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RC矩形柱框架結(jié)構(gòu)不同柱-梁抗彎強度比的Pushover分析
管民生1,2,杜宏彪1,韓大建2
摘 要

(1 廣東工業(yè)大學(xué)建設(shè)學(xué)院,廣州 510006; 2 華南理工大學(xué)建筑學(xué)院,廣州 510640)
[摘要]采用均布和倒三角兩種不同的側(cè)向荷載分布模式,以頂點位移、層間位移、結(jié)構(gòu)塑性鉸分布等作為性能評估的參數(shù),對不同柱-梁抗彎強度比值的矩形柱框架結(jié)構(gòu)進行抗震性能分析,并對其計算結(jié)果進行了分析和比較。研究發(fā)現(xiàn),考慮到樓板翼緣及其鋼筋對梁端抗彎承載力的貢獻(xiàn),要保證強柱弱梁的實現(xiàn),矩形柱框架結(jié)構(gòu)柱-梁抗彎強度比值應(yīng)不小于2.0。
[關(guān)鍵詞]矩形柱;強柱弱梁;Pushover分析;抗震性能
Pushover analysis on rectangular column frames with different column-to-beam strength ratios
Guan Minsheng1,2,Du Hongbiao1, Han Dajian2(1 Faculty of Construction, Guangdong University of Technology, Guangzhou 510006, China;2 College of Architecture and Civil Engineering, South China University of Technology, Guangzhou 510640, China)
Abstract:In order to analyze the seismic performance of rectangular column frames with different column-to-beam strength ratios, the Pushover analysis with two common load patterns on each model is carried out. The deformation and ductility, including the top displacement, interstory displacement and plastic joints distribution and so on, are used as measures for structural performance evaluation. On the meantime, the analysis results are analyzed and compared. It is found that taking the contributions of the beam from the slab in compression for positive moment and slab reinforcement for negative moment within the effective flange width into consideration, the minimum column-to-beam strength ratio requirement is 2.0 to satisfy the strong column and weak beam seismic principle.
Keywords:rectangular column; strong column and weak beam; Pushover analysis; seismic performance
廣東省教育廳基金項目(020076),廣東工業(yè)大學(xué)青年基金(082031)。
作者簡介:管民生,講師,博士研究生,Email:gmms361@163.com。
參考文獻(xiàn)
[1]吳勇.設(shè)計基本地震加速度為0.15g和0.30g的地區(qū)鋼筋混凝土框架非線性動力反應(yīng)研究[D].重慶:重慶大學(xué),2002
[2]種迅,葉獻(xiàn)國,吳本華. Pushover分析中側(cè)向力分布形式的影響[J].工程力學(xué)增刊,2001
[3]管民生,杜宏彪. 現(xiàn)澆板參與工作后框架結(jié)構(gòu)的pushover分析研究[J].地震工程與工程振動,2005,25(5).
[4]WILLIAMS M S, SEXSMITH R G. Seismic damage induces for concrete structures: a state-of-art review[J]. Earthquake Spectra,1995,11(2):319-349.
[5]錢稼茹,羅文斌. 建筑結(jié)構(gòu)基于位移的抗震設(shè)計[J]. 建筑結(jié)構(gòu),2001,31(4).

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