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桁架筒结构是高层建筑的一种高效的结构体系,该结构体系形式,自60年代末问世以来已广泛应用于大多数高层建筑中。提出基于刚度的设计方法,用以初步确定高层建筑桁架筒结构的构件尺寸。该方法适用于40～80层高的建筑物,并给出对应于代表性的设计荷载,使用材料最为经济的设计参数。就结构构件的不同几何配置对于设计经济性的影响进行了讨论,并对几何配置优化提出了建议。基于刚度的设计方法,只需较少迭代过程,非常适合于桁架筒结构的初步设计。对使用最少量的资源以满足构建建筑环境要求的设计,将具有推动和促进作用。
Truss tube structures are an efficient structural system for high-rise buildings that have been widely used in most high-rise buildings since their introduction in the late 1960s. A stiffness-based design method is proposed to initially determine the component dimensions of truss tube structures in high-rise buildings. The method is suitable for buildings of 40 to 80 storeys and gives the most economical design parameters corresponding to representative design loads and materials used. The influence of different geometrical configurations of structural members on design economy is discussed, and some suggestions on geometric configuration optimization are put forward. The stiffness-based design approach requires less iteration and is well suited for the initial design of truss tube structures. The use of minimal resources to meet the design requirements of the building environment will have a catalytic and promotional role.