螺栓排数和自攻螺钉对木梁柱节点抗侧力性能的影响  

Effect of Bolt Row and Self-tapping Screw Reinforcement on Lateral Performance of Bolted Timber Connection

作　　者：何敏娟[1] 赵艺[1] 高承勇[2] 张家华[2] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]上海现代建筑设计(集团)有限公司,上海200092

出　　处：《同济大学学报（自然科学版）》2015年第6期845-852,共8页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金(51378382)

摘　　要：通过4组梁柱节点在单调和往复加载下的抗侧力试验,得到了各组节点的破坏模式、弯矩-转角曲线、滞回曲线、强度、刚度、延性及耗能性能,研究了不同螺栓排数和自攻螺钉加强对节点抗侧力性能的影响.结果表明,普通节点中裂缝出现早,开展迅速;增加螺栓排数可提高节点的强度和延性,其中强度提高更明显;自攻螺钉加强可明显减轻和延缓木材的开裂,提升节点的延性和抗震性能.Four groups of experimental tests were conducted with T-shaped beam-to-column connections under monotonic and reversed cyclic loading. The failure modes, momentrotation curves, moment capacity, ductility and energy dissipation properties were obtained, and the effect of bolt row and self-tapping screw reinforcement on the lateral performance of the connection were studied. The results show that the cracks on traditional bolted connections occur early with rapid development. The strength and ductility, especially the strength, increases with the increase of bolt row. The self-tapping screw reduces and delays wood splitting, which enhances the ductility and seismic performance of the connections.

关 键 词：节点抗侧力 螺栓排数 自攻螺钉 劈裂 延性 

分 类 号：TU366.2[建筑科学—结构工程]