.
赵根田，姜喜周，万馨
（内蒙古科技大学 建筑与土木工程学院,内蒙古包头 014010）
关键词:隔板贯通式;节点;抗震性能
中图分类号：TU392.1 文献标识码：A
摘 要:为了研究隔板贯通式箱型柱-工字钢梁钢框架节点的抗震性能，共设计了4个试件并进行了低周反复加载。以隔板厚度和隔板悬挑长度为主要考察参数，分析了节点的滞回曲线、刚度退化、破坏形态以及隔板上关键部位的应变分布规律。试验表明，该类型节点具有较好的延性和承载力，强度退化和刚度退化稳定。隔板的厚度对节点承载力有明显影响，厚度越大，承载力越高；在一定范围内，隔板的悬挑长度越大，能将应力有效分散到更大区域，对承载力有一定贡献。试验结果还表明，梁翼缘与隔板之间以螺栓连接代替焊接，可提高节点传力的可靠性。
Study on the seismic behavior of diaphragm-through connections in steel frames
ZHAO Gen-tian, JIANGXi-zhou
(Architecture and Civil
Engineering
School
,
Inner Mongolia
University
of Science and Technology,
Baotou
014010,
China
)
Key words:joint with through diaphragms; steel frames; seismic behavior
Abstract:
To investigate the seismic behavior of diaphragm-through connection between square tubular column and I-beam in steel frame, four specimens were tested under the low cycle hysteretic loading conditions. Considering the effect of the thickness and the geometric size of diaphragms, the hysteretic behavior, the rigidity degeneration, failure modes and the stress distribution of the diaphragms along the axis of beam were obtained. Test result shows that their ductility and bearing capacity are well and bearing capacity and stiffness degenerate steadily. With the increase of the thickness of diaphragm, more bearing capacity can be obtained. Meanwhile, bigger plan dimensions also works, because stress can be distributed to bigger area. The result also indicate that the flange of beam connected with diaphragm by bolting instead of welding in the field will improve the reliability of joints.
