嘉绍高速公路跨钱塘江大桥桥址比选和通航孔设置研究

Option seeking for bridge site of Jia-Shao Expressway crossing Qiantang River and study on navigation opening location

采用河床演变的方法对3个桥址断面的主槽稳定性和冲淤变化进行了分析比较,优选出较佳的桥址断面,并预测了实施规划线后主槽的变化,确定了主通航孔的设置位置。

The stability and silting variation of main channel in three sections of bridge site are analysed and compared in the way of river bed evolution. The optimal section of bridge site has been selected. The paper also predicts the variation of main channel after carrying out planning line and determines the location of main navigation opening.