方钢管混凝土-钢梁半刚性节点抗弯性能分析

FLEXURAL BEHAVIOR ANALYSIS OF SEMI-RIGID JOINTS OF CONCRETE-FILLED SQUARE TUBULAR COLUMN TO STEEL BEAM

半刚性节点由于其优越的受力性能,得到国内外研究者的广泛关注。提出一种采用角钢连接的方钢管混凝土柱和钢梁的新型半刚性节点形式,并通过与欧洲规范EC 3对比,确定新型节点属于半刚性连接。提取节点螺栓群在不同参数下的剪力和弯矩,分析节点在荷载作用下承担弯矩和剪力的主要机制。通过分析,给出连接板处螺栓承担节点竖向剪力的百分比,以及角钢连接处螺栓承担弯矩的百分比。

Due to the outstanding mechanical properties,semi-rigid joints have received extensive attention from domestic and international researchers. A new form of semi-rigid joint using concrete-filled steel square tubular column and steel beam connected with angle steel was proposed. In addition,compared to Eurocode 3,the new joint was confirmed to be of a semi-rigid one. The joint bolts＇ shear force and bending moment with different parameters were obtained and used to analyze the major mechanism of the bearing bending moment and shear force under loads. Through the analysis,the percentage of vertical shear undertaken by the bolts at the connection board and the percentage of the bending moment provided by the bolts at the angle steel connection points were given.