连续排水边界下成层地基一维固结问题的有限元分析  

Finite element analysis of one-dimensional consolidation problem with continuous drainage boundaries in layered ground

作　　者：蔡烽[1,2] 何利军[3] 周小鹏[1] 梅国雄[1,3] 

机构地区：[1]南京工业大学交通学院,江苏南京210009 [2]温州市建筑设计研究院,浙江温州325003 [3]南昌航空大学土木建筑学院,江西南昌330063

出　　处：《中南大学学报（自然科学版）》2013年第1期315-323,共9页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(50608038)

摘　　要：基于ABAQUS有限元软件开发连续排水边界条件的子程序,将计算结果分别与单层地基经典的Terzaghi一维固结理论解和连续排水边界Terzaghi一维固结解析解以及双层地基一维固结解析解进行对比分析,验证计算结果的正确性。针对实际工程中常见的成层地基,采用变化弹性模量、渗透系数和泊松比的方法对连续排水边界下成层地基一维固结问题进行数值分析。研究结果表明:连续排水边界能良好地模拟接近实际的工程工况。Based on the finite element analysis of software ABAQUS, the one-dimensional subroutine of continuous drainage boundaries was developed. Results comparison among the classic Terzaghi＇s one-dimensional consolidation theory, the analytical solutions of Terzaghi＇s one-dimensional consolidation equation with continuous drainage boundaries and the analytical solutions of one-dimensional consolidation for a double-layered ground to verify the correctness. According to the layered ground of practical engineering, one-dimensional consolidation problem with continuous drainage boundaries in layered ground was investigated by using changes in different elastic moduli, permeability coefficients and poisson＇s ratios with the finite element analysis. The results show that continuous drainage boundaries can simulate the practical engineering commendably.

关 键 词：太沙基一维固结方程 连续排水边界 有限元分析 成层地基 

分 类 号：TU471.4[建筑科学—结构工程]