理化检验-物理分册2025，Vol.61Issue(11)：58-62,5.DOI:10.11973/lhjy-wl240182
后扩底锚栓断裂原因
Fracture reason of post pedestal anchor bolt
祁永东 1万春阳 1楚海菊 2宋玉胜 3孙国峰 1崔喆珉1
作者信息
- 1. 浙江国检检测技术股份有限公司,海盐 314300
- 2. 中国核工业第二二建设有限公司,海盐 314300
- 3. 宁波必固得金属科技有限公司,宁波 324400
- 折叠
摘要
Abstract
The fracture phenomenon of a post pedestal anchor bolt was analyzed by means of macroscopic observation,chemical composition analysis,scanning electron microscope and energy spectrum analysis,metallographic examination and hardness test.The results show that the microstructure,thread surface continuity,mechanical properties and chemical composition of the anchor bolt were not abnormal.The fracture mode of the anchor bolt was fatigue fracture.The corrosion pit at the bottom of the threaded tooth aggravated the stress concentration at this part.Under the action of periodic load,the fatigue crack initiated and expanded,which eventually led to the fracture of the anchor bolt.关键词
后扩底锚栓/疲劳断裂/腐蚀/应力集中/预紧力Key words
post pedestal anchor bolt/fatigue fracture/corrosion/stress concentration/pre-tightening force分类
矿业与冶金引用本文复制引用
祁永东,万春阳,楚海菊,宋玉胜,孙国峰,崔喆珉..后扩底锚栓断裂原因[J].理化检验-物理分册,2025,61(11):58-62,5.
