重型车辆荷载作用下桥梁结构安全分析研究

Analysis and Study of Bridge Structure Safety under Heavy Vehicle Load Effect

重型车辆虽然在整个交通车辆中占有比重较小,但对于特殊交通要求的桥梁,不能只采用现行规范要求荷载等级进行计算,需要按照实际的车列荷载进行加载计算。由于重型车辆荷载的实际汽车荷载效应比规范计算标准值偏大,对于重载交通地区,需要获取实际通行车辆的车重、轴重、轴距、车头间距、车速等参数,对桥梁结构进行整体和局部验算。

The heavy vehicle is small proportion in the whole traffic vehicles, but the special traffic requirement of bridge cannot be calculated according to the load class required in the current code, and is required to upload and calculate based on the practical vehicle loads. Owing to the practical vehicle load effect of heavy vehicle load larger than the calculation standard value of code, it is required to achieve the vehicle weight, axle load, wheel base, space headway, vehicle speed and the other parameters of the practical passing vehicles for the integral and local checking calculation of bridge structure.