二阶效应的压弯构件振动分析  

Second-order vibration analysis of beam-columns

作　　者：胡强[1] 房长宇[1] 

机构地区：[1]广西工学院建筑工程系,广西柳州545006

出　　处：《广西工学院学报》2006年第3期41-44,共4页Journal of Guangxi University of Technology

摘　　要：采用结构振动理论和二阶理论对压弯构件的振动进行了分析,求解构件的二阶自振频率和主振型,并对均匀简谐荷载作用下压弯构件的强迫振动进行了讨论。结果表明,二阶效应将对构件的位移和内力产生极为不利的影响。Theories of structural vibration and second-order analysis are applied to vibration analysis of beamcolumns. Second-order natural vibration frequencies and dominant modes of vibration are obtained. In addition, forced vibration of beam-columns under uniformly simple harmonic oscillation has been studied. The results show that second-order effect has a hazardous influence on members in displacements and inner forces.

关 键 词：压弯构件 振动 二阶效应 二阶自振频率 主振型 

分 类 号：TU311.3[建筑科学—结构工程]