摘要
以某高层建筑中实际的钢结构夹层为案例,介绍了该夹层的设计概况,采用简化的评估方法预测了夹层楼盖的基本频率和人致振动响应,施工完成后对其进行了实地动力测试,分别测得该结构的模态特性以及在人行荷载工况下的振动响应。实践表明:该种轻质夹层的设计符合振动舒适度的要求,采用的楼盖评估方法是实用的、偏于安全的;在考虑舒适度的楼盖人致振动评估中建议联合采用响应的峰值和连续均方根响应。
A steel-staggered-floor in a high-rise building was used as a case. Firstly, the fundamental frequency and vibration response under human-induced excitation of floor were estimated using simplified assessment method. Then, dynamic testing was conducted after construction was finished, the modal properties and vibration responses under four load cases were measured. Practice showed that design of this steel-staggered-floor could meet the requirements of vibration serviceability. The proposed assessment method of floor was safe and practical. Peak response and RMS response could be used together in the vibration serviceability assessment of floor structure.
出处
《工业建筑》
CSCD
北大核心
2016年第8期145-149,共5页
Industrial Construction
关键词
钢结构夹层
振动舒适度
动力测试
均方根加速度
steel-staggered-floor
vibration serviceability
dynamic test
RMS acceleration
