钢结构T型连接节点受力性能试验研究

Experimental study on the T-stub connections in steel structure

对不同构造形式的10个T型连接节点试件进行试验研究,分析了构造变化对T型件连接承载能力及高强度螺栓受力性能的影响.试验结果表明:高强度螺栓拉力存在撬力现象,T型连接表现出典型半刚性特性.T型件翼缘厚度、螺栓直径及螺栓间距等构造因素对连接节点承载能力及高强度螺栓受力产生不同程度的影响,设计中可根据具体情况选择最优的构造形式.研究结果可供工程应用参考.

The paper presents the results of an experimental analysis devoted to the study of the mechanical behavior of high strength bolts and bearing capacity of T-stub connections. Then specimens are characterized by different values of thicknesses of T-flange, diameters of bolts and bolt arrangements, covering the whole range of practical design situation. The results show that the effect of prying force on bolt tension is found in tests, and the T-stub connection is a typical semi-rigid connection. The configuration parameters have different influence on the mechanical behavior of connections, and different constructional design of T-stub connections should be selected according to specific situation. The research conclusions can be used as reference for the engineering application.