中国铁道科学2026，Vol.47Issue(3)：174-184,11.DOI:10.3969/j.issn.1001-4632.2026.03.15
腐蚀环境下吊索的2 100 MPa级高强钢丝拉弯疲劳性能研究
Tensile-Bending Fatigue Performance of 2 100 MPa High Strength Steel Wire for Sling under Corrosive Environment
摘要
Abstract
Aiming at the 2 100 MPa grade high strength steel wire bridge sling,the tensile bending fatigue performance of high strength steel wire under corrosive environment was studied by means of experiment and numerical simulation.The tensile-bending fatigue test of 2 100 MPa high strength steel wire under corrosive environment was carried out.The influence of stress amplitude,deflection angle and load frequency on fatigue life was studied by numerical simulation.The Weibull distribution of the tensile-bending fatigue life of high strength steel wire under corrosive environment based on the actual stress characteristics was proposed.The parameters were estimated and verified according to the test results,and the expression of the stress-cycle number curve with different probability guarantee rates was further obtained.The results show that:the distribution of corrosion pits in the corrosive environment is random.When the location of corrosion pits coincides with high stress areas,it accelerates the initiation and propagation of cracks.In the corrosive environment,the fracture crack propagation zone of the tension-bending fatigue steel wire exhibits distinct circular arc-shaped stripes.In the corrosive environment,the tension-bending fatigue life of high-strength steel wire decreases with the increase of stress amplitude and deflection angle.The bending stress caused by the deflection angle can reduce the fatigue life of high-strength steel wire by up to 80％or more.The stress-cycle number curve expressions with different probability assurance rates can well reflect the fatigue performance of high-strength steel wire in the corrosive environment.关键词
桥梁/吊索/高强钢丝/腐蚀环境/拉弯疲劳试验/疲劳性能/疲劳寿命Key words
Bridge/Sling/High strength steel wire/Corrosion environment/Tension bending fatigue test/Fatigue performance/Fatigue life分类
交通工程引用本文复制引用
肖林,严李琪,张鸿洋,柳青,卫星,万田保,胡秀成..腐蚀环境下吊索的2 100 MPa级高强钢丝拉弯疲劳性能研究[J].中国铁道科学,2026,47(3):174-184,11.基金项目
国家重点研发计划项目(2022YFB3706703) （2022YFB3706703）
