基于全球定位系统的典型重车行驶性能

Performance of Typical Heavy Vehicle with Globe Position System

摘要:

通过基于全球定位系统的实际调查，得到了不同比功率、不同装载情况下的重车行驶性能曲线.研究发现，当坡度为2%、坡长为800 m时，空载、实载、超载的重车速度分别下降5，13，20 km·h-1；坡度为3%时，对应的数值分别为5，25，44 km·h-1.与美国通行能力手册中的典型重车行驶曲线对比发现，在相同的比功率、坡度为2%情况下，我国重车的速度比美国重车小10 km·h-1，而超载车辆的速度则较美国重车小30 km·h-1；在坡度为3%情况下，对应的数值分别是11，36 km·h-1.

Abstract:

The performances of typical heavy vehicles were collected by an investigation with globe position system(GPS). The influence rules of gradient and loading situation were studied. The result shows: when the gradient is 2% and slope length is 800 meter, the speed drops of empty, fully loading and overloading heavy vehicle are 5 km·h-1, 13 km·h-1, and 20 km·h-1 respectively, the values turn out to be 5 km·h-1, 25 km·h-1, and 44 km·h-1 when the gradient is 3%. Comparison between performance curves of heavy vehicles in China and American Highway Capacity Manual shows: when the gradient is 2%, the speed of fully loading heavy vehicles in China is 10 km·h-1 lower than heavy vehicles in America while the speed of overloading heavy vehicle is slower by 30 km·h-1; when the gradient is 3%, the number is 11 and 36 km·h-1 respectively.