多工况连续箱梁下行式移动模架施工技术  

Construction Technology of Downward Movable Scaffolding Systemfor Continuous Box Girder under Multiple Working Conditions

作　　者：祁磊 张艳丽 曹长兴 Qi Lei;Zhang Yanli;Cao Changxing

机构地区：[1]郑州新大方重工科技有限公司

出　　处：《工程机械》2023年第3期112-119,I0014,共9页Construction Machinery and Equipment

摘　　要：以广西滨海公路龙门大桥东引桥50 m预应力混凝土连续箱梁现浇施工为背景,介绍施工方案及下行式移动模架的组成。针对该线路跨度大,S形小半径曲线以及移动模架后退及反向施工、交叉过孔作业等多种复杂工况,对下行式移动模架在不同工况下的针对性设计及施工方法进行说明,总结创新设计及施工技术要点。In the context of the cast-in-situ construction of the 50 m prestressed concrete continuous box girder of the east approach bridge of Longmen Bridge on Guangxi Coastal Highway,the construction plan and the structure of the downward movable scaffolding system are introduced.In view of the large span of the line and the complex working conditions such as S-shaped small-radius curve,movable scaffolding systembackward and reverse construction and cross self-launching,the specific design and construction methods of the downward movable scaffolding system under different working conditions are described,and the key points of innovative design and construction technologyare summarized.

关 键 词：下行式移动模架 曲线施工 后退过孔 交叉过孔 

分 类 号：U445.463[建筑科学—桥梁与隧道工程]