钢连梁与混凝土剪力墙内埋钢暗柱式连接节点受力性能——试验研究

发布时间：2018-02-26 04:22

本文关键词： 钢连梁联肢剪力墙钢暗柱墙梁节点试验　出处：《土木工程学报》2017年02期 　论文类型：期刊论文

【摘要】：为研究钢连梁与混凝土剪力墙之间采用内埋钢暗柱式连接的受力性能,按照钢暗柱长度设计两组节点试件,分别为长钢暗柱节点和短钢暗柱节点,每组分别进行单调加载和低周反复加载试验。对比长、短钢暗柱节点的刚度和承载力,并分析长、短钢暗柱两种节点的不同破坏模式,发现长钢暗柱连接节点的破坏主要由剪力墙节点域钢暗柱腹板剪切屈服而破坏,而短钢暗柱连接节点破坏主要由于剪力墙钢骨附近的水平分布钢筋屈服而无法约束钢骨刚体转动。因此,长钢暗柱连接节点可以通过增加腹板厚度和高度来提高节点承载力,而短钢暗柱连接节点的承载力可以通过增加钢连梁与混凝土墙连接区域水平分布钢筋的直径或者减小钢筋间距来提高。
[Abstract]:In order to study the mechanical behavior of steel-connected beam and concrete shear wall connected by buried steel dark column, two groups of joint specimens were designed according to the length of steel dark column, namely, the long steel dark column joint and the short steel dark column joint. Each group was subjected to monotone loading and low cycle repeated loading respectively. The stiffness and bearing capacity of long and short steel dark column joints were compared, and the different failure modes of long and short steel dark column joints were analyzed. It is found that the failure of deep column connection joint of Changgang is mainly caused by shear yield of steel dark column web in shear wall joint domain. However, the failure of short steel dark column joint is mainly due to the yield of horizontal distributed steel bar near the shear wall steel bone, which can not restrain the rotation of steel rigid body. Therefore, the long steel dark column connection joint can increase the bearing capacity of the joint by increasing the thickness and height of web plate. The bearing capacity of short steel dark column connections can be improved by increasing the diameter of horizontal distribution of steel bars in the connection area between steel beams and concrete walls or reducing the spacing of steel bars.
【作者单位】：同济大学土木工程防灾国家重点实验室;同济大学土木工程学院;
【基金】：国家十二五科技支撑计划(2012BAJ13B02)
【分类号】：TU398.9

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