真空联合堆载预压法处理软土地基的有限元分析

摘要

The ABAQUS simulation is used for the Vacuum-surcharge project,and the vacuum load is directly exerted on the ground instead of being translated into the preload. According to the principle of equality of consolidation degree, plastic drainage board is equivalent to shingletrap by adjusting the permeability factor. The simulation results agree with the actual measurements, and the results can exactly reflect the vertical settlement, horizontal displacement, the change regulation of pore pressure and so on. The analysis results will be significant for the design of treatment for the soft soil foundation.%借助Abaqus对真空-堆载联合预压法进行模拟，在真空加载过程中不进行真空荷载的换算，直接模拟“真空度”。根据固结等效的原则，将塑料排水板等效换算为排水板墙，调整地基土的渗透系数。计算值与实测值较吻合，较好的反映地基沉降，水平位移，孔压变化的规律，分析结果为地基处理的设计提供了有意义的参考。