利用收费站称重系统数据的高速公路桥梁车辆荷载效应研究

Vehicle Load Effect of Highway Bridges Based on the Data Taken From Highway Toll Station's Weight System

以一座连续刚构桥为工程背景,利用收费站称重系统数据,探索能反映实际运营状况的高速公路桥梁车辆荷载效应分析方法。利用福建省全省收费站称重系统的车辆荷载数据提取通过桥梁的车辆荷载。基于平衡更新随机过程,建立了高速公路桥梁的车辆荷载效应理论分析方法。利用连续刚构桥健康监测系统实测的车辆荷载效应,对基于收费站称重系统得到的车辆荷载效应分析结果进行验证。结果表明,基于收费站称重系统数据的桥梁车辆荷载效应计算结果与实测结果吻合较好,所建立的方法可以得到不同荷载重现期内的荷载效应最大值分布,并用于桥梁安全性能评估和预测。

In this paper,a rigid-frame bridge was selected as an example,a vehicle load effect analysis method for highway bridge using highway toll station＇s weight system was analyzed. Firstly,the real vehicle load data was taken from highway toll station＇s weight system,then the vehicle load effect model of highway bridges based on the theory of Equilibrium Renewal Process was established. Finally,the results were verified according to the data of the health monitoring system,and the vehicle load effect of the bridge was estimated. The results showed that the calculating results based on the highway toll station＇s weight system were close to the testing ones,and the present method could be used to obtain the extreme value distribution in different load recurrence period,and apply in safety evaluation and vehicle load prediction.