双喇叭类互通式立交适应性及技术指标研究

发布时间：2018-01-29 23:37

本文关键词： 高速公路互通式立交双喇叭连接线交织区收费站　出处：《长安大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着我国经济建设的快速发展和汽车保有量的大幅增加，交通拥挤及高速公路互通式立交规模问题日益突出，成为人们广泛关注的焦点。互通式立交是高速公路路网系统完善的重要组成部分，是相交道路通过空间分离实现车辆交通转换的纽带，而双喇叭类互通式立交是目前应用较广的互通式立交组合型式之一。双喇叭类互通式立交的适应性和技术指标是双喇叭类互通式立交设计合理规模控制及保证车辆运行顺畅的关键，也是双喇叭类互通式立交设计理论不断发展和成熟的基础。本文对双喇叭类互通式立交进行研究分类，并对其交通条件、自然条件、社会条件、管理方式及经济性等影响因素进行分析。同时通过对车辆的运行特性、速度特性、交织区交通流特性、收费站交通流特性等特性的分析，基于不同路段的特点运用不同的交通量计算模型，，建立了双喇叭类互通式立交的通行能力计算模型。通过对目前服务水平等级划分和评价方法的分析，基于交通流稳定性分析，以车辆的运行速度和交通密度作为立交各部分服务水平的划分标准，提出了不同设计速度下的服务水平分级指标及服务水平的选取方法。另外，根据连接线是否设置收费站，分别研究连接线技术指标。基于理想安全间隙模型计算出不同设计速度条件下交织区理想安全间隙值，根据最小换车道长度模型得出不同设计速度不同车道数条件下连接线的长度建议值。分析汽车行驶轨迹和舒适性计算出收费广场渐变率合理取值；以圆形轨迹换道模型为基础计算不同速度条件下收费广场长度取值；通过研究大型车辆在收费广场的安全停车距离，提出了不同情况下收费广场至匝道分流端的长度与坡度的建议值。
[Abstract]:With the rapid development of China's economic construction and the great increase of automobile quantity, the traffic congestion and highway interchange scale problems have become increasingly prominent, has become the focus of attention. The interchange is an important part to improve the highway network system is the intersection of road traffic separation link to realize the conversion through space, and double horn such interchange is one of the most widely used interchange combinations. Double trumpet interchange and the adaptability of technical indicators is a double trumpet interchange design model control rules and reasonable key to ensure the smooth operation of the vehicle, and also is the foundation of development of double trumpet interchange design theory and mature.
This paper studied the classification of double trumpet interchange, and the traffic conditions, natural conditions, social conditions, influence factors and economic management. At the same time, through the analysis of vehicle operation characteristics, speed characteristics, weaving area traffic flow characteristics, analysis of the toll station traffic flow characteristics characteristics, different characteristics the use of different sections of the traffic volume based on the calculation model, established the calculation model of double trumpet interchange capacity. Through the analysis of the current level of service classification and evaluation method, traffic flow stability analysis based on the vehicle speed and traffic density as the division standard of interchange each part of the service level, put forward the method of choosing different design speed of the service level classification index and service level.
In addition, according to the connection line is set to the toll station, respectively connecting line technical indicators. Ideal security clearance values interweave ideal safe gap model to calculate the different design speeds based on suggestions according to the length of connecting line minimum length model of lane changing different design speed under the condition of different lane number value. Analysis of the vehicle trajectory and comfort the calculated charge square transition ratio is calculated on the basis of reasonable value; different speed conditions to the toll plaza length circular track lane changing model; through the study of large vehicles in the Toll Plaza parking safety distance is proposed, and the length of slope under different conditions to the toll plaza ramp on the end of the recommended value.

【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

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