8
施工技术
CONSTRUCTION TECHNOLOGY
青岛海湾大桥大沽河航道桥钢箱头
梁
吊装设备研究程建新，季辉，杜清
2011年2月第40卷第3期
900[摘要］青岛海湾大桥大沽河航道桥为独塔自锚式悬索结构，钢箱梁架设采用大节段吊装施工工艺将全桥55个小块段2.1万t钢箱梁组合成24个大节段吊装受锚固区整幅梁段限制还受到浮吊吊装能力、吊高、吊幅及钢箱梁吊耳设计要求等各种因素限制对吊具要求较高结合该桥梁段种类多、质量大、分幅梁段偏心严重、整幅梁段宽度宽等特点，提出梁索结合式吊具结构通过调整扁担梁的位置使吊具适应不同类型梁段的吊装要求。对青岛
海湾大桥钢箱梁吊具结构进行详细介绍，[关键词】青岛海湾大桥：钢箱梁：吊装设备
[中图分类号】U445
[文献标识码】A
[文章编号1002-8498(2011) 03-0008-03
Research on Hoisting Equipment of SteelBoxGirder in
Daguhe Waterway Bridge in Qingdao Bay Bridge
Cheng Jianxin', Ji Hui,Du Qing
( 1. CCCC Second Highway Engineering Co. , Lrd. , Xi' an , Shaanxi710065 China; 2. Shandong Hi-Speed Qingdao Expressmay Co. Lrd. , Qingdao , Shandong 266061 China)
Abstract: The Daguhe Waterway Bridge in Qingdao Bay Bridge is a self-anchor-type cable-stayed structure with single tower. The steel box girder is constructed by hoisting construction with large segment , which combines 55-ittle segment of girder with 21 kiloton-weight into 24-arge segment of girder. Limited by whole girder in anchor zone and hoisting capacity , hoisting height , and hoisting arm length of floating crane , hoisting equipment is required of very high performances during box girder construction. So combing with girder' s characteristics of more kinds , large mass , large eccentricity of dividing girder and very wide of whole girder , the authors put forward hoisting equipment which combines girder and cable into unit. By adjusting the location of carrying pole , the hoisting equipment can satisfy requirement of different kind of girder segment. The authors introduce in detail the hoisting structure of
the large segment steel box girder in Daguhe Waterway Bridge in Qingdao Bay Bridge. Key words: Qingdao Bay Bridge; steel box girder; hoisting equipment
1工程概况
青岛海湾大桥大沽河航道桥采用不对称独塔 4跨连续钢箱梁自锚式悬索桥全长610m。钢箱梁采用扁平流线形结构标准梁节段长12m采用分离式双箱断面结构，全宽47.41m，梁高3.6m；主缆在横向中间位置梁高加高到8.0m。结合结构特点钢箱梁采用临时墩支架配合浮吊大节段吊装施工工
[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索桥钢箱桑施工技术研究课题
[作者简介】程建新中交第二公踏工程局有限公司高级工程师陕西省西安市文八东踏262号710065，电话：15853268503,E-mail:
chengjx2000@ sina. com 万方数据
艺，吊装由塔区梁段开始依次吊装完青岛侧梁段而后吊装黄岛侧梁段不设置合龙段
2钢箱梁吊装设备研究 2.1
大块梁段划分
根据钢箱梁结构特点、梁段组合情况及浮吊起吊性能等因素将主桥钢箱梁划分为24个大节段，其中分幅梁段16块梁段长28.2~72m整幅梁段8
块梁段长8.9~21m，最大起吊质量1020t。 2.2浮吊性能参数及吊点布置
从起吊高度、起吊质量和起吊幅度来看国内能够满足本工程吊装要求的现有浮吊仅“奋进号”，其主要性能参数如下：(1)主尺寸：总长×型宽×型深