摘要
大跨度长悬挑结构因人员活动或机器运行引起的振动相比普通结构更加强烈。大型公建中经常出现大跨度长悬挑结构,如何保证这种强烈振动不影响楼板的正常使用功能,需要对楼板的竖向振动舒适度进行分析。本文以某大型公建中的大跨度长悬挑楼盖为例,运用MIDAS Gen软件进行楼板舒适度分析验算,通过确定楼板振动的不利区域,在不利点分别输入不同频率的人走时程荷载,求出加速度的最大响应。
Large span long cantilever structure is more intense than ordinary structure due to personnel activity or machine operation. Large span long cantilever structure often appears in large public construction. How to ensure that the strong vibration does not affect the normal function of the floor board,it is necessary to analyze the vertical vibration comfort of the floor slab. In this paper,the long span long cantilever floor in a large public building is taken as an example to analyze the floor comfort by using Midas Gen software. The adverse area of floor vibration is determined,and people’s travel time load at different frequencies is input at the disadvantage point,and the maximum response of acceleration is obtained.
出处
《建筑结构》
CSCD
北大核心
2018年第S1期410-413,共4页
Building Structure
关键词
自振频率
峰值加速度
时程分析
natural frequencies
peak acceleration
timing analysis
