预埋钢管钢筋混凝土柱-钢梁装配式节点力学性能试验研究  

Experimental Research on Mechanical Properties of Pre⁃embedded Steel Pipe Reinforced Concrete Column⁃steel Beam Prefabricated Joint

作　　者：潘天童 祝磊 孙海林 田春雨 王美 尹飞 PAN Tiantong;ZHU Lei;SUN Hailin;TIAN Chunyu;WANG Mei;YIN Fei(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;China Architecture Design&Research Group,Beijing 100044,China;China Academy of Building Research,Beijing 100013,China;Institute of Science and Technology Development,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]中国建筑设计研究院有限公司,北京100044 [3]中国建筑科学研究院有限公司,北京100013 [4]北京建筑大学科学技术发展研究院,北京100044

出　　处：《施工技术（中英文）》2024年第20期159-166,共8页Construction Technology

摘　　要：为研究轴压比和预埋钢管对采用端板螺栓连接的钢筋混凝土柱-钢梁节点力学性能的影响,提出了一种新型钢筋混凝土柱-钢梁装配式节点,采用预埋钢管代替原有PVC管并预留高强对穿螺栓孔道,对不同轴压比下的6个试件进行梁端静力加载试验。根据试验参数,利用有限元分析软件ABAQUS进行建模并加以验证。试验结果表明,除2个试件由于焊缝断裂导致试验终止外,其余试件破坏形态均为梁铰破坏,预埋钢管相比PVC管提高了钢筋混凝土柱节点域抗剪能力,起到了保护作用;6个试件均属于半刚性节点,预埋钢管对于提高节点初始刚度和承载力有一定作用,但并不显著,节点初始刚度和承载力随轴压比的增大而提高;采用有限元分析软件ABAQUS进行模拟,与试验结果吻合,验证了有限元建模方法的合理性,为此种新型节点的后续研究和设计应用提供了参考依据。In order to research the influence of axial compression ratio and pre-embedded steel pipes on the mechanical properties of reinforced concrete column-steel beam(RCS)prefabricated joint with end plate and bolt connection,a new design for a reinforced concrete column-steel beam assembled joint is introduced,which involves the use of pre-embedded steel pipes instead of conventional PVC pipes for reserving high-strength bolt holes.Static loading tests were conducted on the beam ends of six specimens under different axial compression ratios.The study modeled and validated based on the test parameters,using the finite element analysis software ABAQUS.Results shows that,except for two specimens with weld fracture that led to termination,the remaining specimens exhibited beam hinge damage.Compared with PVC pipes,pre-embedded steel pipes improved the shear capacity of the reinforced concrete column joint area and played a protective role.All six specimens were classified as semi-rigid joints,and pre-embedded steel pipes enhanced initial stiffness and bearing capacity of the joints.However,the impact on initial stiffness and bearing capacity of the joints was found to be less significant.The study reveals that both initial stiffness and bearing capacity of the joints increased with higher axial compression ratio.Finite element simulations using ABAQUS aligned with the test results,validating the modeling method’s reasonableness.These findings provide a valuable reference for subsequent research and practical design application of this novel joint type.

关 键 词：钢筋混凝土柱 钢梁 节点 轴压比 试验 有限元分析 承载力 刚度 

分 类 号：TU398[建筑科学—结构工程]