辽宁工程技术大学学报（自然科学版）2026，Vol.45Issue(1)：73-81,9.DOI:10.11956/j.issn.1008-0562.20250253
钢桥管桁架新型螺栓连接节点抗拉性能试验研究
Experimental study on tensile performance of new bolted joints of steel bridge pipe truss
摘要
Abstract
Aiming at the problems of low efficiency and poor mobility of bolt connection of steel pipe truss bridge,a new type of joint structure which can realize full bolt connection of pipe truss is proposed.Through the combination of model test and theoretical analysis,the tensile performance of the new bolted joint was studied.The results show that there are four failure modes of this type of connection:tube wall yield,tube wall yield accompanied by bolt hole punching,end plate yield and bolt failure.Under the failure modes of tube wall yielding,tube wall yielding with bolt hole punching and end plate yielding,the tensile yield strength and ultimate tensile strength of T-shaped square neck unilateral bolt connection with vertical and horizontal bolt holes are lower than those of traditional high-strength bolt connection.For different failure modes,the corresponding design method of T-shaped square neck unilateral bolt connection is proposed,and the modified Gomes model is recommended to calculate the yield bearing capacity of the pipe wall.The research conclusions provide a theoretical basis for bolted connections between truss web members and square steel chord members.关键词
"T"形方颈单边螺栓/方钢管/端板连接/屈服强度/破坏模式Key words
T-shaped square neck unilateral bolt/hollow square steel tube/endplate connection/yield strength/failure modes分类
建筑与水利引用本文复制引用
康龙,孔杰,吴一明,张丁文,孙乐乐..钢桥管桁架新型螺栓连接节点抗拉性能试验研究[J].辽宁工程技术大学学报（自然科学版）,2026,45(1):73-81,9.基金项目
国家自然科学基金项目(52408166) （52408166）
山东省自然科学基金项目(ZR2024QE243) （ZR2024QE243）
山东省青年科技人才托举工程项目(SDAST2024QTA024) （SDAST2024QTA024）
