论文部分内容阅读
为了探索将钢框架中的钢梁高强度螺栓拼接节点按照摩擦耗能节点进行设计的可行性,进行了三个试件的循环加载试验。所有试件的梁柱连接都采用焊缝连接,钢梁拼接按照拼接中心处的实际受力设计,翼缘和腹板拼接全部采用10.9级高强螺栓摩擦型连接,螺栓孔采用长圆孔。试验结果表明:三个试件都能够实现拼接中心的摩擦耗能作用,而且梁柱连接焊缝不会提前破坏;所有试件都表现出了良好的耗能性能;但试验也发现了一些值得注意的问题,如在循环加载作用下,拼接节点的承载能力和耗能能力下降较多,长圆孔的开孔长度对节点的转动能力和耗能能力影响较大等。
In order to explore the feasibility of designing the high-strength bolt splicing joint of steel beam in steel frame according to the friction energy dissipation node, cyclic loading tests of three specimens were carried out. Beam connections of all the specimens were welded. The steel beams were spliced according to the actual stress at the splicing center. All flanges and webs were spliced with friction-type high strength 10.9 bolts. The bolt holes were oblong holes. The experimental results show that all the three specimens can achieve the friction energy dissipation function of the splicing center, and the weld of the beam-column joint does not prematurely rupture. All the specimens show good energy dissipation performance. However, the test also found some worthwhile Attention should be paid to the fact that under cyclic loading, the carrying capacity and energy dissipation capacity of spliced joints are greatly reduced, and the hole length of oblong holes greatly affects the rotational and energy dissipation capacities of the joints.