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大桥引道纵坡设计,要在很大程度上影响交通设施的服务水平和工程造价。在当今我国汽车工业比较落后的情况下,如何从纵坡设计方面,针对国产汽车的发展规划,考虑今后汽车性能的发展水平,充分利用目前汽车的爬坡能力,以尽可能地降低工程造价,这是一个极为现实的问题。本文通过(?)国产汽车爬坡性能的分析,以车速服务水平和营运经济指标为衡量标准,提出了大桥引道纵坡,应以目前国产中型货车爬坡能力为准,对货车及公交车交通近期施行不同服务水平远期趋向一致的设计原则,同时,也提出了提高近期引桥上车速服务水平的可能途径。最后,对远期大桥引道上的车速服务水平也作了展望。
Longitudinal slope design approach to the bridge, to a large extent, affect the service level of transportation facilities and construction costs. In today’s China’s automobile industry is relatively backward situation, how to design from the longitudinal slope, for the development plan for domestic cars, consider the future development of automotive performance level, make full use of the current car climbing ability to reduce project costs as much as possible, This is a very real problem. Based on the analysis of (?) Home-made car climbing performance, taking the vehicle speed service level and operating economy index as the standard, the paper puts forward the longitudinal approach of bridge approach road, Traffic recently implemented different service levels tend to be the same long-term design principles, at the same time, also proposed to improve the speed of service on the approach approach to the possible ways. Finally, the paper also gives a prospect of the service level of speeding on the approach bridge of Long-distance Bridge.