摘要
根据结构稳定理论导出了钢柱在热-力耦合作用下的振幅计算式,探讨了温度、柱阻尼、柱的尺寸效应、激振频率及纵向惯性力对钢柱动力性能的影响,提出了避免或减小钢柱振动的一些措施,为钢柱的动力分析与抗火设计提供了参考依据.
According to the structural stability theory, the amplitude calculation of steel columns under the action of heat-coupled forces is deduced. The influences of temperature, column damper, column size effect, excitation frequency and vertical inertial force on the dynamic properties of columns are explored. Some measures are put forward to avoid or reduce column vibration. These measures provide a referenee for the dynamic analysis of steel columns and fire resistance design.
基金
安徽省教育厅自然科学基金重大项目(ZD2007007-1)
中国科学技术大学火灾科学国家重点实验室开放课题(HZ2008-KF05)资助
关键词
热-力耦合
动力特性
阻尼
钢柱
振幅
纵向惯性力
heat-coupled force
dynamic characteristcs
damper
steel columns
amplitude
vertical inertial force
