东海大桥车辆折算系数计算方法

Calculation Method of Passenger Car Equivalent of Donghai Bridge

将东海大桥的车辆类型分为4类:小型车、中型车、空载集卡车、大型车。在东海大桥车辆折算系数的计算上采用服务水平法,该方法以标准车速度作为折算的等效标准。以小型车为标准车,应用该方法得到了大型车的折算系数;并对方法做出改进,通过不同车型间的等效折算,得到了中型车和空载集卡车的折算系数。结果表明,空载集卡车的折算系数与大型车的折算系数有较大差别,将空载集卡车单独归为一类车型是有必要的。

The vehicle types of Donghai Bridge are divided into four categories, such as small vehicle, medium vehicle, noload truck and large vehicle. The level of service method is used to calculate the passenger car equivalent(PCE) of Donghai Bridge, and this method takes standard vehicle speed as the equivalent standard. Taking small vehicle as the standard vehicle, PCE of large vehicle is obtained by using this method. Through equivalent conversion between different vehicle types, this method is improved and PCEs of medium vehicle and no-load truck are obtained. The results show that PCE of no-load truck is quite different from that of large vehicle, so it is necessary to classify the no-load truck into a single category.