大型异形体组合结构抗震性能  

Seismic behavior of lager special-shaped composite structure

作　　者：陈建强[1,2] 纪洪广[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]青岛理工大学土木工程学院,山东青岛266033

出　　处：《辽宁工程技术大学学报（自然科学版）》2017年第8期819-824,共6页Journal of Liaoning Technical University (Natural Science)

摘　　要：为研究由不同材料构成的大型异性体组合结构的抗震性能,采用通用有限元分析及设计软件MIDAS/Gen对底部为规则混凝土框架结构、上部为圆柱形闭合钢架结构的组合结构建立了分析模型,采用组阻尼考虑不同材料阻尼比的影响,对整体结构进行抗震反应谱分析,计算水平地震作用下结构的位移与受力情况.研究结果表明:不同的结构类型会使组合结构产生较大变形,应采取有效措施;不同材料组成的组合结构,应考虑组阻尼对结构的影响.In order to study the seismic behavior of lager special-shaped composite structure composed of different materials, analysis model is established by the finite element analysis and design software MIDAS/Gen. The bottom of the structure is regular concrete frame and the upper is closed cylindrical steer structure. In calculating the group damping ratio of the whole structure, influence of different material damping ratio is considered. Earthquake response spectrum analysis is carried out on the whole structure, and structural displacement and stress distribution is calculated under the action of horizontal seismic. The analysis result shows that different types of structures will make the composite structure producing large deformation, effective measures should be taken; effect of group damping should be considered in composite structures of different materials.

关 键 词：混凝土框架-钢结构组合结构 异形体 抗震性能 MIDAS/GEN 反应谱分析 组阻尼 

分 类 号：TU398[建筑科学—结构工程] TU352.1