同济大学学报（自然科学版）2024，Vol.52Issue(5)：676-683,748,9.DOI:10.11908/j.issn.0253-374x.24030
新型外包钢板-自攻螺钉连接胶合竹梁柱节点转动性能
Rotational Behavior of Innovative Glued Laminated Bamboo Beam-to-Column Connections Using External Steel Plates and Self-Tapping Screws
摘要
Abstract
In order to solve the difficulties of slotting and perforating of laminated bamboo,and the problem of bamboo splitting when the beam-to-column connections were rotated,the rotational behavior of innovative laminated bamboo beam-to-column connections using side steel plates and self-tapping screws were studied.Two types of connections were designed,and a monotonic loading test was conducted on 5 specimens,including T-shaped extended end plate connections with side plates that confine the beam and double L-shaped end bracket connection partially confining both the beam and column,to analyze the failure mode,initial stiffness,ultimate bearing capacity,deformation capacity,and ductility coefficient of the connections.The results of the test show that most mechanical parameters of T-connections are better than those of L-connections.The failure of the T-connection using more screws of smaller diameter(T8x8-M)is caused by tensile rupture of steel plates and self-tapping screws,while the failure of the T-connection using less screws of larger diameter(T6×10-M)is caused by bamboo splitting and shear failure of steel plates.The reinforcement of self-tapping screws transversely enhances the mechanical behavior of all connections,especially T-connections.The design code"Standard for design of engineered bamboo structures"(T/CECS 1101-2022)can conservatively predict the bending capacity of the laminate bamboo connections.关键词
胶合竹/梁柱节点/自攻螺钉连接/外包钢板/转动性能Key words
laminated bamboo/beam-to-column connection/self-tapping screw connection/external steel plate/rotational behavior分类
建筑与水利引用本文复制引用
冷予冰,陈溪,刘博,王明谦,宋晓冰,许清风..新型外包钢板-自攻螺钉连接胶合竹梁柱节点转动性能[J].同济大学学报（自然科学版）,2024,52(5):676-683,748,9.基金项目
国家自然科学基金(52378522) （52378522）
上海市自然科学基金(23ZR1454300) （23ZR1454300）
上海市青年科技启明星计划(23QB1404400) （23QB1404400）
