摘要
以中车科技文化展示中心为工程背景,对大跨度钢管桁架组合楼盖开展了人致振动舒适度研究。采用SAP 2000对楼盖进行模态分析和各种不利工况作用下的动力响应分析,重点研究行走、跑步、跳跃、起立等激励下楼盖的动力时程响应,得到相应的竖向振动峰值加速度,并与选取的舒适度评价标准对比。研究表明:该楼盖结构的人致振动舒适度满足设计要求;在跳跃、跑步等有节奏运动激励下,楼盖的振动响应较大;激励荷载的高阶谐波分量能引起楼盖的共振;分析人致振动舒适度应考虑建筑功能划分。
In the engineering background of CRRC and technology culture center,a research of vibration serviceability due to human activity was carried out on the long-span steel tube truss composite floor.Modal analysis was carried out on the floor by using the SAP 2000,as well as dynamic response analysis under the action of all kinds of adverse working conditions.The paper focused on the dynamic time history response of the floor under excitation forces such as walking,running,jumping and standing up,to get the corresponding vertical vibration peak acceleration,and compared with the selected standard.The results indicated that human comfortableness under human-induced excitation of the floor could meet the requirement of design;with rhythmic motion,such as jumping and running,the vibration response of the floor was larger;high order harmonic components of excitation forces could cause the resonance of floor;building functional division should be considered in the analysis of vibration serviceability.
作者
舒兴平
潘浙南
卢倍嵘
刘泽龙
SHU Xingping PAN Zhenan LU Beirong LIU Zelong(Steel Structural Institute of Civil Engineering College, Hunan University, Changsha 410082, China Hunan University of Science and Technology, Xiangtan 411201, China)
出处
《钢结构》
北大核心
2017年第9期62-67,51,共7页
Steel Construction
基金
国家自然科学基金项目(51278178)
关键词
振动舒适度
动力时程响应
激振力
峰值加速度
human comfortableness
dynamic time history response
excitation forces
peak acceleration
