Experimental Study on the River Engineering Model of Shuangliu Bridge across Yangtze River in Wuhan

Abstract

Shuangliu Bridge across Yangtze River in Wuhan was the key control project of Xingang Expressway. It was the way to cross the river for the construction of Xingang Expressway. The bridge was located at the junction of the exit of Yejiazhou River Section and the entrance of Tuanfeng River Section. The upstream was 26.5 kilometers from Yangluo Expressway Bridge of Yangtze River, and the downstream was 21 kilometers from Huanggang Bridge of Yangtze River. Based on analysis of evolution of riverbed and the experiment of river engineering model, not only evolution rules of a river channel of the section at the bridge site after the application of the Three Gorges Reservoir were specially studied, but also the change rules before and after the construction of the bridge were also studied such as the damming at the upstream section of the bridge site, the current velocity and flow direction of the upper and lower reaches, the discharge of the single wide at the bridge site, and the distributary ratio of a branch channel of the lower reaches of the Tuanfeng River, etc. It showed the two bridge schemes had no great influence on river regime and flood control of engineering reach, and a double-tower cable-stayed bridge was better than a three-tower cable-stayed bridge. The results can be adopted or referenced to designing project.