高层建筑钢-混凝土混合结构简化分析模型
- 摘 要
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李国强 姜丽人 (同济大学土木工程学院 上海 200092)张晓光 (同济大学建筑设计研究院 上海 200092)[提要] 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,混凝土核心筒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。
[关键词] 钢结构 钢筋混凝土结构 混合结构 简化模型
This article presents a simplified model for analysis of the steel and concrete mixed construction of high-rise buildings. ln this model, the steel frame is simplified to be a one-column rigid frame and the reinforced 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.
Keywords: steel and concrete mixed construction; simplified model; core tube; high-rise building