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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。
Taking the actual steel structure interlayer in a high-rise building as an example, the design overview of the interlayer is introduced, and the basic frequency and the human induced vibration response of the sandwich floor are predicted by a simplified evaluation method. After construction, the dynamic test , The modal characteristics of the structure and the vibration response of the structure under the load of pedestrian were measured respectively. The practice shows that the design of this kind of lightweight interlayer accords with the requirement of vibration comfort, and the method of floor assessment adopted is practical and biased. In the assessment of human induced vibration of floor considering the comfort, it is suggested to jointly adopt the peak value of response And continuous rms response.