不同固结系数计算方法之间的比较

Comparisons of Consolidation Coefficients Obtained from Different Methods

运用底部可测孔压的固结仪对连云港重塑黏土进行一维固结压缩试验,探讨基于孔压得出的土体固结系数与基于压缩计算的固结系数之间的关系.针对100kPa、200kPa、400kPa、800kPa、1600kPa 5个加载等级的固结过程进行分析,发现基于孔压数据得出的固结系数Cv和时间对数法的计算结果较为一致,但是小于时间平方根法的计算结果.另外,3种计算方法均显示,连云港重塑土固结过程中,其固结系数Cv随着荷载等级的增大而增大,在固结过程中并非常数.

Oedometer tests with measurements of excess pore water pressure at the base of specimens were performed on remolded Liangyungang clay to compare the values of consolidation coefficient Cv determined by different methods . The analysis of the consolidation process at five loading stress levels of 100 kPa, 200 kPa, to those obtained from logarithmic method but less than those obtained of Cv determined by all the three methods are not a constant during the gang clay. The values of Cv increase with the increasing consolidation from√t method. In addition, the values consolidation of the remolded Lianyun- stress.