摘要
在物料运输量大、强度高且空间资源有限的土木水利工程中,道路交叉口作为承接工程物料运输的基础与核心要素,对物料的运输效率及安全影响重大.为模拟复杂道路交叉口的通行状态,提升交叉口的运输安全与效率,本文构建了一种通用且直观的道路交叉口仿真模型,并通过工程实例进行了模型验证.首先,在分析交叉口通行状况的基础上,构建交叉口通行时间计算模型;其次,模拟真实施工现场,在有无信号灯的情况下分别构建了基于EZStrobe的交叉口仿真模型,仿真计算并输出道路交叉口物料运输效率与成本;最后,以水利工程双向四路交叉口为例,通过改变车流量及信号灯的设置,对不同交通运输方案进行仿真计算并将结果进行对比分析.结果表明,模型仿真结果符合道路交叉口的存在降低了运输效率的现象以及提高了运输成本的客观问题,验证了模型的可行性;此外设置合理的交通信号灯时长以及车流量有利于提高交叉口通行效率,表明本文建立的仿真模型可以有效评价运输效率并估算运输费用,为道路交通运输系统中的交叉口组织选择提供了一定参考.
In civil and water conservancy projects with large material transportation volume,high strength and limited space resources,road intersections,as the basis and core elements for undertaking engineering material transportation,have a great impact on the transportation efficiency and safety of materials.In order to simulate the traffic state of complex road intersections and improve the transportation safety and efficiency of intersections,this paper constructs a general and intuitive road intersection simulation model,and verifies the model through engineering examples.Firstly,based on the analysis of intersection traffic conditions,the intersection traffic time calculation model is constructed.Secondly,simulating the real construction site,the intersection simulation model based on EZStrobe is constructed with or without signal lights,and the material transportation efficiency and cost of road intersection are simulated and output.Finally,taking the two-way four-road intersection of water conservancy project as an example,the simulation calculation of different transportation schemes is carried out by changing the traffic flow and the setting of signal lights,and the results are compared and analyzed.The results show that under this project,the simulation results of the model in this paper are in line with the phenomenon that the existence of road intersections reduces transportation efficiency and improves the objective problem of transportation costs,which verifies the feasibility of the model.In addition,in this example,setting a reasonable length of traffic lights and traffic flow is conducive to improving the efficiency of intersection traffic.It shows that the simulation model established in this paper can effectively evaluate the transportation efficiency and estimate the transportation cost,which provides a certain reference for the selection of intersection organization in road traffic transportation system.
作者
谭秋杰
赵春菊
周华维
梁志鹏
TAN Qiujie;ZHAO Chunju;ZHOU Huawei;LIANG Zhipeng(College of Hydraulic&Environmental Engineering,China Three Gorges Univ.,Yichang 443002,China;Hubei Key Laboratory of Construction&Management in Hydropower Engineering,China Three Gorges Univ.,Yichang 443002,China;School of Civil Engineering,Architecture&Environment,Hubei Univ.of Technology,Wuhan 430068,China)
出处
《三峡大学学报（自然科学版）》
CAS
2023年第6期29-35,共7页
Journal of China Three Gorges University：Natural Sciences
基金
国家自然科学基金(51779131)
国家自然科学青年基金(52109157)。
关键词
交叉路口
通行效率
交通信号灯
交通仿真
交通运输
crossroad
traffic efficiency
traffic light
traffic simulation
transportation
