武汉市姑嫂树立交3条“断头”匝道的补齐设计

Design of Supplementing Three"Broken End"Ramps for Gusaoshu Interchange in Wuhan

在武汉市姑嫂树立交现状分析基础上,从设计标准、相交道路情况介绍等方面进行论述,对姑嫂树立交的3条“断头”匝道进行平纵横设计,完善立交转向功能,发挥姑嫂树立交作为武汉市连接三环、天河机场和汉口的重要节点功能。其中的集散车道沿张公堤堤顶路建设,是迄今为止新建的一条长度最长、同时具备100 a一遇防洪功能和交通集散功能合一的匝道,建成的姑嫂树地面人字形交通闸是既有张公堤上采用人工辅以手动葫芦驱动启闭形式的规模最大的桥闸合一交通闸。

On the basis of analyzing the present situation of Gusaoshu Interchange in Wuhan,the design standards,the intersected road conditions and other aspects are introduced and discussed.Three"broken end"ramps of Gusaoshu Interchange are designed horizontally and vertically.The turning functions of the interchange are perfected.The important node role of Gusaoshu Interchange is put to good use for Wuhan City to connect Ring III,Tianhe Airport and Hankou,in which the collection and distribution lane constructed along the road at the top of Zhanggong Dyke is the longest lane newly built up to now,and simultaneously has a ramp integrated with the once-in-a-century flood control function and traffic collection-distribution function.The ground herringbone traffic gate of Gusaoshu Interchange is the largest scale of bridge closing traffic gate started and stopped by the manpower and hand-drive hoist used on the existing Zhanggong Dyke.