摘要
泉州湾跨海大桥主桥为国内首座跨海高速铁路双塔双索面钢-混结合梁斜拉桥,全长采用混凝土桥面板+槽形钢箱梁的结合梁结构。结合现场施工环境及设备资源对总体设计方案进行优化调整,将边跨77.9 m大节段吊装调整为对称悬臂拼装;将标准节段钢梁与桥面板先结合再吊装整节段调整为先吊装后结合,解决了吊机吊重问题;利用变幅吊机对桥面中板及部分超重拉索进行吊装;应用拉索导向装置解决了有限桥面宽度下拉索展索的施工困难。通过工艺优化调整,在保证施工质量、安全的同时有效缩短了斜拉桥施工工期,节约了施工成本,达到了预期结果。
The main bridge of Quanzhou Bay sea-crossing Bridge is the first steel concrete composite girder cablestayed bridge with double-tower and double-cable planes for sea-crossing high speed railway in China.The whole girder is a composite girder structure of concrete deck+channel steel box girder.According to the on-site construction environment and equipment resources,the overall design scheme was optimized and adjusted.The large section hoisting of side span 77.9 m was adjusted to the symmetrical cantilever assembly.The standard section steel girder and bridge deck were combined first and then the whole section was hoisted,which solves the weight problem of crane hoisting.The deck middle plate and some overweight cables were hoisted by using the luffing crane.The cable guide device was used to solve the construction difficulty of cable spreading under limited bridge deck width.Through process optimization and adjustment,the construction period of the cable-stayed bridge is shortened,the construction cost is saved,and the expected results are achieved while ensuring the construction quality and safety.
作者
叶德炳
翁方文
YE Debin;WENG Fangwen(Southeast Coastal Railway Fujian Co.Ltd.,Fuzhou 350013,China;CCC Second Harbor Engineering Co.Ltd.,Wuhan 430040,China)
出处
《铁道建筑》
北大核心
2022年第9期93-96,共4页
Railway Engineering
基金
中国铁路总公司科技研究开发计划(K2018G017)。
关键词
斜拉桥
跨海高速铁路
结合梁
变幅式桥面吊机
混凝土桥面预制板
悬臂施工
cable-stayed bridge
sea-crossing high speed railway
composite girder
luffing bridge deck crane
concrete deck precast slab
cantilever construction Citation
