高速公路砂井地基固结度时空变化规律探讨

The space-time analysis for the consolidation degree of the highway sand well roadbed

软基固结度时空变化规律的研究对解决高速公路软基沉降预测问题具有十分重要的意义。本文在讨论固结度时空变化的实质与计算方法的基础上 ,结合京珠高速公路广珠段某软基试验资料 ,初步探讨了高速公路砂井地基固结度的时空变化规律 ,特别提出固结的滞后效应及其对固结沉降曲线形态的影响 ,并简要讨论了砂井直径和间距对固结度的影响 。

The space time analysis for the consolidation degree is very important to the calculation and prediction of soft foundation settlement in highway construction project.Based on the discussion of calculation methods available,the essence of consolidation space time variety analysis,and the test data of soft foundation examination work for Beijing Zhuhai Highway Construction Project,the author gives a preliminary discuss on the space time analysis for consolidation.Especially,the consolidation hysteresis,and its influence on consolidation curves are discussed.The influence by the diameters and spacings of sand wells is also briefly analysed.Finally,the author points out that the further research on microcosmic hydro dynamic course,which taken place during the consolidation of the soft foundation,would be helpful for understanding the space time variety of consolidation.