建筑结构学报2024，Vol.45Issue(6)：235-245,11.DOI:10.14006/j.jzjgxb.2022.0533
碳纤维增强胶合木钢填板螺栓连接节点横纹受力性能研究
Study on mechanical behavior of carbon fiber reinforced bolted glulam connections with slotted-in steel plates loaded perpendicular to grain
摘要
Abstract
Bolted glulam connections with slotted-in steel plates are prone to brittle failure under loading.In order to study the bearing capacity,deformation performance and failure modes of the bolted glulam connections with slotted-in steel plates reinforced by carbon fiber,considering the laying position and number of layers,the dowel bearing strength test was carried out.Then,taking the bolt end distance,middle distance,number,arrangement and reinforce mode as parameters,tension test of the connections perpendicular to grain and finite element analysis were carried out.Test results show that the dowel bearing strength can be increased by 171％and the dispersion coefficient can be reduced by 84％when reinforced by two or four layers carbon fiber in two or four sides.The failure mode of the CFRP reinforced joint is changed from brittle fracture to ductile failure after fiber reinforcing,the ultimate load and displacement ductility factor increase by 181％and 625％maximumly.The edge and middle distance of the bolted joint can be appropriately reduced after reinforcement.The formulas of the dowel bearing strength after CFRP reinforcing and the bearing capacity of CFRP reinforced bolted glulam connections with slotted-in steel plates are given,which can provide reference for engineering design.关键词
胶合木钢填板螺栓连接/纤维增强/破坏模式/横纹受拉承载力Key words
bolted glulam wood-steel-wood connection/fiber reinforced/failure mode/bearing capacity perpendicular to grain分类
建筑与水利引用本文复制引用
张晓聪,徐德良,季栋梁,陆伟东..碳纤维增强胶合木钢填板螺栓连接节点横纹受力性能研究[J].建筑结构学报,2024,45(6):235-245,11.基金项目
江苏省建筑节能和建筑产业现代化-科技支撑项目(苏规材[2015]11号),国家重点研发计划(2017YFC0703506). （苏规材[2015]11号）
