RCS混合节点抗剪承载力计算方法对比研究  

Comparative study of shear capacity calculation methods for RCS hybrid connections

作　　者：陶宇宸 肖志斌 赵唯坚[1,3] TAO Yuchen;XIAO Zhibin;ZHAO Weijian(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China;The Architectural Design and Research Institute of Zhejiang University Co.Ltd.,Hangzhou 310027,China;Center for Balance Architecture,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学建筑工程学院,杭州310058 [2]浙江大学建筑设计研究院有限公司,杭州310027 [3]浙江大学平衡建筑研究中心,杭州310027

出　　处：《哈尔滨工业大学学报》2024年第1期33-45,共13页Journal of Harbin Institute of Technology

基　　金：中央高校基本科研业务费专项资金(2020QNA4029)。

摘　　要：为研究适用性强的钢筋混凝土柱-钢梁(RCS)混合节点抗剪承载力计算方法,对近年来的RCS节点剪切破坏试验数据进行了统计,将试验结果与中国规程方法、Nishiyama方法、Parra方法和ASCE指南方法计算结果进行了对比,并对各方法的参数适用性进行了讨论。对比结果表明:4种方法均具有工程实用价值,其中Parra方法结果离散性最小,中国规程方法计算最为简便。参数分析表明:4种方法对不同配箍率和不同位置节点均有较好适用性,但对小轴压比节点(轴压比0~0.2)与柱贯通节点预测均偏于保守;中国规程方法对于混凝土强度高于60 MPa的节点预测结果偏于危险,同时对有直交梁节点承载力预测偏于保守。建议在公式中引入混凝土强度系数和直交梁约束系数,用以考虑两者对承载力的影响。To investigate widely applicable shear capacity calculation methods of reinforced concrete column-steel beam(RCS)hybrid connection,this study analyzed the shear failure experimental data of RCS connections in recent years.The experimental results were compared with the calculation results of Chinese specification,Nishiyama method,Parra method,and ASCE guideline,and the parametric applicability of each method was discussed.The comparison results showed that all the four methods had engineering value.The minimum discreteness of the results of Parra method was obtained,and the calculation process of Chinese specification was the simplest.The results of parametric study showed that all the four methods were suitable for connections with different stirrup ratios and positions.However,conservative estimates were obtained for specimens with small axial load ratios(from 0 to 0.2)and column-through connections.For the Chinese specification,the predicted strength of connections with concrete strength higher than 60 MPa was unsafe,while the predicted strength of connections with transverse beams was conservative.Therefore,it is suggested to introduce concrete strength coefficient and confined coefficient of transverse beam into the equation considering the influence of these two factors.

关 键 词：RCS框架结构 混合节点 抗剪承载力 高强混凝土 直交梁 

分 类 号：TU398.9[建筑科学—结构工程] TU312.1