方钢管柱-H形钢梁铸钢连接节点静力性能试验研究

发布时间：2018-06-27 19:38

本文选题：方钢管柱 + H形钢梁　；参考：《建筑结构学报》2015年09期

【摘要】：为研究方钢管柱-H形钢梁铸钢连接节点的静力性能,对8个节点试件进行了单调加载静力试验。结果表明,当节点柱受弯能力大于梁受弯能力时,在单调加载下铸钢连接件环板以及梁翼缘屈服、梁截面屈曲,最终发展到梁端形成塑性铰而破坏;反之节点则表现为节点域剪切破坏,最终破坏形式为铸钢连接件弯曲。节点的转动刚度符合钢框架刚接节点要求。在此基础上,通过理论及有限元分析得出在保证钢管柱受弯能力大于H形钢梁受弯能力的前提下,当钢管柱外径为250~400 mm,铸钢连接件环板宽度为25~40 mm、厚度为60~90 mm时,节点承载力的理论值和有限元分析结果与试验结果吻合良好,进一步验证了基于变形协调原则的方钢管柱-H形钢梁铸钢连接节点承载力计算理论的适用性。
[Abstract]:In order to study the static behavior of cast steel joint of square steel tubular column H-shaped steel beam, a monotone loading static test was carried out on 8 joints. The results show that when the bending capacity of the joint column is greater than that of the beam, the ring plate and flange of the cast steel connection yield under monotonic loading, and the beam section buckles, and finally the plastic hinge is formed at the end of the beam and destroyed. On the other hand, the joint is shearing failure in the joint domain, and the ultimate failure form is the bending of cast steel connection. The rotational stiffness of the joints meets the requirements of steel frame rigid joints. On this basis, through theoretical and finite element analysis, on the premise that the bending capacity of steel tube column is greater than that of H-shaped steel beam, when the outer diameter of steel tube column is 250 ~ 400 mm, the width of ring plate of cast steel connection is 2540 mm and the thickness is 6090 mm, The theoretical and finite element analysis results of the joint bearing capacity are in good agreement with the experimental results, which further verifies the applicability of the calculation theory of the bearing capacity of the square steel tube-H-shaped steel beam cast-steel connections based on the deformation coordination principle.
【作者单位】：天津大学建筑工程学院;天津大学滨海土木工程结构与安全教育部重点实验室;
【基金】：国家自然科学基金项目(51178307) 天津市城乡建设和交通委员会建设科技项目(2013-35)
【分类号】：TU392

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