高速公路养护作业区交通组织方案优化关键技术研究
发布时间：2019-04-20 09:42
【摘要】：随着我国高速公路里程的快速增长，截止到2013年7月国内高速公路网已建设完成78.5%。由于我国交通运输呈现出交通量迅猛增长、重载车比例大和单车超载严重等特点，初期建设的高速公路无论从承担的运营能力或是路面行驶舒适性方面都难以适应现代交通运输大发展的需要。因此，高速公路改扩建和局部路段养护工程将会骤然增加；改扩建和养护工程的进行，势必会影响到正常路段的行车通畅性和安全性。为了保证作业区路段较高的通行能力，又不降低行车及施工的安全性，科学有效地制定作业区交通组织方案十分必要。 首先，本文借鉴国内外相关领域研究方法与成果，从影响作业区交通组织的交通流特性、驾驶员特性、道路特性和车辆行驶特性等方面进行数据调研分析；并根据作业区影响因素特性及交通组织方案试运行特征，决定采用Vissim微观交通仿真进行参数及方案评价，以达到方案设计与评价的可重复性； 其次，基于国内养护作业交通组织相关技术规范，结合多个改扩建工程保通成功实施案例，明确作业区交通组织方案设计的关键参数及流程；针对交通组织方案须满足行车通畅性与安全性的原则，科学比选评价指标并提出适用于多指标的评价方法，以完成对关键参数及交通组织方案的评价体系构建； 最后，以双向四车道高速公路最常见的两类封道模式，，即封闭外（内）车道和半幅封闭开放中央分隔带模式进行分析。借鉴交通部和地方相关规程，提出优化后的限速模式（警告区400m处限速80km/h，1200m处限速60km/h）整体安全性较高；并根据作业区路段服务水平提出工作区建议设置长度阈值；进一步针对半幅封闭开放中分带模式下，从行车轨迹理论计算和仿真角度出发，提出满足一定通畅性与安全性的中央分隔带合理开口长度建议值80m；并推荐采用中分带开口前设置80m车辆合流渐变段进行车辆合流，进入100m合流缓冲段以形成稳定车流的方式，以平稳跨越中央分隔带。
[Abstract]:With the rapid growth of highway mileage in China, 78.5% of the highway network has been built by July 2013. Because of the rapid growth of traffic volume, heavy duty vehicle proportion and the serious overload of bicycles and so on, the traffic and transportation in our country are increasing rapidly. It is difficult to adapt to the great development of modern transportation in terms of operating capacity or road driving comfort in the early stage of highway construction. Therefore, the reconstruction and expansion of expressway and the maintenance of local sections will increase abruptly, and the construction of reconstruction and expansion and maintenance will inevitably affect the traffic patency and safety of normal sections of the road. In order to ensure the high traffic capacity of the working area and not to reduce the safety of driving and construction, it is necessary to formulate the traffic organization plan of the working area scientifically and effectively. First of all, this paper draws lessons from the domestic and foreign research methods and achievements in the related fields, from the traffic flow characteristics, driver characteristics, road characteristics and vehicle driving characteristics of the traffic organization in the operation area to carry on the data investigation and analysis. According to the characteristics of the influencing factors in the operation area and the trial operation characteristics of the traffic organization scheme, it is decided to use the Vissim microscopic traffic simulation to evaluate the parameters and schemes, in order to achieve the repeatability of the scheme design and evaluation. Secondly, based on the relevant technical specifications of domestic maintenance operation traffic organization, combined with a number of successful implementation cases of the renovation and expansion project, the key parameters and process of traffic organization scheme design in the operation area are defined. In view of the traffic organization scheme must meet the principle of traffic patency and safety, the evaluation index is selected scientifically and the evaluation method suitable for multi-index is put forward in order to complete the evaluation system of the key parameters and traffic organization scheme. Finally, the two most common closure modes of two-way four-lane expressway, namely, closed outer (inner) lane and half-closed open central partition mode, are analyzed. Referring to the relevant regulations of the Ministry of Communications and local authorities, the optimized speed limit mode (400m speed limit 80kmh, 1200m speed limit 60km/h) is safe as a whole, and according to the service level of the road section in the working area, the length threshold is suggested to be set up in the working area. Based on the theoretical calculation and simulation of the driving path, a reasonable opening length of 80 m is proposed for the central partition belt, which satisfies certain patency and safety in the semi-closed open middle zone mode. It is recommended that 80 m vehicle convergence gradient section be set up before the opening of the middle zone, and enter 100 m convergence buffer section in order to form a stable traffic flow, so as to smoothly cross the central separation zone.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418;U491
本文编号：2461493
[Abstract]:With the rapid growth of highway mileage in China, 78.5% of the highway network has been built by July 2013. Because of the rapid growth of traffic volume, heavy duty vehicle proportion and the serious overload of bicycles and so on, the traffic and transportation in our country are increasing rapidly. It is difficult to adapt to the great development of modern transportation in terms of operating capacity or road driving comfort in the early stage of highway construction. Therefore, the reconstruction and expansion of expressway and the maintenance of local sections will increase abruptly, and the construction of reconstruction and expansion and maintenance will inevitably affect the traffic patency and safety of normal sections of the road. In order to ensure the high traffic capacity of the working area and not to reduce the safety of driving and construction, it is necessary to formulate the traffic organization plan of the working area scientifically and effectively. First of all, this paper draws lessons from the domestic and foreign research methods and achievements in the related fields, from the traffic flow characteristics, driver characteristics, road characteristics and vehicle driving characteristics of the traffic organization in the operation area to carry on the data investigation and analysis. According to the characteristics of the influencing factors in the operation area and the trial operation characteristics of the traffic organization scheme, it is decided to use the Vissim microscopic traffic simulation to evaluate the parameters and schemes, in order to achieve the repeatability of the scheme design and evaluation. Secondly, based on the relevant technical specifications of domestic maintenance operation traffic organization, combined with a number of successful implementation cases of the renovation and expansion project, the key parameters and process of traffic organization scheme design in the operation area are defined. In view of the traffic organization scheme must meet the principle of traffic patency and safety, the evaluation index is selected scientifically and the evaluation method suitable for multi-index is put forward in order to complete the evaluation system of the key parameters and traffic organization scheme. Finally, the two most common closure modes of two-way four-lane expressway, namely, closed outer (inner) lane and half-closed open central partition mode, are analyzed. Referring to the relevant regulations of the Ministry of Communications and local authorities, the optimized speed limit mode (400m speed limit 80kmh, 1200m speed limit 60km/h) is safe as a whole, and according to the service level of the road section in the working area, the length threshold is suggested to be set up in the working area. Based on the theoretical calculation and simulation of the driving path, a reasonable opening length of 80 m is proposed for the central partition belt, which satisfies certain patency and safety in the semi-closed open middle zone mode. It is recommended that 80 m vehicle convergence gradient section be set up before the opening of the middle zone, and enter 100 m convergence buffer section in order to form a stable traffic flow, so as to smoothly cross the central separation zone.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418;U491
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