复杂双塔连体高层结构动力特性与弹性时程分析  

Dynamic characteristics and elastic time-history analysis of complicated two-tower connection high-rise building structure

作　　者：胡长明[1] 董攀[2] 曾凡奎[3] 张西宁 

机构地区：[1]西安建筑科技大学,陕西西安710055 [2]广东省建筑科学研究院,广东广州510500 [3]青岛农业大学,山东青岛266109 [4]陕西法门寺文化景区建设有限公司,陕西宝鸡722201

出　　处：《土木工程学报》2010年第S1期86-91,共6页China Civil Engineering Journal

基　　金：国家自然科学基金(50978219);陕西省重点学科建设专项基金(E01004)

摘　　要：法门寺合十舍利塔高147m,外形呈双手合十造型,为复杂双塔连体超限的钢与混凝土混合结构。应用大型通用有限元软件,建立与实际情况相符的结构模型,对该结构进行动力特性分析。针对结构的复杂性,利用时程分析法对结构进行弹性分析。考虑这些影响因素,系统分析地震波输入维数、地震波类型及阻尼比对该结构时程分析的影响。根据分析结果提出对合十舍利塔等复杂结构进行抗震分析时,应考虑三维地震波输入。分析表明,该结构在7度多遇烈度地震作用下,有较小的位移,能够满足我国现行抗震规范的抗震设计标准。从整体上对结构的抗震性能做出评估,并得出具体的结论。The heshi dagoba in Famen temple,147m high,the exterior of the dagoba likes two palms together,and the building is a kind of connected twin-tower withcomplex high-rising steel-concrete hybrid structure.Structure model similar to practice was established using commercial finite element software.The dynamic characteristics of the structure were analyzed.For the complexity of the structure,using time-history analysis to analyze the elasticity of the structure.The result of time-history analysis may be influenced by several parameters,so the influence of earthquake wave dimension,the style and damping ratio were analyzed.The analysis results provide some suggestions: For the seismic analysis,three-dimensional seismic wave inputted should be considered.Under 7 degree seismic fortification intensity,displacement of the structure is smaller,which meet the seismic design standards of Chinese current building code.Some specific conclusions are gained from the overall seismic performance of the structure.

关 键 词：合十舍利塔 复杂高层 动力特性 时程分析 抗震性能 

分 类 号：TU973.2[建筑科学—结构工程]