基于双曲线模型的软土路基沉降预测研究

某软土路基试验段采用真空-堆载联合预压法处理,以该试验段测得的竖向变形数据为基础,建立双曲线预报模型并进行沉降量预测。通过与实测资料进行比较分析表明,基于双曲线模型的推算值与实测值较为接近,沉降预测曲线与实际观测曲线吻合度较高,能较好的反映真空-堆载联合预压法加固软土路基土体沉降量随时间发展变化的全过程,从而说明该模型在该地区真空-堆载联合预压加固软土路基的沉降预测中是可行的。

Soft Soil Foundation Settlement Prediction Based on Hyperbolic Model

Abstract： In construction of a soft soil foundation, the vacuum and preloading method was used to consolidate the soft soil in test section. Take the measured vertical deformation data as the basis for the establishment of the hyperbolic prediction model and the final settlement forecast. By comparison with the measured data shows that , the projected value based on the hyperbolic model are close to the measured values,consistent high between subsidence prediction curves and the observed curve, can be a better response to changes of the soil settlement in the whole process, and have got the result that the hyperbolic model was feasible in the reinforcement of soft soil foundation settlement prediction by vacuum and preloading method.