长江科学院院报2018，Vol.35Issue(5)：68-72,5.DOI:10.11988/ckyyb.20161205
ABAQUS渗流应力耦合分析中渗透荷载施加问题探讨
Problems of Applying Seepage Pressure in Coupling Analysis of Seepage and Stress Using ABAQUS
摘要
Abstract
Coupling analysis of seepage and stress has attracted considerable attention in numerical simulation. The influence of seepage on stress is reflected in the seepage load. Nevertheless,there are two decided differences listed below when scholars deal with the water pressure and boundary conditions with ABAQUS software: whether it is necessary to apply hydrostatic pressure when pore pressure boundary is defined;and whether it is essential to define uplift pressure on dam foundation if the seepage field of foundation rock is considered. In view of this,we analyzed the two problems based on vertical stress balance and pore hydrostatic pressure balance theories as well as numeri-cal examples,and conclude that both hydrostatic pressure and pore pressure boundary should be considered when submitting coupled process of seepage and stress with ABAQUS software. Moreover, uplift pressure should be ap-plied when the permeability of dam body is not considered; but when the permeability of dam body is taken into consideration,uplift pressure is not required anymore. The results offer reference for the application of ABAQUS software to seepage-stress coupling analysis of concrete gravity dam.关键词
渗流应力耦合模型/ABAQUS/坝体渗透性/水荷载边界条件/坝基扬压力Key words
coupled model of seepage and stress/ABAQUS/permeability of dam/water pressure boundary condi-tion/uplift pressure of dam foundation分类
建筑与水利引用本文复制引用
吕从聪,李宗利,李东奇..ABAQUS渗流应力耦合分析中渗透荷载施加问题探讨[J].长江科学院院报,2018,35(5):68-72,5.基金项目
国家自然科学基金面上项目(51379178) （51379178）
中央高校基本科研业务费专项(ZD2012015) （ZD2012015）
