Dynamic characteristics of the coupled system of footbridge and human  

作　　者：牛少华 高世桥 王栋 KASPERSKI M AGU E 

机构地区：[1]State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology [2]Research Team EKIB,Department of Civil and Environmental Engineering SciencesRuhr-University Bochum

出　　处：《Journal of Beijing Institute of Technology》2013年第3期285-290,共6页北京理工大学学报（英文版）

基　　金：Supported by the International S&T Cooperation Program of China(2010DFB74280)

摘　　要：The influence of human body on dynamic characteristics of footbridge was analyzed. A re- alistic footbridge was measured during a mass event. A simulation experiment system including a simple beam as object and a shaker as back ground excitation was built. The acceleration responses of beam were measured when person in static and active stated stood on the beam. The dynamic pa- rameters of the structure were identified by the time-domain approach and verified by theoretical and laboratory tests. The results showed that for the human-structure coupled system, nature frequency of the structure decreased and damping increased. Moreover, the increase of damping with passive person was bigger than that with active person.The influence of human body on dynamic characteristics of footbridge was analyzed. A re- alistic footbridge was measured during a mass event. A simulation experiment system including a simple beam as object and a shaker as back ground excitation was built. The acceleration responses of beam were measured when person in static and active stated stood on the beam. The dynamic pa- rameters of the structure were identified by the time-domain approach and verified by theoretical and laboratory tests. The results showed that for the human-structure coupled system, nature frequency of the structure decreased and damping increased. Moreover, the increase of damping with passive person was bigger than that with active person.

关 键 词：human-induced loads dynamic parameters human-structure interaction coupled sys-tem linear-sweep 

分 类 号：U441[建筑科学—桥梁与隧道工程]