钢管混凝土组合桥塔设计研究  

Research on Design of Concrete-Filled Steel Tubular Composite Bridge Tower

作　　者：吴巨军 WU Ju-jun(Hangzhou Urban Construction Design&Research Institute Co.,Ltd.,Hangzhou 311400,China)

机构地区：[1]杭州市城建设计研究院有限公司,浙江杭州311400

出　　处：《中国市政工程》2021年第2期76-79,127,共5页China Municipal Engineering

摘　　要：以金寨县长征大桥的设计、施工为基础,提出钢管混凝土组合结构桥塔可以参照JTG/T D65-06—2015《公路钢管混凝土拱桥设计规范》进行设计计算。针对桥塔构造、受力特点,提出钢管内壁增加PBL纵向、环向加劲肋,增设内置钢筋笼,以及钢管内部填充高性能混凝土等3项措施。对结构体系进行静力和动力分析,结果表明:采用钢管混凝土组合结构桥塔的斜拉桥具有良好的力学响应,结构强度、刚度、应力、整体稳定性和动力响应均满足规范要求。Based on the design&construction of the Changzheng Bridge in Jinzhai County,it is proposed that the concrete-filled steel tube composite structure bridge tower can be designed&calculated with reference to JTG/T D65-06—2015 Code for Design of Highway Concrete-Filled Steel Tube Arch Bridges.In view of the structure&force characteristics of the bridge tower,three measures are proposed:adding PBL longitudinal&circumferential stiffeners to the inner wall of the steel tube,adding built-in steel cages,and filling the steel tube with high-performance concrete.The static&dynamic analysis of the structural system shows that the cable-stayed bridge adopting the concrete-filled steel tube composite structure pylon has a good mechanical response,and the structural strength,stiffness,stress,overall stability and dynamic response all meet the requirements of the specification.

关 键 词：钢管混凝土桥塔 组合结构 斜塔斜拉桥 高性能混凝土 PBL加劲肋 

分 类 号：U443.38[建筑科学—桥梁与隧道工程]