下承式钢管混凝土系杆拱桥不同拱肋倾角动力性能分析  

Dynamic performance analysis of different arch rib inclination angles of concrete-filled steel tubular tied arch bridge

作　　者：杨国飞 陈玉骥[1] 陈舟 唐嘉佑 郭浩宇 YANG Guo-fei;CHEN Yu-ji;CHEN Zhou;TANG Jia-you;GUO Hao-yu(Department of Civil Engineering, Foshan University, Foshan 528000, China)

机构地区：[1]佛山科学技术学院交通与土木工程学院,广东佛山528000

出　　处：《佛山科学技术学院学报（自然科学版）》2019年第2期29-34,共6页Journal of Foshan University(Natural Science Edition)

基　　金：广东省自然科学基金资助项目(S2011010005037);2018年佛山科学技术学院研究生自由探索基金资助;2018年佛山科学技术学院学术基金资助

摘　　要：以某下承式钢管混凝土系杆拱桥为例,采用有限元软件MIDAS/Civil建立全桥空间模型,利用模态分析方法,分析钢管混凝土系杆拱桥不同拱肋倾角(外倾角、平行、内倾角)的自振频率及模态,得出了其变化规律,并且分析了不同倾角的拱肋加K横向支撑对其自振频率及模态的影响。Taking a bearing type steel tube concrete tied arch bridge as an example, the finite element software MIDAS/Civil is used to establish the full bridge space model, and the mode analysis method is used to analyze the natural frequency of vibration and mode of the angle of different arch ribs (obliquity, parallelism and obliquity) of the arch bridge of concrete filled steel tube, and the change law is obtained. The influence of the arch rib with K lateral brace at different inclination angles on its natural frequencies and modes is also analyzed.

关 键 词：不同拱肋倾角 横撑 自振频率 模态 

分 类 号：U448.225[建筑科学—桥梁与隧道工程]