建筑钢结构进展2024，Vol.26Issue(3)：52-61,10.DOI:10.13969/j.cnki.cn31-1893.2024.03.006
螺栓连接和拉铆连接在剪切循环荷载作用下的松动行为研究
The Loosening Behavior of Bolted Connection and Riveted Connection Under Cyclic Shear Load
摘要
Abstract
With its excellent anti-loosening performance,the riveted connection is used in more and more engineering fields.In order to study the loosening performance of a new domestic rivet under cyclic shear load,this paper takes the most widely used bolt connection as the control,and carries out the loosening test research under cyclic shear load on a common bolt of grade 4.8,4.8 anti-loosening bolt and small-sized pull rivet of size 8 mm,respectively.This paper analyzes the loosening process of the three types of connections under cyclic shear load,and studies the load amplitude and frequency.The effects of load magnitude and frequency on the loosening behavior of bolted and riveted connections were investigated.The damage morphology was analyzed in combination with microscopic test methods to further study the loosening prevention principle and micro-motion damage mechanism of bolts and rivets under cyclic shear loading.The study shows that the anti-loosening performance of riveted connections is better than that of bolted connections under the same working conditions.The loosening of bolted and riveted connections increases when the load amplitude increases or the load frequency decreases.The anti-loosening performance of rivets is significantly improved when compared with that of bolts due to their unique circular structure,and the interference fit mechanism of the mating surface after riveting.The wear mechanisms of bolts and rivets are mainly abrasive wear and fatigue wear.关键词
拉铆连接/螺栓连接/防松性能/剪切循环荷载/磨粒磨损/疲劳磨损Key words
riveted connection/bolted connection/anti-loosening performance/cyclic shear load/abrasive wear/fatigue wear分类
建筑与水利引用本文复制引用
杨俊芬,郝凯丽,钟炜辉,王维新,苗广威,张钦..螺栓连接和拉铆连接在剪切循环荷载作用下的松动行为研究[J].建筑钢结构进展,2024,26(3):52-61,10.基金项目
陕西省自然科学基础研究计划面上项目(2022JM-308),陕西省教育厅服务地方专项科研计划项目(21JC019),中国中车集团有限公司重点项目(2020CKB055) （2022JM-308）
