隔板贯通式钢框架节点抗震性能研究  

Study on the seismic behavior of diaphragm-through type Joints in steel frames

作　　者：赵根田[1] 姜喜周 万馨[1] 

机构地区：[1]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2013年第4期396-400,共5页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然基金资助项目(51268042);内蒙古自然基金资助项目(2011MS0704)

摘　　要：为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;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.Four specimens were tested under the low cycle hystecetic loading conditions to investigate the seismic behavior of diaphragm- through eonneetion between square tubular column and l-beam in steel frame. The effect of tile thickness and the geometric size of dia- phragms, the hysteretic behavior, the rigidity degeneration, failure modes and the stress distributicm of the diaphragms ahmg the axis of beam were analyzed. Test result shows that their ductility and bearing capacity are good, and strength and stiffness degenerate steadily. With the increase of the thickness of the diaphragm, better bearing capacity can be obtained. Meanwhile, bigger cantilever length of the diaphragm also works, because the stress can be distributed to a bigger area, The resuh also indicates that the flange of beam con- nected with diaphragm by bohing instead of welding in the field will improve, the reliability of joints.

关 键 词：隔板贯通式 节点 抗震性能 

分 类 号：TU392.1[建筑科学—结构工程]