（西安建筑科技大学土木工程学院，西安 710055）

［摘要］为了获得适用范围更广的钢筋混凝土柱-钢梁（RCS）组合节点抗剪承载力公式，利用12个RCS组合节点的试验数据对6组抗剪承载力公式进行计算分析，指出了各公式的特点和适用范围。通过分析节点区混凝土、钢梁腹板以及箍筋等的受力机理和其对节点承载力的贡献，提出了改进的RCS组合节点抗剪承载力公式；通过17个节点试验数据对改进公式进行验证，结果表明：改进后的公式计算结果准确且适用性好；通过分析节点区各组成部分对节点抗剪承载力的贡献，结果表明混凝土和钢梁腹板对RCS组合节点抗剪承载力的贡献占90%以上。研究成果为设计计算RCS组合节点抗剪承载力提供参考。

［关键词］钢筋混凝土柱-钢梁; 组合框架; 组合节点; 抗剪承载力; 构造措施

中图分类号：TU398.9      文献标识码：A      文章编号：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

*国家自然科学基金(51008244，51178380)，陕西省教育厅专项科研基金(2013JK0982)。

作者简介：门进杰，博士，副教授，Email: men2009@163.com。

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