悬索人行玻璃吊桥荷载试验与结构性能评估  

Load test and structural performance evaluation of suspended rope pedestrian glass suspension bridge

作　　者：何增平 HE Zengping(Fuzhou City Construction Engineering Quality Supervision Station,Fuzhou 350007)

机构地区：[1]福州市建设工程质量监督站

出　　处：《福建建筑》2019年第12期89-93,共5页Fujian Architecture & Construction

摘　　要：跟踪分析某跨度为133m悬索人行吊桥试验检测过程,检验该桥梁的施工质量,评估桥梁结构工作性能。首先,对桥梁的表观状况进行检查,测量主索的原始几何形状数据;其次,依据设计资料和现场表观检查结果进行有限元建模分析,静载工况设计,现场加载测试与分析;最后,对桥梁进行动力特性测试与分析。试验结果表明:该桥在静力试验荷载作用下结构竖向刚度满足规范要求,但结构基频远小于规范规定的人行桥不小于3Hz的要求,在人行、风荷载等外界动荷载作用下容易产生较大振动。The testing of a 133 m suspended cable pedestrian suspension bridge with a span was analyzed to verify the construction quality of the bridge and evaluate the working performance of the bridge structure.First,the apparent condition of the bridge should be checked and measured the original geometry of the main cable.Secondly,according to design data and field apparent inspection results,finite element modeling analysis,static load design,field load test and analysis were carried out;Finally,the dynamic characteristics of the bridge was tested and analyzed.The test results show that the vertical stiffness of the bridge under the static test load meets the requirements of the code,but the fundamental frequency of the structure is far less than the requirement of the footbridge stipulated by the code,which is no less than 3 Hz.

关 键 词：悬索人行吊桥 静、动载试验 结构性能 

分 类 号：TU745[建筑科学—建筑技术科学]