T形钢连接梁柱半刚性节点滞回性能试验研究及数值分析

发布时间：2018-04-05 17:02

本文选题：T形钢连接节点　切入点：半刚性节点　出处：《建筑结构学报》2014年07期

【摘要】：为研究T形钢连接梁柱半刚性节点的滞回性能,对6个T形钢连接梁柱半刚性节点试件进行拟静力试验。分析梁高、螺栓直径、T形连接件尺寸、螺栓个数以及柱截面面积等参数对节点的受力过程、破坏模式、滞回性能、延性性能的影响。利用有限元软件ABAQUS对试验过程进行分析,将分析结果和试验结果进行对比并分析了误差产生的原因。研究结果表明:T形钢连接梁柱节点变形性能良好,节点的极限转角均超过0.03 rad,是典型的半刚性连接节点;节点延性性能良好,各节点位移延性系数均大于3;各试件的滞回曲线在加载后期呈Z形,节点耗能系数较小(与端板连接半刚性节点相比);T形连接件尺寸和连接柱及T形件的螺栓个数是影响节点初始刚度、承载力和变形能力的主要因素,梁高对节点性能的影响次之;有限元分析结果与试验结果基本吻合;采用考虑材料循环塑性特征的有限元分析模型可以很好地预测节点在循环荷载作用下的受力性能。
[Abstract]:In order to study the hysteretic behavior of Liang Zhu semi-rigid joints connected with T-shaped steel, quasi-static tests were carried out on 6 specimens of semi-rigid T-joints.The effects of the parameters such as beam height, bolt diameter and T-shaped connection size, number of bolts and column cross-section area on the stress process, failure mode, hysteretic performance and ductility of the joints are analyzed.The finite element software ABAQUS is used to analyze the test process. The results are compared with the test results and the causes of the errors are analyzed.The research results show that Liang Zhu joints with 1: T-shaped steel have good deformation performance, and the ultimate rotation angles of joints are above 0.03 rad. they are typical semi-rigid connections, and the ductility of the joints is good.The displacement ductility coefficient of each node is greater than 3, and the hysteretic curve of each specimen is Z shape at the later stage of loading.The energy consumption coefficient of the joints is small (compared with the semi-rigid joints connected with the end plate, the dimensions of the T-joints and the number of bolts of the connecting columns and T-shaped parts are the main factors affecting the initial stiffness, bearing capacity and deformation capacity of the joints.The effect of beam height on the performance of joints is secondary; the results of finite element analysis are basically consistent with the experimental results; the finite element analysis model considering the cyclic plastic characteristics of materials can well predict the behavior of joints under cyclic load.
【作者单位】：广西大学土木建筑工程学院;
【基金】：国家自然科学基金项目(11072064,11272094) 广西理工科学试验中心重点项目(LGZX201101) 广西优秀博士论文培育项目(YCB2014021)
【分类号】：TU392.1;TU317

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