摘要
为研究单层索网幕墙结构固有振动特性,考虑温度变化及几何非线性影响,采用连续化理论导出了单层索网幕墙结构非线性振动方程。利用Galerkin方法及L-P法求出了单层索网幕墙结构固有振动的近似解,并讨论分析了温度的改变量、振幅、初始拉力对单层索网幕墙结构固有振动的影响。算例表明:随着温度的降低,振幅、初始拉力的增大,单层索网幕墙结构振动频率将变大。
In order to investigate the natural vibration characteristic of monolayer cable net facade,taking the temperature effect and geometric nonlinearity into consideration,the nonlinear vibration equation was derived by assuming the net as a continuum membra.And the approximate solution of natural vibration of monolayer cable net facade was given by use of the Galerkin method and L-P method.Then the effects of temperature,amplitude and initial tension on the nonlinear vibration were discussed.The computational results show that the temperature increment will make the vibration frequency of monolayer cable net fall,on the contrary,amplitude and initial tension increment will make the vibration frequency increase.
出处
《河南科技大学学报（自然科学版）》
CAS
北大核心
2010年第6期58-61,共4页
Journal of Henan University of Science And Technology:Natural Science
基金
国家创新基金支持项目(08C26224301132)
湖南省科技计划项目(2008FJ3067)
湖南"十一五"重点建设学科项目(湘教通[2006]180号)
湖南省普通高校青年骨干教师项目(湘教通[2007]256号)
关键词
单层索网
点支式玻璃幕墙
固有振动
温度变化
振动频率
Monolayer cable net
Point supported glass curtain wall
Natural vibration
Temperature variation
Vibration frequency
