堆载预压处理软土地基中固结系数的反分析计算方法

Back Analysis Method of Consolidation Coefficient in Preloading Dealing with Soft Ground

通常室内试验方法确定的软土固结系数精确度较低。针对该问题,在堆载预压实际工程试验段施工中,根据现场实测的沉降数据,选用双曲线法推算最终沉降量,并用该值计算出地基软土的实际平均固结度。用该固结度与试验得出的固结系数所计算的固结度相比较,最终确定试验固结系数的修正系数。得出了用实测数据反分析固结系数是可行的结论。为该区域软土地基处理和设计,提供参考。

Consolidation coefficient of soft soil is usually not accurate by laboratory tests. To deal with this matter, hyperbola method is chosen to estimate the final settlement in practical preloading test stage construction, based on field measurement data figure out the actual average consolidation of soft foundation. Comparingthe consolidation value with that through test, confirm a correction factor on the test method of coefficient of the consolidation, to offer a reference for the treatment and design phase. A conclusion is drawn that it is feasible to calculate the coefficient of consolidation based on back analysis method.