在城市建设过程中,往往面临少数畸形交叉口难以处理的问题,而在历史变迁的过程中,这些交叉口又是作为城市交通网络的关键节点,其交通量大、交通组成复杂,这些交叉口的通行效率下降,将直接对路网的整体通行能力和区域的交通安全产生不良...在城市建设过程中,往往面临少数畸形交叉口难以处理的问题,而在历史变迁的过程中,这些交叉口又是作为城市交通网络的关键节点,其交通量大、交通组成复杂,这些交叉口的通行效率下降,将直接对路网的整体通行能力和区域的交通安全产生不良影响,这实则是城市路口精细化管理持续推进、交通量迅猛增长的必然结果。文章通过对桂林市临桂区的某五路交叉口的交通参数进行实地调查和分析,再基于VISSIM仿真技术对五路交叉口进行仿真模拟,找出造成拥堵问题的原因,对现存问题进行剖析,针对五路交叉口存在的问题进行渠化设计方案,利用韦伯斯特配时法对信号配时进行优化,最后采用VISSIM仿真技术对该五路交叉口优化前后进行仿真对比分析,各进口道的排队长度和车辆延误、停车延误和停车次数均得到改善。结果表明,交叉口的精细化管理能够有效降低排队长度和车辆延误,提升五路交叉口的通行能力。In the process of urban construction, often faced with a few deformed intersections difficult to deal with the problem, and in the process of historical changes, these intersections are key nodes of the urban transport network, its traffic volume is large and traffic composition is complex, the decline in the efficiency of these intersections will directly have an adverse impact on the road network’s overall accessibility and regional traffic safety, which in fact is the inevitable result of the continuous fine management of urban intersections and the rapid growth of traffic volume. The article, through the Guilin Lingui District of a five-way intersection traffic parameter for field investigation and analysis and then based on the VISSIM simulation technology of the five-way intersection simulation, finds out the causes of congestion, analyzes the existing problem, carries out the canalization design scheme for the problems of the five-way intersection, and uses Webster timing method for signal timing optimization. Finally, VISSIM simulation technology is used to compare and analyze the simulation before and after the optimization of the five-way intersection, and the queue length and delay time, stopping delay and number of stops of each inlet channel are improved. The results show that the fine management of intersections can effectively reduce the queue length and delay time and improve the capacity of the five-way intersection.展开更多
文摘在城市建设过程中,往往面临少数畸形交叉口难以处理的问题,而在历史变迁的过程中,这些交叉口又是作为城市交通网络的关键节点,其交通量大、交通组成复杂,这些交叉口的通行效率下降,将直接对路网的整体通行能力和区域的交通安全产生不良影响,这实则是城市路口精细化管理持续推进、交通量迅猛增长的必然结果。文章通过对桂林市临桂区的某五路交叉口的交通参数进行实地调查和分析,再基于VISSIM仿真技术对五路交叉口进行仿真模拟,找出造成拥堵问题的原因,对现存问题进行剖析,针对五路交叉口存在的问题进行渠化设计方案,利用韦伯斯特配时法对信号配时进行优化,最后采用VISSIM仿真技术对该五路交叉口优化前后进行仿真对比分析,各进口道的排队长度和车辆延误、停车延误和停车次数均得到改善。结果表明,交叉口的精细化管理能够有效降低排队长度和车辆延误,提升五路交叉口的通行能力。In the process of urban construction, often faced with a few deformed intersections difficult to deal with the problem, and in the process of historical changes, these intersections are key nodes of the urban transport network, its traffic volume is large and traffic composition is complex, the decline in the efficiency of these intersections will directly have an adverse impact on the road network’s overall accessibility and regional traffic safety, which in fact is the inevitable result of the continuous fine management of urban intersections and the rapid growth of traffic volume. The article, through the Guilin Lingui District of a five-way intersection traffic parameter for field investigation and analysis and then based on the VISSIM simulation technology of the five-way intersection simulation, finds out the causes of congestion, analyzes the existing problem, carries out the canalization design scheme for the problems of the five-way intersection, and uses Webster timing method for signal timing optimization. Finally, VISSIM simulation technology is used to compare and analyze the simulation before and after the optimization of the five-way intersection, and the queue length and delay time, stopping delay and number of stops of each inlet channel are improved. The results show that the fine management of intersections can effectively reduce the queue length and delay time and improve the capacity of the five-way intersection.
