福州市尤溪洲北桥头互通立交改造方案研究

Research on interchange transformation scheme for northern end of Youxizhou Bridge in Fuzhou

在既有互通立交上进行升级改造设计较新建项目难度大,涉及的影响因素多。本文基于福州市尤溪洲北桥头互通的建设条件,从现状存在问题、交通量调查、交通量预测等方面出发,提出了两个立交改造方案,并从技术、经济、社会、环境等方面进行了综合比选,最后推荐改造成一座"灯泡型"环形立交。基于非机动车与行人慢行系统的考虑,推荐修建一座"井字型"互通人行桥来解决非机动车与行人通过北桥头的安全隐患问题。

Due to the upgrading of the existing interchange design is more difficult than the construction of new projects because of a number of multiple factors. Based on interchange construction conditions of northern end of Youxizhou Bridge in Fuzhou and considering problems from the current situation,volume of traffic surveys and volume of traffic prediction,etc.,two interchange modification schemes are proposed. After comprehensive comparison in terms of technical,economic,social and environmental,etc.,the final scheme is transformation into a ＂ bulb-shaped＂ rotary interchange. Combined with existing problem from non-motor vehicles and pedestrians slow-traffic system,it is recommended to build a ＂ well-shaped＂ interchange footbridge to settle potential security problems for nonmotorized vehicles and pedestrians crossing the northern end of bridge