巨型钢桁架悬挑结构动力特性监测研究  

Study on Dynamic Characteristics Monitoring of Cantilever Structure of Giant Steel Truss

作　　者：侯敬峰 马世鹏 苏浩[2] HOU Jingfeng;MA Shipeng;SU Hao(Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material, Beijing 100044, China;Beijing Building Construction Research Institute Co. ,Ltd. , Beijing 100039, China)

机构地区：[1]工程结构与新材料北京市高等学校工程研究中心,北京100044 [2]北京市建筑工程研究院有限责任公司,北京100039

出　　处：《施工技术》2018年第8期38-40,49,共4页Construction Technology

基　　金：北京市教育委员会科技计划一般项目(SQKM201710016003)

摘　　要：针对某悬挑结构,选取其典型的东立面钢桁架,采用脉动法进行动力测试,获得自振频率和振型。运用MIDAS/Gen有限元分析软件进行模态分析,并将实测值与数值模拟值做对比。结果表明:实测值与数值模拟值吻合较好,工程符合结构设计要求。In view of a cantilever structure,the typical east facade steel truss was selected,the pulsation method was used for dynamic testing,the self vibration frequency and vibration mode were obtained. The modal analysis was carried out by MIDAS/Gen finite element analysis software,the measured values are compared with the numerical simulation values. The results show that the measured values are in good agreement with the numerical simulation values,and the engineering meets the requirements of the structural design.

关 键 词：钢结构 悬挑 桁架 动力特性 监测 分析 

分 类 号：TU391[建筑科学—结构工程]