沥青路面使用性能的双参数修正预测模型

为精确预测沥青路面使用性能,根据沥青路面性能曲线标准衰变方程中形状因子与寿命因子的敏感度不同,视形状因子为主要动态参数,采用改进参数自适应跟踪法进行预测,视寿命因子为交通轴载的函数,并对其进行修正,依据修正后的双参数建立了沥青路面使用性能双参数修正预测模型。计算结果表明:沥青路面使用性能双参数修正预测值和实测值最接近,误差最小,因此,该模型预测精度高。

Service performance prediction model of asphalt pavement with two corrected parameters

In order to accurately evaluate the service performance of asphalt pavement,the standard disintegration equation of performance curve of asphalt pavement was studied,the function differences of its shape factor and life factor were analyzed,the shape factor was taken as main dynamic parameter and predicted by adopting modified parameter self-adaptation method,the life factor was taken as a function of traffic load and modified,and a service performance prediction model of asphalt pavement with two corrected parameters was set up.Computation result shows that the prediction value of the model accords with the measure value for the performance,its computation error is minimum,so the prediction precision of model is high.2 tabs,3 figs,9 refs.