江苏海相软土压缩特性试验研究

Study on compressibility of Jiangsu marine clay

对原状江苏海相软土样进行一维压缩和蠕变试验研究。试验数据表明,江苏海相软土的初始压缩指数Cc和次压缩指数Cα与天然含水率和孔隙比具有一定相关性,尽管初始压缩指数Cc和次压缩指数Cα不是常数,Cc和Cα与垂向压力大小有关,Cc和Cα在统计意义上又有相关性,且Cα/Cc接近常数,基于Cα/Cc比值可预测次固结变形,理论预测结果与实测结果基本一致。

One-dimensional compression and creep tests on undisturbed soil samples of Jiangsu marine clay were performed. It was shown that the initial compression index, Cc, and the second compression index, Ca, were related with the natural water content, the initial void ratio and the vertical pressure. Although Cc and Ca were not constant, the two parameters were related in statistical data, and Ca/Cc was approximately a constant. The second consolidationary settlement could be predicted based on Ca/Cc The results of theoretical prediction basically agreed with the measured data.