非对称环形人行天桥设计关键技术分析  

Analysis of Key Technologies in the Design of Asymmetric Circular Pedestrian Bridge

作　　者：包杰 郭夏 Bao Jie;Guo Xia(Central&Southern China Municipal Engineering Design and Research Institute Co.,Ltd.,Wuhan 430010,China)

机构地区：[1]中国市政工程中南设计研究总院有限公司,武汉市430010

出　　处：《北方交通》2023年第4期11-14,18,共5页Northern Communications

摘　　要：大型环形钢结构人行天桥在城市大型交叉路口的运用越来越多,其在运营过程中出现的病害对结构耐久性甚至安全使用均造成影响。为了解决此类问题,以某环形钢结构人行天桥为依托工程,借助MIDAS Civil有限元软件对闭合环形结构人行天桥设计关键因素进行了分析,得出的结论和建议可供类似工程的设计计算参考借鉴。Large-scale circular steel structure pedestrian bridges are more and more used at large urban intersections,and diseases appear in the operation process,which will affect the durability of the structure and even the safe use.In order to solve these problems,the key factors of the design of the pedestrian bridge with closed circular structure are analyzed with the help of MIDAS Civil finite element software,and the conclusions and suggestions can be used for reference in the design and calculation of similar projects.

关 键 词：非对称环形钢结构人行天桥 温度效应 自振频率 支座脱空 

分 类 号：U448.11[建筑科学—桥梁与隧道工程]