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近来,钢管混凝土(CFST)斜柱在一些建设项目中得到了应用,它们常与Ⅰ型梁或箱形梁相连接。给出了钢管混凝土方形中空截面(SHS)钢柱和箱形钢梁节点的测试结果,并对24个边节点试样进行了测试。参数研究包括:柱样式、节点类型和加载方式。通过对这些复合节点的失效模式、强度和刚度退化、能量耗散的研究,利用现行规范对这些复合节点的分类进行了讨论。试验结果表明,单调荷载作用下,这些复合节点在荷载降低到极限强度的85%之前超过0.04rad,节点间的内、外隔板试样也表现出优良的抗震性能。
Recently, concrete filled CFST slab columns have been used in some construction projects. They are often connected to type I or box girders. The test results of steel reinforced concrete columns with square hollow sections (SHS) and steel box girders are given, and 24 edge specimens are tested. Parametric studies include: Column styles, node types, and loading methods. The failure modes, the degeneration of strength and stiffness, and the energy dissipation of these composite nodes are studied, and the classification of these composite nodes is discussed with the current codes. The experimental results show that under monotonic loading, the composite nodes exceed 0.04 rad before the load decreases to 85% of the ultimate strength, and the inner and outer bulkhead samples also show excellent anti-seismic performance.