FWD的沥青路面弯沉盆曲线拟合分析

Analysis of the Curve Fitting of Asphalt Pavement FWD Dynamic Deflection Basin

基于FWD路表弯沉盆特征分析相应数学模型拟合条件,分析Sigmoid函数曲线与其相似型,并将该模型用于拟合不同路面状况的检测弯沉盆,分析拟合不同路面的精度变化,寻求了可以减少理论弯沉盆和实测弯沉盆差异的方法,得出函数Sigmoid曲线用于拟合路面弯沉盆的精度随着路面性能状况PCI的值变大而递增,曲线的形态随PCI差值变化增大而陡增的特点,这些规律将为今后路面健康管理评价提供借鉴.

Based on the fitting characteristics of FWD road table bending basin,the corresponding mathematical model fitting condition is analyzed,and the Sigmoid function curve is similar to that of the model.The model is used to fit the test pendulum with different pavement conditions,and the accuracy of fitting different pavement The results show that the Sigmoid function curve can be used to fit the accuracy of the pavement deflection and the performance of the pavement performance is proportional to the value of the PCI.The shape of the curve is proportional to the difference The greater the value of the sudden increase in the characteristics of these laws will be the future of road health management evaluation to provide reference.