泰东河张郭大桥钢管混凝土系杆拱桥水上少支架浇筑支撑施工技术  

Construction Technology for Pouring and Supporting Steel Pipe Concrete Tie-Arch Bridge of Zhangguo Bridge over Taidong River with Less Support on Water

作　　者：商志清 宋力 沈琳 SHANG Zhiqing;SONG Li;SHEN Lin(Jiangsu Yancheng Water Conservancy Construction Co.,Ltd.,Yancheng 224014,China;Material and Structural Engineering Department of Jiangsu Hydraulic Research Institute,Yangzhou 225002,China;The Jiangsu General Factory of Water Conservancy Machinery,Yangzhou 225000,China)

机构地区：[1]江苏盐城水利建设有限公司,江苏盐城224014 [2]江苏省水利科学研究院材料结构研究所,江苏扬州225002 [3]江苏省水利机械制造有限公司,江苏扬州225000

出　　处：《中国水能及电气化》2023年第4期18-23,共6页China Water Power & Electrification

摘　　要：泰东河张郭大桥为钢管混凝土系杆拱桥,跨度大,要求不断航施工,工期紧、施工难度大。本工程首次在主跨采用以灌注桩为基础的水上少支架浇筑支撑体系施工技术,并提出了支架预压质量控制指标。结果表明:水上少支架浇筑支撑体系施工技术,较传统满堂脚手支架及悬篮施工工艺,具有对航道通航影响小、施工便捷、安全可靠、工期缩短、施工精度高、施工成本降低等优点,可为同类不断航航道大跨度桥梁施工提供借鉴。The Zhangguo Bridge over Taidong River is a steel pipe concrete tie-arch bridge with a large span that requires continuous navigation during construction.The project has a tight schedule and high construction difficulty.For the first time in the main span,this project applies a construction technology for pouring and supporting with less support on water based on cast-in-place piles,and quality control indicators for pre-loading of supports are proposed.The results show that compared with traditional full-scaffolding and hanging basket construction methods,the construction technology for pouring and supporting with less support on water has advantages such as minimal impact on waterway navigation,convenient construction,high safety and reliability,shortened construction period,high construction accuracy,and reduced construction cost.This technology can provide reference for the construction of similar continuously navigable long-span bridges.

关 键 词：系杆拱桥 少支架 支撑体系 施工技术 

分 类 号：U443[建筑科学—桥梁与隧道工程]