杭州湾跨海大桥南航道桥主塔施工关键技术

Main construction technique of south navigable bridge's main pylon of Hangzhou Bay Sea-crossing Bridge

介绍杭州湾跨海大桥南航道桥(主跨318 m单塔斜拉桥)主塔的施工,总结大跨度独塔钢箱梁斜拉桥主塔及合龙段的施工技术,重点介绍外加电流阴极防护技术、液压爬模技术以及钢锚箱安装施工技术。

This paper describes the construction of the main pylon of the south channel bridge with a main span of 318m of Hangzhou Bay Sea-Crossing Bridge, closure section of steel box girder cable-stayed bridges with a summarizes the technology of main pylon and its large span , a single pylon and double planes. The inpressed current cathodic protection technique, construction technology of hydraulic climbing formwork, and construction technology of steel anchor housing are especially introduced.