基于交通调查的重载交通公路桥梁设计车辆荷载探讨  

Study on the Vehicle Load of Bridge Design on Heavy Traffic Highway Based on Traffic Investigation

作　　者：孙吉书[1] 杨春风[1] 窦远明[1] 李宝[1] 

机构地区：[1]河北工业大学土木工程学院,天津300132

出　　处：《河北工业大学学报》2009年第1期91-95,共5页Journal of Hebei University of Technology

基　　金：河北省交通厅科技计划项目(Y070212)

摘　　要：车辆荷载是公路桥梁设计的重要依据和技术指标,直接决定了桥梁的承载能力和经济造价.本文从实际交通调查入手,统计分析重载交通公路上的汽车荷载轴重、轴距和相邻汽车的纵向间距,采用皮尔逊—Ⅲ型曲线进行统计分析,得出汽车队列纵向间距与相应排列图,并计算车辆的荷载效应,与现行桥梁设计规范的荷载作用效应相比较,得出重载交通公路实际车辆荷载与规范车辆荷载之间的关系.有利于合理选用重载交通公路桥梁的设计车辆荷载.Vehicle load is important basis and technical index. It decided the bearing capacity and economic cost of bridge directly. Axsle base, weight and neighboring longitudinal space of vehicles are statistically analyzed based on real traffic investigation in this paper. Through Pearson-Ⅲ type curve analysis, the longitudinal space of vehicles and corresponding arrangement were deduced. Vehicle load effects were calculated and compared with that of current bridge design codes. The relationship between real vehicle load on heavy traffic highway and vehicle load of current codes were determined. These were beneficial to the reasonable selection of design vehcile load on heavy traffic highway bridges.

关 键 词：设计荷载 皮尔逊-Ⅲ型曲线 作用效应 桥梁 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]