高层建筑钢-混凝土混合结构简化分析模型

A Simplified Model for Analysis of Steel-concrete Mixed Structures in High-rise Buildings

通过一定的等效原则将由外部钢框架、内部混凝土核心筒组成的高层混合结构简化为以下结构：钢框架简化为半刚架，混凝土核心简简化为具有箱形截面形式的竖向悬臂杆，再考虑几何非线性，用一列竖向受载杆与它们并联，从而得到简化计算模型，可用于该类建筑结构在水平荷载作用下的分析计算。

This article presents a simplified model for analysis of the steel and concrete mixed construction Of high-rise buildings. In this model, the steel frame is simplified to be a one-column rigid frame and the rein-forced concrete core tube is simplified to be a vertical cantilever member with a solid box section. Because Of the simplicity, the propose model can be conveniently used for preliminary design of steel and concrete mixed structures for high-rise buildings with consideration of geometrical nonlinearity.