(110+230+110)m预应力混凝土连续刚构柔性拱吊装技术  

Hoisting Construction Technology of(110+230+110)m Prestressed Concrete Continuous Rigid Frame Flexible Arch Composite System

作　　者：普银波 PU Yinbo(China Railway 11^(th) Bureau Group First Engineering Co.Ltd.,Xiangyang Hubei 441100,China)

机构地区：[1]中铁十一局集团第一工程有限公司,湖北襄阳441100

出　　处：《铁道建筑技术》2021年第S01期113-116,161,共5页Railway Construction Technology

基　　金：中铁十一局集团有限公司创新项目(18-AⅡ-02)。

摘　　要：新建广州一南沙港铁路跨小榄水道主桥为(110+230+110)m预应力混凝土连续刚构一柔性拱组合体系,钢管拱肋安装,边跨采用小节段汽车吊吊装,中跨采用大节段浮吊吊装的方案进行。以此为背景,介绍了跨航道大跨度特殊条件下的钢管拱桥安装总体思路及施工工艺,并着重对钢管拱的吊装过程、节段拼装等关键技术进行了介绍,通过有限元分析软件计算分析,论证了吊装方案的合理性和安全性,以期为类似工程提供部分可借鉴经验。The new main bridge of Nansha Port Railway in Guangzhou crossing Xiaolan waterway is a(110+230+110)m prestressed concrete continuous rigid frame flexible arch composite system,with steel pipe arch rib installation,small section truck crane hoisting for side span and large section floating crane hoisting for middle span.Based on this background,this paper introduces the general idea and construction technology of steel pipe arch bridge installation under the special condition of large span across channel,and focuses on the hoisting process,segment assembly and other key technologies of steel pipe arch bridge.Through the calculation and analysis of finite element analysis software,it demonstrates the rationality and safety of hoisting scheme,so as to provide some reference for similar projects.

关 键 词：混凝土连续刚构柔性拱桥 吊装过程 有限元分析 关键技术 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]