多层大跨度蜂窝型钢网格盒式结构动力分析  

Dynamic features of large span cellular steel grid box structure

作　　者：宋赟[1] 马克俭[1] 才琪[1] 毕永辉[1] SONG Yun MA Kejian CAI Qi BI Yonghui(Space Structures Research Center, Guizhou University, Guiyang 550003, Chin)

机构地区：[1]贵州大学空间结构研究中心,贵州贵阳550003

出　　处：《贵州大学学报（自然科学版）》2017年第4期82-85,92,共5页Journal of Guizhou University:Natural Sciences

基　　金："十二五"国家科技支撑计划(2011BAJ09B01-01);贵州省科技创新人才团队建设([2014]4012);贵州大学研究生新基金资助(研理工2017062)

摘　　要：为研究多层大跨度蜂窝型钢网格盒式结构的动力特性,基于ANSYA有限元软件,计算结构各阶频率和振型;分析层高、楼板刚度和密柱刚度对盒式结构频率的影响。分析结果表明,盒式结构平面承载布置均匀合理,抗扭刚度大。低阶振型主要为结构平动和扭转,高阶振型主要为楼板的竖向振动。层高主要影响盒式结构低阶频率;楼板刚度主要影响高阶频率;密柱刚度既影响低阶频率也影响高阶频率,但对低阶频率的影响较大,分析结果可为工程设计提供参考。In order to study the dynamic features of large span cellular steel grid box structure,by using ANSYA finite element software,calculate the frequencies and modes of vibration of structure; Analysis the influence of floor slab height,floor stiffness and rigid column stiffness on the frequency of box structures. The analysis results show that,The plane structure of box type structure is uniformly and reasonably arranged,has high torsional rigidity. Low order vibration modes are mainly structural translation and torsion,the higher order vibration for vertical vibration of floor slab. Floor height mainly affects the low order frequency of box structure; The floor stiffness mainly affects the higher order frequencies,rigid column stiffness affects both the lower order frequency and the higher order frequency,but it has a great influence on the lower order frequency,The analysis results can provide reference for engineering design.

关 键 词：蜂窝型钢网格盒式结构 振动特性 固有频率 模态振型 

分 类 号：TU393.3[建筑科学—结构工程]