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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 twisting coupling between the towers, the small podium tall podium twin towers exhibit complex structural characteristics. According to the self-vibration period calculated by the overall model, it is difficult to judge which tower it belongs to. In order to control the cycle ratio, multiple single tower models need to be established to check the cycle ratio. The single tower model should be divided so that the calculated displacement and internal forces are consistent with the overall model calculation results. Taking a practical project as an example, this paper presents a method of subdivision of a single-tower model with a small podium and a double pylon structure in a tall podium. The static and elastic analysis of the three models is carried out. The natural period, displacement ratio, Weight ratio and weight ratio, draw some useful conclusions, which can provide reference for the design of similar projects.