高層建筑鋼-混凝土混合結(jié)構(gòu)簡化分析模型
李國強(qiáng) 姜麗人 張曉光
- 摘 要
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李國強(qiáng) 姜麗人 (同濟(jì)大學(xué)土木工程學(xué)院 上海 200092)張曉光 (同濟(jì)大學(xué)建筑設(shè)計研究院 上海 200092)[提要] 通過一定的等效原則將由外部鋼框架、內(nèi)部混凝土核心筒組成的高層混合結(jié)構(gòu)簡化為以下結(jié)構(gòu):鋼框架簡化為半剛架,混凝土核心筒簡化為具有箱形截面形式的豎向懸臂桿,再考慮幾何非線性,用一列豎向受載桿與它們并聯(lián),從而得到簡化計算模型,可用于該類建筑結(jié)構(gòu)在水平荷載作用下的分析計算。
[關(guān)鍵詞] 鋼結(jié)構(gòu) 鋼筋混凝土結(jié)構(gòu) 混合結(jié)構(gòu) 簡化模型
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