杭州湾跨海大桥南航道桥主塔施工关键技术

作者：李维洲 文兆全

单位：中交二航局杭州湾大桥项目部

关键词：斜拉桥  主塔  阴极防护  液压爬模  钢锚箱  施工工艺

分类号：U445.4

出版年,卷(期):页码：2008,32(4):50-55

摘要：

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,对大跨度独塔斜拉桥主塔施工中的液压爬模、下横梁和钢锚箱的施工工艺作了较详细地阐述,并对主塔施工设备的选取、外加电流阴极防护技术、环向预应力等作了叙述,对在海上进行斜拉桥主塔的施工提供了可借鉴的技术方法。

The paper describes the construction of the main pylon of Hangzhou Bay Sea-Crossing Bridge's south navigable bridge,which is a single pylon cable stayed bridge and has a 318 m main span.It expounds the technology of hydraulic climbing formwork and the construction technology of the lower beams and steel anchorage housing during the process of constructing cable-stayed bridge's pylon.It also introduces the choice of equipments while constructing the pylon,impressed current cathodic protection techniques,construction technology of annular prestressed force and so on,providing techniques and methods,which may be of reference for constructing pylons of cable-stayed bridge at sea.

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