2011年2月第40卷
第3期
施工技术
CONSTRUCTION TECHNOLOGY
青岛海湾大桥大沽河航道桥钢箱梁架设施工技术
李鹏杜清蔡堂
（中交第二公路工程局有限公司陕西西安
710065)
[摘要］青岛海湾大桥大沽河航道桥为独塔自锚式悬索结构，受航道通航要求限制，桥面设计高度达60m，钢箱梁施工若采用顶推或小节段吊装工艺对临时支撑结构要求高且工程量大，经多方案比选最终确定采用临时缴支架配合浮吊大节段安装施工工艺较为经济、可行采用此工艺涉及到两大核心技术即大节段钢箱梁吊装技术及大节段钢箱梁精确调位技术，以青岛海湾大桥大活河航道桥施工实例为依托详组介绍大节段钢箱梁安装施工工艺【关键词】青岛海湾大桥：钢箱梁：吊装；精确调位
[中图分类号］U445
[文献标识码］A
[文章编号】1002-8498(2011) 03-0005-03
ConstructionTechnologyonErectionofSteelBoxGirderin
Daguhe WaterwayBridgeinQingdao Bay Bridge
Li Peng , Du Qing, Cai Tang
( CCCC Second Highray Engineering Go. , Led. , Xi' an , Shaanxi710065 China)
Abstract: The Daguhe Waterway Bridge in Qingdao Bay Bridge is a self-anchor-type cable-stayed structure with single tower. Limited by channel navigation condition , the design height of bridge deck is 60 meters. If using pull-over hoisting technology or little segments hoisting technology during construction of steel box girder , some temporary support structure must be used in high level and the working quantity is large. So comparing some technology schemes , large segment hoisting technology with temporary pier support and floating crane is determined finally to be used , which is economic and workable. The two core techniques of this hoisting technology are the hoisting technique and accurate positioning technique of large segment steel box girder. The authors introduce in detail the hoisting technology of the large segment steel box girder in Daguhe Waterway Bridge in Qingdao Bay Bridge.
Key words: Qingdao Bay Bridge; steel box girder; hoisting; accurate positioning
工程概况
青岛海湾大桥大沽河航道桥为不对称独塔4跨
连续钢箱梁自铺式悬索桥全长610m跨径组合为 80m+190m+260m+80m。其箱梁为扁平流线形钢箱梁梁宽47.41m，共55段2.1万t，桥型布置如图1所示。标准梁节段采用分离式双箱断面2个封闭钢箱梁之间用横向连接箱连接，全宽47.41m，梁高3.6m；主缆在锚固区域加劲梁采用整体式箱梁因锚固面的构造要求在横向中间位置梁高加高
到8.0m。钢箱梁横断面如图2所示。[收稿日期]2010-1-10
[基金项目】中交二公局青岛海湾大桥自铺式悬素桥钢箱梁施工技
术研究课题
[作者简介］李
鹏中交第二公踏工程局有限公司高级工程师快
西省西安市丈八东踏262号
710065,电话:15853268519 ,E-mail:
yanfazhongxin888@ 163. com 万方数据
岛
190.000
301号领助联
过培
Fig-1
钢箱梁施工 2
302号主塔
立面 b平面
图1
260.000
303号驰助联
桥型布置
Style of Qingdao Bay Bridge
5 学
自锚式悬索桥的结构特点决定上部必须为先梁后索的施工顺序综合考虑大沽河航道桥桥型布置情况、钢箱梁结构特点、梁段组合及施工海域内吊装设备等因素钢箱梁施工采用大节段吊装施工工艺，将全桥钢箱梁划分为24个大节段其中分幅梁取