摘要
考虑土的粘滞性 ,采用粘弹塑性本构模型 ,较系统地介绍利用有限元处理真空联合堆载预压加固软基的数值方法。通过对一工程实例的数值计算 ,分析固结和流变的综合作用对地基变形的影响 ,并对工后沉降进行了预测。结果表明 ,在软基变形计算中考虑土体流变是必要的和重要的 ,它可对加固效果进行更为准确和全面的评价。
Considering the viscosity of soil, using the visco-elastic-plastic constitutive model, the numerical calculation of vacuum preloading combining with load in the reinforcement of soft foundation is systematically introduced. Through a practical example, the effects on foundation deformation caused by the interaction of its consolidation and viscosity are analyzed and settlement in the future is predicted. It is shown that it is necessary and important to consider the rheology of soil in the calculation of foundation deformation and it can be used to appraise the reinforcement effects more exactly and comprehensively.
出处
《水运工程》
北大核心
2002年第4期9-12,共4页
Port & Waterway Engineering
关键词
软土地基
真空联合堆载预压
有限元分析
粘弹塑性
本构模型
软基加固
vacuum preloading
visco-elastic-plasticity
constitutive model
finite elements
soft foundation reinforcement
