小底盘高裙房双塔超高层结构单塔模型选择方法  

Single tower model selection of super high-rise twin-tower structure with small-chassis and high-podium

作　　者：陈瑛[1] 刘鹏飞 孙洪波 张晓静 李霞 

机构地区：[1]山东大学土木系,济南250061 [2]山东恒信建筑设计有限公司,济南250100

出　　处：《建筑结构》2013年第11期68-70,87,共4页Building Structure

基　　金：山东省优秀中青年科学家科研奖励基金(2008BS04017);国家自然科学基金(50779032)

摘　　要：由于各塔楼之间的扭转耦联,小底盘高裙房双塔楼结构表现出复杂的结构特性。根据整体模型计算的自振周期,很难判断具体属于哪个塔楼。为控制周期比,需要建立多个单塔模型来验算周期比,单塔模型的剖分应使其计算的位移、内力与整体模型计算结果尽量一致。以某实际工程为例,提出了小底盘高裙房双塔结构单塔模型的剖分方法,对3个计算模型进行结构静力弹性分析,比较了各模型的自振周期、位移比、剪重比和刚重比,得出一些有益的结论,可为类似工程的设计提供借鉴。Due to the torsion coupling between towers,the twin-tower structure with small-chassis and high-podium exhibits the complex structural characteristics.The period belongs to which tower can not be evaluated by the overall calculations.The multiple single tower models should be set up to control the period ratio.The results of calculation such as displacement and internal force should be uniform between single tower model and overall model.The separating method for obtaining single tower model was investigated by a practical project,The results of static elastic analysis of three different models,such as the period,the displacement ratio,the shear-weight ratio,and the rigidity-gravity ratio,were compared.The conclusion is expected to provide a useful reference for the analysis and design of similar high-rise building structures.

关 键 词：超高层结构 小底盘高裙房双塔 单塔模型 模型剖分 周期比 

分 类 号：TU398.7[建筑科学—结构工程]