平板网架子结构圆柱面交叉立体桁架系巨型网格结构的动力特性研究  

Research on Dynamic Characteristic of Cylindrical Latticed Intersected Three Dimensional Beam System Reticulated Mega-Structure with Double Layer Grid Sub-Structure

作　　者：贺拥军[1] 周绪红[2] 董石麟[3] 

机构地区：[1]湖南大学土木学院,长沙410082 [2]长安大学,西安710064 [3]浙江大学,杭州310027

出　　处：《建筑科学》2003年第5期10-15,共6页Building Science

摘　　要：主要研究了平板网架子结构圆柱面交叉立体桁架系巨型网格结构的动力特性,包括主体结构单独承载及其与子结构协同承载两种情况下的自振频谱规律、结构前面若干低阶振型特征等;就各方向首阶振型的出现次序及其对应周期值进行了主体结构矢跨比、长跨比、立体桁架梁高度、子结构高度、杆件截面、载荷等一系列参数分析,从而了解了不同参数变化对结构各方向刚度的影响。为该结构体系的抗震设计、参数选择提供了理论依据与指导。For the cylindrical latticed intersected three-dimension beam system(LITDBS) reticulated mega-structure with double layer grid sub-structures, the dynamic characteristics of the structure are analyzed in this paper. The basic eigen-vibration of the LITDBS reticulated mega-structure is studied under the condition that the load-bearing contribution of the sub-structure is included. A series of parameter analyses are carried out for the sequence of the first modes of different directions. The influence of the parameters on the structural stiffness of different direction has been obtained. All this work will provide guide in theory for the aseismatic design of this kind of structure.

关 键 词：平板网架子结构 圆柱 巨型网格结构 动力特性 载荷 抗震设计 

分 类 号：TU356[建筑科学—结构工程]