分离式立交设置条件及技术指标研究

发布时间：2018-03-16 10:30

本文选题：分离式立交　切入点：道路功能　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：分离式立交使路网节点处交通流在空间上分离,消除了交通冲突,保证了直行车流安全、快速运行。随着路网的密集度增加,分离式立交的作用越来越明显,而关于分离式立交的设置条件、技术指标的选取还存在诸多问题亟待解决。本文以国内外研究理论为依据,通过理论研究、统计分析并与实际问题相结合的方法,对分离式立交设置条件及关键技术指标选取进行研究,研究内容包括道路功能对交叉形式选择的影响、分离式立交设置的交通量条件、分离式立交合理间距确定、分离式立交合理净空选择、分离式立交合理交角范围。根据路网规划、道路功能对道路等级、控制标准的要求,建立道路功能、等级与交叉形式关系,初步确定交叉处可选用的交叉形式范围。基于可接受间隙理论、车队理论分别研究主路优先、自由行驶无信号平面交叉通行能力计算方法,结合国内对无信号平面交叉交通特性参数调查,以无转弯需求为前提,计算无信号平面交叉通行能力,提出次干线一级公路、二级公路设置分离式立交交通量条件。采用饱和流率法,借鉴日本立体交叉交通量规划方法,提出二级、三级、四级公路间交叉设置分离式立交的交通量条件。分析影响分离式立交间距的因素,引入节点重要度概念,结合聚类分析法,建立了分离式立交合理间距计算模型,对比美、日标准分析分离式立交净空要求,结合实际问题,提出了确定分离式立交合理净空的方法。从满足经济、利于施工标准化、受力安全角度出发,确定了分离式立交交角合理范围。
[Abstract]:The separated interchange separates the traffic flow at the node of the road network in space, eliminates the traffic conflict, and ensures the safety and fast running of the direct traffic flow. With the increase of the density of the road network, the function of the separated interchange becomes more and more obvious. However, there are still many problems to be solved in the selection of technical indexes about the setting conditions of separation interchange. This paper is based on the domestic and foreign research theories, through theoretical research, statistical analysis and the method of combining with practical problems. This paper studies the setting conditions and key technical indexes of separated interchange, including the influence of road function on the choice of cross form, the traffic flow condition of separation interchange, and the determination of reasonable distance between separated interchange, According to the requirements of road network planning, road function to road grade and control standard, to establish the relationship between road function, grade and cross form, according to the reasonable clearance selection of separated interchange, the reasonable angle range of separation interchange, and the requirements of road network planning, road function and control standard, Based on the acceptable gap theory, the motorcade theory respectively studies the calculation method of the crossing capacity of the main road with no signal and no signal. Based on the investigation of traffic characteristic parameters of unsignalized plane crossing in China, and on the premise of no turning requirement, the traffic capacity of unsignalized plane crossing is calculated, and the sub-trunk first class highway is put forward. The second class highway sets up the separation type interchange traffic volume condition, uses the saturated flow rate method, draws lessons from the Japanese three-dimensional cross traffic volume planning method, proposes two, three levels, This paper analyzes the factors that influence the separation interchange spacing, introduces the concept of node importance, and establishes a reasonable distance calculation model of separated interchange with cluster analysis method. According to the daily standard analysis of separation interchange clearance requirements, combined with practical problems, this paper puts forward a method to determine the reasonable clearance of separation interchange. From the point of view of satisfying the economy, facilitating the construction standardization and force safety, The reasonable range of the angle of separation interchange is determined.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U412.352

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