（1 大连市建筑设计研究院，大连 116021； 2 大连理工大学，大连 116021； 3 大连星海会展中心，大连 116021）
［摘要］原设计为展览功能的大跨度楼板改造为文艺演出场地后,楼板振动过大，无法满足舒适安全使用要求。通过对该部位楼板模拟演出激振实际检测，并进行有限元分析，得出楼板的振动频率和动荷放大系数，在舞台部位采用橡胶隔振器，大幅度降低楼板振动反应。经过演出现场测试，隔振效果明显，满足了安全和舒适使用要求。
［关键词］大跨度楼板振动；楼板振动测试；舞台隔振设计；动荷载放大系数
Experimental study on isolation design for the large-span floor of a multi-purpose hall of Dalian Xinghai Convention and Exhibition Center
Wang Lichang1，Wang Guolei1，Guo Xinglin2，Cai Xianhui2，Sun Zhentao3（1 Building Design and Research Institute of Dalian, Dalian 116021, China; 2 Dalian University of Technology, Dalian 116021, China; 3 Dalian Xinghai Convention and Exhibition Center, Dalian 116021, China）
Abstract:After the original design of large-pan floor for the use of exhibition changed to entertainment, the vibration of floor is too large and the demand of comfortable and safe use can not be satisfied. Through the actual check of simulated performance on the floor and  finite element analysis, the vibration frequency and amplificatory factor of dynamic loads are carried out. By using the rubber vibration isolator on the stage, the vibration response of the floor can be greatly reduced. Through the test of local performance, the effect of vibration isolation is obvious and the demand  can be satisfied.
Keywords:vibration of large-span floor; test of floor vibration; stage isolation design; amplification factor of dynamical loads
作者简介：王立长，教授级高工，一级注册结构工程师，Email:wang19490621@sina.com。
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