西安城市结构与路网布局对汽车运行模式影响研究  

Influence ＇of Road Network Structure on Car＇s Running Mode in Xi＇an

作　　者：蔺宏良[1] LIN Hong - liang(School of Automotive Engineering, Shaanxi College of Communication and Technology, Xi＇an 710018, China)

机构地区：[1]陕西交通职业技术学院汽车工程学院,陕西西安710018

出　　处：《陕西交通职业技术学院学报》2017年第3期10-14,共5页Journal of Shaanxi College of Communication Technology

基　　金：陕西省教育厅科研计划项目（项目编号：15JK1064）;长安大学汽车运输安全保障技术交通行业重点实验室开放基金（CHD2011SY009）资助

摘　　要：研究城市结构形态、路网布局与汽车运行模式及燃料消耗之间的关系，对于城市交通路网规划与交通管控，实现城市交通的可持续发展具有积极意义。选取以城墙围绕、路网方正为布局特征的西安为研究对象，通过道路试验获取汽车的运行状态数据和燃料消耗数据。借助统计方法，分析了汽车行驶特征参数、运行模式与燃料消耗的关系，并与国内外典型城市行驶模式进行对比。结果发现：西安市区各等级路段上车辆的怠速、加速、减速、匀速工况比例接近，且汽车的平均速度和行驶速度均低于25km／h，不利于城市交通节能减排目标的实现；同时，在城墙和城门处易形成明显的交通“瓶颈”，汽车燃料消耗与污染物排放较高。Study on relationship among urban structure,road network layout and car＇s running mode and fuel consumption has positive significance in the urban traffic road network planning and traffic control so as to realise the sustainable traffic development. Taking Xi＇an as the research object, which typically featured as central axis symmetry, stretchable latex planning structure and surrounded by city walls with founder road network, the road test is designed and conducted in order to acquire the car＇s actual running data and fuel consumption data. By means of statistical method, ear＇s characteristic parameters, running mode and fuel consumption feature are analyzed and com- pared with the domestic and foreign typical urban driving cycle. The results show that in Xi＇an urban roads ,the pro- portion of vehicle＇s idle ,acceleration,deceleration and constant speed conditions in running period are all close to each other while car＇s average speed and running speed are both lower than 25km/h ,which is not good for the urban transportation energy conservation and emissions reduction ;At the same time, the traffic＂ bottlenecks＂ are easy to form in the walls and gates where the proportion of the low speed range and idle condition is bigger,which would lead to higher fuel consumption and pollutant emission.

关 键 词：城市结构 路网布局 道路实验 统计分析 燃料消耗 

分 类 号：U463.6[机械工程—车辆工程]