摘要
基于考虑人体动力特性的新型双足模型,采用Lagrange方程建立了步行过程中人与结构相互作用系统运动方程。研究了人与结构各自的动力响应及其之间相互作用,并通过对比说明了新型双足模型反映的人体动力特性对结构振动的影响。结果表明:人与结构相互作用增大结构动力响应;行人经过结构各阶模态振型波峰时,结构各阶模态频率和阻尼比分别达到最小值和最大值。
Based on a new bipedal model considering human dynamic characteristics,dynamic equations of humanstructure interaction were established by means of Lagrange equation. Dynamic responses and interactions of human and structure were studied. The effects of human dynamic characteristics on structure vibration were also analyzed. The results showed that the human-structure interaction enhances structure vibration level the modal frequencies and damping radios of structure reach the minimum and the maximum,respectively when human walking passes the peak of each structural modal shape.
出处
《振动与冲击》
EI
CSCD
北大核心
2016年第7期31-38,共8页
Journal of Vibration and Shock
基金
国家自然科学基金资助项目(51422801
50938008
51278049)
新世纪优秀人才奖励计划(NCET-11-0571)
中央高校基本科研业务费专项资金资助(2012JBM007
2012YJS078)
关键词
振动
双足模型
人与结构相互作用
动力特性
vibration
bipedal model
human-structure interaction
dynamic characteristics
