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将超高层建筑空间巨型框架的巨型柱和梁分别简化成剪切型弹性地基梁和广义Winkler弹性地基梁单元,导出其单元刚度矩阵后,再按空间刚架分析计算,得到一种简化分析方法。简化巨型框架柱时,考虑与其相连的二级框架梁、柱的弯曲刚度,并将其作为巨型柱的剪切型弹性地基,构造出剪切型巨型弹性地基梁单元;简化巨型框架梁时,只考虑与其相连的二级框架柱的轴向刚度,并将其作为巨型梁的Winkler弹性地基,构造出广义Winkler巨型弹性地基梁单元。算例表明:简化计算的模型不仅是合理的、有效的,而且其计算结果的精度几乎与精确解有同级的精度。
The giant columns and beams of mega-frame of super high-rise building space are simplified into shear-type elastic foundation beams and beam elements of generalized Winkler elastic foundation respectively. After deriving the stiffness matrix of the element, the simplified analysis method . Considering the bending stiffness of the secondary frame beams and columns connected with the mega-frame columns, the shear-type giant elastic foundation beam elements are constructed when the mega-frame columns are simplified. When the mega-frame beams are simplified, Considering only the axial rigidity of the secondary frame column connected with it, the Winkler elastic foundation of Giant Beam is used to construct the generalized Winkler giant elastic foundation beam element. The example shows that the model of simplified calculation is not only reasonable and effective, but also the accuracy of the calculation results is almost the same level as the exact solution.