城市行人—非機(jī)動(dòng)車(chē)共享路段交通運(yùn)行特性及分隔設(shè)施設(shè)置應(yīng)用研究
[Abstract]:With the development of social economy and the improvement of motorization level, the city inclines the travel resources and the exiting power to the way of the motor vehicle too much, which results in the road space with "people" as the main body gradually being crowded out by the modern means of transportation. The slow-moving environment is deteriorating day by day. Therefore, the pedestrian-non-motor vehicle shared lane which uses the same road resource is gradually tried as the traffic management mode. In this paper, the effect of mixed slow flow on traffic efficiency and safety of urban pedestrian-non-motor vehicle shared section is discussed. The traffic characteristics and traffic capacity of several shared urban sections are analyzed. Secondly, the mechanism of traffic conflict events is analyzed, and the traffic conflict event number model is constructed considering various factors. Finally, the setting conditions and setting strategies of pedestrian-non-motor vehicle isolation facilities are put forward. First of all, the investigation scheme is selected to investigate the design of the pedestrian / non-motorized road section in the city. The basic traffic parameters, road location distribution characteristics and capacity characteristics are described by static traffic facilities, dynamic traffic operation characteristics, and so on. The statistical law of normal distribution is obtained for all modes of running speed on road sections, in which the average pedestrian speed is basically consistent with the average speed of pure pedestrian traffic flow, and non-motor vehicles are affected by pedestrian traffic on road sections. The speed is significantly lower than that of pure non-motor vehicle traffic. By establishing a regression model, we can get the conclusion that the density of non-motor vehicles on the road is significantly related to the total traffic volume, the proportion of traffic modes and the width of the section, and it is found that with the increase of traffic volume, pedestrians will walk as close as possible to the right-most area. Bicycles are concentrated in the second right area, while electric bikes mainly occupy the leftmost area. Through the statistical analysis of the measured data, it is also found that the actual capacity of bicycle and electric vehicle on the shared road falls within [500-550], [700-750] in unit unites / h _ m, respectively, in the range of [500-550] and [700-750]. Secondly, starting from the definition of shared road comfort, the traffic conflict event number is introduced to quantify the degree of mutual interference between different traffic modes on the shared road, and to find out the running quality of the road section under the condition of slow mixed flow. Combined with the mechanism of conflict events on actual road sections, the occurrence conditions and influencing factors of different traffic modes are refined, and the conflict event number model of two-lane road sections is analyzed and given. Based on the analysis of lane occupancy characteristics, the conflict event number model of multi-lane is determined, and the model is compared with the measured data. It is found that the significant factors affecting the number of events in the shared section are the length, width, total traffic flow rate, proportion of each mode, the ratio of traffic entity flow rate, the average speed and the velocity difference between different modes. This lays a foundation for quantitative description of shared road comfort. Thirdly, the event number model is connected with the service level evaluation, and the bicycle is selected as the evaluation object, considering the road lane occupation and survey sample characteristics. The correlation between the number of events and the level of service is established through the fuzzy cluster analysis of the investigation sample of the number of events, and combined with the actual traffic situation of the road, the relationship between the number of events and the level of service is established. This paper discusses and adjusts the grading standard of service level at all levels and the corresponding range of events. Finally, the paper selects the bicycle service level as the basis, discusses the applicability and setting conditions of the non-separation belt, and then gives the decision flow of the installation of the passenger and non-motor vehicle isolation facilities and the relevant setting suggestions. A case study was carried out.
【學(xué)位授予單位】:東南大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類(lèi)號(hào)】:U491
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