摘要
本文研究腐蚀对自攻螺钉连接件强度退化的影响。模拟海洋大气环境,进行自攻螺钉连接件腐蚀试验,探究螺钉直径、螺钉数量和钢板厚度对连接件在腐蚀周期下的力学性能。研究结果表明,单颗螺钉连接件强度退化主要因素为腐蚀程度,两颗螺钉连接件强度退化主要因素为板材厚度,四颗螺钉连接件强度退化主要影响因素为螺钉直径。其中,四颗螺钉连接件腐蚀后的力学性能最优,采用最大直径尺寸螺钉,其腐蚀后增益作用明显,建议优先考虑应用。
This paper investigates the impact of corrosion on the strength degradation of self-tapping screw connections.Corrosion tests on self-tapping screw connections were conducted in a simulated marine atmospheric environment to explore the mechanical properties of screw diameter,number of screws,and plate thickness on the connections under corrosion cycles.The research findings demonstrate that the primary factor contributing to strength degradation of single screw connections is the corrosion degree,while for two screw connections,it is the thickness of the plate,and for four screw connections,it is the screw diameter.Notably,four screw connections exhibit optimal mechanical properties after corrosion,with the use of the largest diameter size screw resulting in a significant gain effect,thus recommending its prioritized application.
作者
高鹏
吴曼
陈明
GAO Peng;WU Man;CHEN Ming(Inner Mongolia University of Science and Technology,College of Civil Engineering,Inner Mongolia,Baotou,014010,China;Inner Mongolia University of Science and Technology,Key Laboratory of Civil Engineering Safety and Durability in Inner Mongolia Autonomous Region,Inner Mongolia,Baotou,014010,China;Inner Mongolia University of Science and Technology,Engineering Technology Research Centre for Disaster Prevention and Mitigation of Building Structures in Inner Mongolia Autonomous Region,Inner Mongolia,Baotou,014010,China)
基金
国家自然科学基金项目(52168024)
内蒙古科技大学建筑科学研究所开放基金项目(JYSJJ-2021M03)。
关键词
薄壁型钢
螺钉连接
盐雾腐蚀
力学性能
Thin-walled steel sections
Screw connections
Salt spray corrosion
Mechanical properties
作者简介
第一作者:高鹏(1979-),男,博士,副教授,研究方向:钢结构。E-mail:gaop182@163.com;通讯作者:陈明(1978-),男,博士,教授,研究方向:钢结构和空间结构的设计与理论研究。E-mail:cmlx-1978@163.com。
