凯威特球面巨型网格结构的动力特性及抗震分析  

DYNAMIC CHARACTERISTIC AND SEISMIC ANALYSIS OF KIEWITT SPHERICAL RETICULATED MEGA-STRUCTURE

作　　者：李峰[1] 李发山 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《钢结构》2015年第3期7-11,28,共6页Steel Construction

基　　金：陕西省教育厅基金(12JK0910);西安建筑科技大学科研基金(JC1002)

摘　　要：凯威特球面巨型网格结构的网格大小均匀,具有良好的受力性能,且刚度大、重量轻,适合于功能性较强的大跨度结构。利用ANSYS有限元分析软件对凯威特球面巨型网格结构进行动力特性分析,讨论矢跨比、跨度、支座约束等参数对自振特性的影响,应用时程分析法对其进行抗震计算,并对结构杆件的动、静内力值进行比较,为该结构的抗震性能研究以及工程应用提供理论基础。The kiewitt spherical reticulated mega-structure is divided into similar grids, so it has been received better mechanical properties. It is appropriated to super-long-span functional structure. This paper used the ANSYS finite element software to carry out the analysis of dynamic characteristics of the kiewitt spherical reticulated mega- structure. The influence of parameters such as rise to span ratio, span and support restraint constraints on dynamic characteristic were discussed. Seismic analysis was computed by time-history analysis method. The comparison of structure elements＇ dynamic stress and static stress, some practical conclusions are gotten. These results might provide a theoretical basis for the research of dynamic response on earthquakes and the engineering design of the kiewitt spherical reticulated mega-structure.

关 键 词：凯威特球面巨型网格 有限元分析 自振特性 参数分析 时程分析 

分 类 号：TU399[建筑科学—结构工程] TU311.3