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(同濟(jì)大學(xué)建筑工程系  上海 200092)
【提要】  研究了鋼筋混凝土框架結(jié)構(gòu)層水平承載力和層抗側(cè)移剛度的關(guān)系。分析表明，層抗側(cè)移剛度、柱配筋量、豎向荷載對柱子極限彎矩的影響以及鋼筋屈服強(qiáng)度是影響層水平承載力的主要因素?？紤]這幾個(gè)主要影響因素，采用統(tǒng)計(jì)分析的方法，得到了鋼筋混凝土框架結(jié)構(gòu)在水平均布荷載和水平倒三角荷載作用下的層水平承載力統(tǒng)計(jì)公式。經(jīng)過檢驗(yàn)，統(tǒng)計(jì)公式能夠滿足工程精度要求，為高層建筑框架結(jié)構(gòu)的安全性評價(jià)提供了一種簡便的工程方法。
【關(guān)鍵詞】  框架結(jié)構(gòu)  承載力  層抗側(cè)移剛度  安全性評價(jià)
Analysis of Lateral Load Capacity for Reinforced Concrete Frame Structures/Chen Suwen,Li Guoqiang，Sun Feifei(Dept. of Structural Engineering,Tongji University,Shanghai 200092,China) Abstract:For the reinforced concrete frame structures,the relationship between the story lateral stiffness and lateral loadbearing capacity is studied. The results show that the story lateral stiffness,the reinforcement bar’s configuration and yielding strength, and the vertical load’s effect on the column’s moment capacity are found to be key factors affecting the story lateral loadbearing capacity. Based on the statistical analysis results, a series of formula are obtained for evaluating the lateral loadbearing capacity subjected to the average lateral load and inverted triangle lateral load. The formula provide a convenient approach for safety evaluation of frame structures. Keywords:frame structure;loadbearing capacity;story lateral stiffness;safety evaluation *重大土木及水利工程安全性與耐久性的基礎(chǔ)研究(國家攀登計(jì)劃B)資助項(xiàng)目。