新时代地铁扣件锚固螺栓断裂原因研究
Discussion on the Reasons for the Fracture of Anchor Bolts for Subway Fasteners in the New Era
盛红喜 1郑重1
作者信息
- 1. 晋亿实业股份有限公司,浙江嘉兴 314100
- 折叠
摘要
讨论了新时代地铁扣件锚固螺栓断裂的原因.通过现场测试,获悉螺栓扭力矩和轴力之间的关系.通过构建有限元计算模型,对比分析单、双弹簧垫圈时,扣件锚固螺栓的受力情况.讨论结果显示,在压紧的情况下双垫圈能够持续供给剪切变形,在高铁列车的荷载作用下,相较单垫圈,双垫圈的螺栓轴力增长幅度更小,发生断裂的概率更低.
Abstract
This article mainly discusses the reasons for the fracture of anchor bolts for subway fasteners in the new era.Through on-site testing,the relationship between bolt torque and axial force was obtained.By constructing a finite element calculation model,compare and analyze the stress situation of the anchor bolt of the fastener when using single and double spring washers.The discussion results show that double washers can continuously supply shear deformation under compression,and the increase in bolt axial force under the load of high-speed trains is smaller than that of single washers and double washers,resulting in a lower probability of fracture.
关键词
地铁/扣件螺栓/断裂原因/垫圈Key words
subway/fastener bolts/cause of fracture/washers引用本文复制引用
出版年
2024
NETL
NSTL
万方数据