T型钢连接空间钢框架的动力性能研究

Research on Dynamic Performance of T Steel Connection Space Steel Frame

半刚性连接由于全部采用螺栓连接,不需要现场施焊,具有较好的抗震性能。国内对半刚性连接钢框架的试验研究主要集中在双腹板顶底角钢连接钢框架的性能研究方面,而对其他类型的半刚性连接钢框架的试验研究几乎没有。为了对半刚性连接钢框架的受力性能有更深层次的了解,对T型钢连接空间钢框架进行拟动力试验,在国内尚属首例。通过T型钢连接空间钢框架的节点区应变、位移和荷载反馈的变化情况,分析不同等级地震作用下T型钢连接空间钢框架的动力反应并进行对比。试验表明:随地震作用的增大,半刚性连接空间钢框架的动力响应增大、变形能力良好、具有很好的耗能性能,从而表明T型钢连接钢框架具有较好的动力性能。

Semi-rigid connections adopt bolt connections that do not need to spot welds and have good seismic performance.Experimental researches on the semi rigid connection steel frame were mainly concentrated in the double web and top and seat angle connection steel frame,and there were no experimental researches on performance for other types of semi-rigid connection steel frame.To have a deeper understanding for mechanical properties of semi rigid connection steel frame,pseudo dynamic test for T steel connection space steel frame that was firstly researched in China was carried out.Collecting the changes of strain,displacement and load feedback,dynamic response of T steel connection steel frame was analyzed and compared under different level earthquake action.The results of test showed that the dynamic response of space steel frame with T steel connection increased with the increasing of earthquake,deformation ability was good and had better energy dissipation performance,so it also concluded that T steel connection steel frame had good dynamic performance.