摘要
通过大型有限元分析软件ANSYS对跨度60m的局部双层球面网壳结构进行研究和减震分析。研究局部双层球面网壳的自振特性以及约束屈曲支撑对局部双层球面网壳减震效果的主要影响参数和影响规律。通过考虑约束屈曲支撑不同的设置位置和数量,进行相关的减震参数分析。结果表明,局部双层球面网壳自振频率密集;约束屈曲支撑杆件的布置位置对减震效果有较大的影响;约束屈曲支撑设置的数量应综合考虑。
Through large finite element analysis software-ANSYS a 60m spanned partial double-layer spherical reticulated shell is researched and analyzed for vibration reduction.The self-vibration characteristics and the main influencing parameters and patterns of bending-restrictive buckling support（BRBS） were investigated for the effect of vibration reduction of the partial double-layer spherical reticulated shell.Correlative analysis of vibration reduction parameters was conducted by changing the setting manner,position,and number of the BRBS of the shell.The results show that self-vibration frequency of the partial double-layer reticulated spherical shell is intensive,the position of substituting rods would have greater influence on the vibration reduction effect,the setting number of BRBS should be considered comprehensively.
出处
《建筑科学》
北大核心
2011年第11期1-5,共5页
Building Science
基金
国家自然科学基金项目(51068019)
甘肃省建设科技攻关项目(JK2008-17)
关键词
局部双层球面网壳
约束屈曲支撑
分析
减震
partial double-layer spherical reticulated shell
bending-restrictive buckling support
analysis
vibration reduction
