澳门西湾大桥斜拉桥主梁安装施工  

Main girder installation of West Bay Cable-stayed Bridge in Macao

作　　者：连泽平[1] 黄旺明[1] 

机构地区：[1]中铁大桥局集团第四工程有限公司,南京210031

出　　处：《铁道建筑技术》2005年第3期23-25,共3页Railway Construction Technology

摘　　要：在澳门西湾大桥的斜拉桥上部结构安装施工中,主塔及下横梁的刚度不能满足主梁大悬臂施工的要求。介绍了实际施工中采用设置在承台上的临时钢管混凝土桩作为钢支墩来代替主梁支座的受力(以满足主梁悬拼施工),并在主塔的永久抗风支座垫石上安装了临时钢牛腿,在箱梁顶、底板上设置临时横向连接梁等措施,解决了T构大悬臂状态下的抗风问题。In upper structure installation of West Bay Cable-stayed Bridge, main tower and lower crossbar meeting no requirement of main girder overhanging arm in rigidity. In view of this, temporary concrete-filled steel tube pile is lodged on pier coping working as steel pier in place of main girder bearing to bear the forces (for main girder overhanging arm work), setting steel bracket on permanent weatherproof bearing pad, setting temporary tie beam lengthways on box girder head board and foot board for wind resistance with T-structure overhanging arm in existence.

关 键 词：安装施工 斜拉桥 主梁 大桥 澳门 钢管混凝土桩 上部结构 悬臂施工 悬拼施工 下横梁 钢牛腿 连接梁 大悬臂 主塔 设置 抗风 支座 座垫 箱梁 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] TU758.11[交通运输工程—道路与铁道工程]