高速公路菱型互通式立交技术指标及其适应性研究

发布时间：2018-06-17 23:46

本文选题：高速公路 + 菱型互通式立交　；参考：《长安大学》2014年硕士论文

【摘要】：随着我国高速公路的建设的密集度不断加大，在经济比较发达的地区，高速公路用地比较紧张的问题就会越来越突出。在用地比较紧张的地区和左转交通流量不太大的情况下，相比较于其他的几种互通立交形式，菱型互通式立交的布置形式比较紧凑，不仅可以保障高速道路上直行车辆的运行安全和效率，而且能够减少土地资源的占用面积、降低立交工程的投资费用，如果采用合理的交通组织和管理措施，通行能力也可以较高。本文先对国内外菱型互通式立交的研究文献和报告进行了总结和论述，分析比较了几种常见的互通式立交的几何特性、交通适应性及其优缺点，对菱型互通式立交进行了分类并阐述了各种菱形立交的几何特性、优缺点、交通组织方式及其适应的道路交通条件。通过分析菱型互通式立交各方向匝道车辆的运行特性及其适宜的设计速度，研究匝道及匝道平面交叉范围内平面、纵断面、横断面技术指标并确定了视距的要求。对菱形互通式立交范围内的平面交叉类型及其平面交叉的交通流特性进行分析，确定了匝道平面交叉的交叉角度、适宜的交通管理方式，并对匝道平面交叉范围内的合理渠化方式、道路的限速措施以及平面交叉范围内的视距要求等进行了研究。通过对菱型互通式立交在不同影响因素下的适应性分析，结合已有的一些道路平面交叉的通行能力计算的理论方法和研究模型，，以车辆的跟驰行驶理论为依据，同时考虑混合车流对交通的影响，对驶出高速公路的左转方向匝道的通行能力进行计算分析；以间隙接受理论为依据，同时考虑混合车流对交通的影响，对驶入高速公路左转方向匝道的通行能力计算分析。最后得出了高速公路菱形互通立交左转匝道在二级服务水平下所能适应的最大交通量。希望在互通式立交初期阶段的规划和设计、工程建设以及后期管理运营的过程中提供一些相关参考，这对于我国土地资源的保护、保障互通式立交范围内的安全和效率有着重要的作用。
[Abstract]:With the increasing intensity of expressway construction in China, the shortage of expressway land will become more and more serious in economically developed areas. In areas where land use is relatively tight and where the traffic flow to the left turn is not too large, compared with several other interchanges, the arrangement of the rhombohedral interchange is relatively compact. It can not only guarantee the running safety and efficiency of the direct vehicles on the high speed road, but also reduce the occupied area of land resources and the investment cost of the interchange project. If reasonable traffic organization and management measures are adopted, Capacity can also be higher. This paper first summarizes and discusses the research literature and reports of the rhombohedral interchange at home and abroad, and analyzes and compares the geometric characteristics, traffic adaptability, advantages and disadvantages of several common interchanges. This paper classifies the rhombohedral interchange and expounds the geometric characteristics, advantages and disadvantages, traffic organization mode and the suitable road traffic conditions of various rhombohedral interchanges. Based on the analysis of the running characteristics and the suitable design speed of the ramps in different directions of the rhombohedral interchange, the technical indexes of the plane, the longitudinal section and the cross section in the intersection range of the ramp and the ramp plane are studied and the requirements of the visual distance are determined. This paper analyzes the type of plane crossing and the traffic flow characteristics of plane crossing in the scope of rhombus interchange, and determines the intersection angle of ramp plane intersection and the suitable traffic management mode. The reasonable channelization mode within the ramp plane crossing range, the speed limit measures of the road and the requirements of the visual distance in the plane crossing range are also studied. By analyzing the adaptability of the rhombohedral interchange under different influence factors, combining with the existing theoretical methods and research models of the capacity calculation of the road plane intersection, and based on the car-following theory of the vehicle, the paper analyzes the adaptability of the rhombohedral interchange under different influence factors. At the same time, considering the influence of mixed vehicle flow on traffic, the capacity of the left turning ramp is calculated and analyzed, and the influence of mixed vehicle flow on traffic is considered according to the gap acceptance theory. Calculation and analysis of the capacity of the ramp in the left turning direction of the freeway. Finally, the maximum traffic volume of the left turn ramp of the rhombus interchange is obtained under the secondary service level. It is hoped that the planning and design of the interchange in the initial stage, the construction of the project and the later management and operation of the interchange will provide some relevant references for the protection of our country's land resources. It plays an important role in ensuring the safety and efficiency of interchange.
【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】：U412.352.1

【参考文献】