促进正定古城与新区融合发展高速公路下沉改造研究

Study on Sinking Reconstruction of Expressway to Promote Integrative Development of Zhengding Ancient City and New District

为促进正定古城与正定新区的融合发展,打破现状高速分隔造成的壁垒,结合现状情况及正定县总体规划成果对高速的改建形式进行三种方案的比选研究。针对不同段落合理选择相适应的建设形式,在紧邻古城墙段提出敞开式隧道加盖拱形玻璃罩棚的建设形式。与传统隧道方案相比,在保证高速公路交通功能的同时,又能满足通风及采光要求,节约工程投资和能源。

In order to promote the integrative development of Zhengding Ancient City and Zhengding New District, the barrier caused by the high-speed separation of the status quo should be broken down. Combined with the present situation and the overall planning of Zhengding County, this paper compares and studies three schemes of high-speed reconstruction, and reasonably selects the suitable construction forms for the different sections. This paper puts forward the construction form of open-type tunnel and arched glass canopy for the section next to the ancient city wall, which not only ensures the traffic function of expressway, but also meets the requirements of ventilation and day lighting and saves the engineering investment and energy source by compared with the traditional tunnel scheme.