标准疲劳车荷载模型研究

Study on Standard Fatigue Vehicle Load Model

基于三条高速公路实测车辆荷载数据,采用等效损伤原理、泄水法及损伤比理论,推算出适用于工业化中后期地区的标准疲劳车;利用极值理论的POT模型构建了车辆荷载尾部分布描述,得到了荷载增长系数,获得标准疲劳车辆荷载模型。与现行规范采用的疲劳车辆模型相比:模型具有更好的适用性和安全冗余度,对我国公路桥梁疲劳涉及具有一定参考价值。

According to the data of vehicle information from three highway, the standard fatigue vehicle applied to industrial areas in the middle and late was obtained, which adopted equivalence princi- ple damage , Sluicing Method and damage ratio theory. Extreme value theory and POT model were a- dopted to build distribution description of vehicle load tail, obtain load factor for growth, then obtain standard fatigue vehicle load model. The model we obtained had a better suitability and safe redundancy than others when Compared with fatigue vehicle model which adopted by current Specifications. This has a certain reference value for the fatigue design of highway bridges.