- 摘 要
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（西安建筑科技大學(xué)土木工程學(xué)院，西安 710055）
［摘要］為了獲得適用范圍更廣的鋼筋混凝土柱-鋼梁（RCS）組合節(jié)點抗剪承載力公式，利用12個RCS組合節(jié)點的試驗數(shù)據(jù)對6組抗剪承載力公式進行計算分析，指出了各公式的特點和適用范圍。通過分析節(jié)點區(qū)混凝土、鋼梁腹板以及箍筋等的受力機理和其對節(jié)點承載力的貢獻，提出了改進的RCS組合節(jié)點抗剪承載力公式；通過17個節(jié)點試驗數(shù)據(jù)對改進公式進行驗證，結(jié)果表明：改進后的公式計算結(jié)果準確且適用性好；通過分析節(jié)點區(qū)各組成部分對節(jié)點抗剪承載力的貢獻，結(jié)果表明混凝土和鋼梁腹板對RCS組合節(jié)點抗剪承載力的貢獻占90%以上。研究成果為設(shè)計計算RCS組合節(jié)點抗剪承載力提供參考。
［關(guān)鍵詞］鋼筋混凝土柱-鋼梁; 組合框架; 組合節(jié)點; 抗剪承載力; 構(gòu)造措施
中圖分類號：TU398.9 文獻標識碼：A 文章編號：1002-848X(2014)06-0074-05
Research on shear bearing capacity of reinforced concrete column-steel beam composite joint
Men Jinjie, Li Huijuan, Wang Xiaodan, Guan Runrun, Guo Zhifeng
(School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China)
Abstract: To get a widely used shear bearing capacity formula of RCS composite joints, 6 groups of shear bearing capacity formula were presented and analyzed by comparing the calculation results and the experimental data of 12 RCS composite joints. The characteristics of the 6 formulas and their range of application were pointed out as well. By analyzing the stress mechanism of the concrete, steel webs and stirrups in the joint and their contribution to the bearing capacity, an improved shear bearing capacity formula of RCS composite joints was put forward. The proposed formula was verified based on experimental data of 17 joints. Results show that the formula is accurate and suitable for joints. By calculating the contribution of RCS composite joint components to the bearing capacity, it is concluded that the concrete and webs contribute more than 90% of the whole shear bearing capacity of the joint. The results provide a reference for the design and calculation of the shear bearing capacity of RCS composite joints.
Keywords: reinforced concrete column-steel beam; composite frame; composite joint; shear bearing capacity; structural measure
*國家自然科學(xué)基金(51008244，51178380)，陜西省教育廳專項科研基金(2013JK0982)。
作者簡介：門進杰，博士，副教授，Email: men2009@163.com。
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