非对称混合梁斜拉桥单向坡龙口跨中合龙关键技术  

Key technology of middle closure of unsymmetrical mixed beam cable-stayed bridge with single slope

作　　者：张文龙 ZHANG Wen-long(CCCC SHEC Fourth Engineering Co.,Ltd.,Wuhu,Anhui 241000,China)

机构地区：[1]中交二航局第四工程有限公司,安徽芜湖241000

出　　处：《中国港湾建设》2021年第3期26-30,共5页China Harbour Engineering

摘　　要：国内某半漂浮非对称混合梁跨海斜拉桥工程,跨中合龙梁位于单线坡区段,采用单吊机起吊合龙段。通过方案比较,选择最优的配切合龙方案。通过对合龙状态的观测,结合计算软件的敏感性分析,制定详细的技术参数和施工组织,完成合龙段吊装及高精度合龙,对类似工程提供借鉴。In a domestic semi floating asymmetric hybrid girder cross-sea cable-stayed bridge project,middle closure beam is located in the single slope sections,and a crane is used to lifting closure segments.Through scheme comparison,the optimal matching and cutting closure scheme was selected.Through observation of closure state,combined with the sensitivity analysis of calculation software,the detailed technical parameters and construction organization were formulated to complete the hoisting of closure segments and high accuracy closure,which can provide reference for similar projects.

关 键 词：单向坡 敏感性 施工组织 合龙 

分 类 号：U445.46[建筑科学—桥梁与隧道工程]