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结合上海某工程大面积吹填土地基处理工程,研究了真空动力固结加固含饱和软粘土夹层的吹填土路基问题。通过对加固过程中及加固后的地下水位变化、超孔隙水压力变化、工艺参数进行分析和讨论,探讨了真空动力固结在应用于含饱和软粘土夹层地基处理时的加固机理。本文研究进一步拓宽了真空动力固结地基处理方法的适用范围,为我国沿海地区港口码头和道路建设中遇到的大面积吹填土加固问题提供了新的途径。
Combined with a project of large-scale dredger fill foundation treatment in Shanghai, the problem of dredger filled roadbed with saturated soft clay interlayer strengthened by vacuum dynamic consolidation was studied. Through the analysis and discussion on the change of groundwater level, the change of groundwater level and the change of excess pore water pressure during and after consolidation, the reinforcement mechanism of vacuum dynamic consolidation applied to the treatment of saturated soft clay foundation is discussed. This study further widens the application range of vacuum dynamic consolidation ground treatment methods, and provides a new approach for the large area of landfill consolidation problems encountered in the port wharf and road construction in China’s coastal areas.