simulation of saturated sandy foundation and embankment is carried out by means of FEM. The dynamic response under sine wave load with 0.1g and 0.2g acceleration amplitude, including deformation, pore water pressure and acceleration are obtained. It is shown that the numerical calculation results are rational and can be used to predict the liquefaction of saturated sandy foundation.
出处
《水利学报》
EI
CSCD
北大核心
2002年第4期28-32,共5页
Journal of Hydraulic Engineering
关键词
饱和砂土
液化
动力反应
数值计算
模型试验
堤坝
saturated sandy foundation
liquefaction
cyclic elastic-plastic constitutive
dynamic response
numerical calculation
model test
