城市化发展下高速公路路线设计指标研究

近年来,我国城市经济不断发展,城市的边界也不断向外扩展,导致原先的郊区高速公路内化入市区,这就在一定程度上阻碍了城市的发展。按照原有的指标设计的高速公路由于新线位布置困难,红线宽度不够等问题而使其在城市化改造的过程中遇到许多问题。为了解决这些问题,我们探究了一些考虑到后期城市化改造的路线,并且分别在交叉口、纵断面、横断面以及平面等四个方面展开研究。考虑到那些近郊的新建高速公路线路有内化进城市内的情况发生,为了防止以后高速路线城市化改造的困难,就可以按照考虑后期城市化改造的高速公路的设计指标来修建。

In recent years, with the continuous development of urban economy in China, the boundaries of the city have been expanding, resulting in the internalization of the original suburban expressway into the urban area, which to a certain extent hindered the development of the city. The freeway designed according to the original index has encountered many problems in the process of urbanization because of the difficulty- of layout of the new line and the insufficient width of the red line. In order to solve these problems, we explore some routes that take into account the late urbanization transformation, and ca^- out research in intersection, vertical section, cross section and plane. Considering that the new expressway lines in the suburbs are internalized into the city, in order to prevent the difficulty of the urbanization transforInation of the high-speed line in the future, we can build the expressway according to the design index of the highway considering the later urbanization transformation.