摘要
以平面比奥固结理论为基础,考虑土的粘滞性,采用粘弹塑性本构模型,系统地介绍利用有限元处理堆载预压加固软基路堤的数值方法。通过对工程实例的数值计算,分析固结和流变对地基变形的影响,并对工后进行了预测。结果表明,在软基路堤变形计算中考虑土体流变是必要和重要的,它可对加固效果进行更为准确和全面的评价。
Based on plane Biot consolidation theory,considering the viscosity of soil, using the visco-elsatie-plasticity constitutive model, the numerical calculation of surcharge preloading in the reinforcement of soft foundation. Through a practical example, the effects on foundation deformation caused by its consolidation and viscosity are analyzed and settlemen in the future is predicted. It is shown 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 cexactly and comprehensively.
出处
《交通科技》
2009年第B07期58-61,共4页
Transportation Science & Technology
关键词
软基
堆载预压
粘弹塑性
本构模型
有限元
soft foundation
surcharge preloading
visco-elastic-plasticity
constitutive model
finite elements
