【作者】 王楠；

【导师】 赵永平；

【作者基本信息】 长安大学 ， 道路与铁路工程， 2011， 硕士

【摘要】 随着近年我国社会经济的快速发展和车辆保有量的快速增长,早期建设的部分主干线高速公路交通量已趋于饱和,高速公路的改扩建将成为我国未来高速公路发展的趋势和重要的问题。改扩建工程与新建工程相比较,设计方面有许多不同的地方,对高速公路改扩建进行研究具有重要的现实意义。在此背景下,论文通过整理国内改扩建工程的成功经验以及相关的文献资料,确定了论文研究的重点。首先论文对改扩建工程的建设标准进行研究,确定改扩建的规模和技术标准；其次论文结合平面设计、纵断面设计、横断面设计等方面进行分析,提出了高速公路改扩建中路线设计的思路,对既有线路平面拟合设计和纵断面拟合设计的方法进行总结,同时对横断面的主要几何设施的设计进行相关分析；最后对横断面拓宽的结构形式进行比选研究。本论文通过研究国内成功的改扩建工程和新建高速公路的不同之处入手,对改扩建高速公路的平纵横设计的研究提出了思路和方法,为高速公路改扩建路线设计的标准化做出了一定的贡献。更多还原

【Abstract】 With the recent rapid economic development of our society and the rapid growth of vehicle ownership, the early part of the construction of trunk highway traffic has become saturated, freeway expansion project is the important issues facing to road construction. For the reasons of the new-building is distinct from rebuilding, freeway research has important practical significance.In this context, the papers determine the focus of this study by finishing the success of national reconstruction and extension project and the related literature examples. First paper on the expansion project of the construction standards for studies to determine the scale of reconstruction and extension and technical standards; Second paper combines the flat, vertical and horizontal design of the main technical indicators, shows the expansion project for the design and longitudinal plane fitting method of fitting design, and the main geometric cross-sectional design of the facility to make correlation analysis, and cross-sectional geometry of the main design of the facility to make correlation analysis; Finally, the structure of the cross-sectional form widening of comparison, the same time, unilateral widening of the median were targeted research.This paper studies the country successfully through the renovation and expansion project and the difference between the new highway and expansion of highway design level aspect, proposed ideas and methods. Old freeway extension route is designed to make a certain contribution to the standardization.更多还原