索承式桥梁吊索钢丝腐蚀疲劳寿命评估
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摘要
根据吊索镀锌钢丝腐蚀疲劳破坏特点,把镀锌钢丝腐蚀疲劳纹形成和扩展过程分解成镀锌层腐蚀失效、蚀坑萌生、蚀坑形成、短裂纹扩展、长裂纹扩展和断裂破坏等阶段,建立各阶段时间表达式,得到镀锌钢丝疲劳寿命表达式,提出基于断裂力学的吊索钢丝腐蚀疲劳寿命评估研究结果方法。通过算例分析复杂运营条件下腐蚀环境和应力幅等因素对吊索钢丝腐蚀疲劳寿命的影响,研究结果表明:吊索钢丝腐蚀疲劳寿命主要由钢丝镀锌层腐蚀、蚀坑发展和短裂纹扩展等3个阶段组成,为了准确地评估吊索腐蚀疲劳寿命,需要掌握大桥的运营环境和交通荷载。
According to the fatigue damage characteristics of galvanized wire,the propagation process is decomposed into 7stages,including galvanized layer failure,matrix corrosion pit initiation,short crack propagation,long crack propagation and fracture damage stage.Then the expression of time in different stages and the galvanized wire fatigue life expression is established,and the evaluation method of corrosion fatigue is putted forward based on fracture mechanics.Finally through the case analysis of complex factors such as operation under the condition of corrosion environment and stress amplitude,the impact on the wire corrosion fatigue life is analyzed.The results show that the corrosion fatigue life of wire is mainlycomposed of steel galvanizing layer corrosion,pit development and short crack extension,and in order to accurately assess the corrosion fatigue life of wire,the operating environment and traffic load need to be grasped.
According to the fatigue damage characteristics of galvanized wire,the propagation process is decomposed into 7stages,including galvanized layer failure,matrix corrosion pit initiation,short crack propagation,long crack propagation and fracture damage stage.Then the expression of time in different stages and the galvanized wire fatigue life expression is established,and the evaluation method of corrosion fatigue is putted forward based on fracture mechanics.Finally through the case analysis of complex factors such as operation under the condition of corrosion environment and stress amplitude,the impact on the wire corrosion fatigue life is analyzed.The results show that the corrosion fatigue life of wire is mainlycomposed of steel galvanizing layer corrosion,pit development and short crack extension,and in order to accurately assess the corrosion fatigue life of wire,the operating environment and traffic load need to be grasped.
引文
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[22]刘光磊.石油钻柱疲劳腐蚀失效机理及防治措施研究[D].山东东营:中国石油大学,2007.LIU G L.Study on weary petroleum drill post corrosion loses efficacy mechanism and prevention and cure measure[D].Dongying,Shandong:China University of Petroleum,2007.(in Chinese)
[23]ZAMAN K B M Q,WEI R P.Probability approach for corrosion and corrosion fatigue life[J].Aiaa Journal,1994,32(10):2073-2079.
[24]ZAMAN K B M Q,WEI R P.A probability model for the growth of corrosion pits in alumni um alloys induced by constituent particles[J].Engineering Fracture Mechanics,1998,59(3):305-325.
[25]乔燕,李爱群,缪长青,等.索承式桥梁腐蚀吊索安全性能评估[J].土木建筑与环境工程,2015,37(4):28-35.QIAO Y,LI A Q,MIAO C Q,et al.Assessment on safety performance of corroded cable for cablesupported bridge[J].Journal of Civil,Architectural&Environmental Engineering,2015,37(4):28-35.(in Chinese)
[26]DOLLEY E J,WEI R P.Importance of chemically short-crack-growth on fatigue life[C]//2nd Joint NASA/FAA/DoD Conference on Aging Aircraft,Williamsburg,VA,1998:679-687.
[27]唐雪松,赵小鹏.疲劳裂纹扩展行为的跨尺度分析方法[J].工程力学,2012,29(10):20-26.TANG X S,ZHAO X P.Multiscaling analysis approach of fatigue crack growth behavior[J].Engineering Mechanics,2012,29(10):20-26.(in Chinese)
[28]赵小鹏.大跨度斜拉桥拉索钢丝跨尺度疲劳断裂行为研究[D].长沙:长沙理工大学,2011.ZHAO X P.Research of multiscaling fatigue fracture behavior of cable steel wires in a long-span cable-stayed bridge[D].Changsha:Changsha University of Science and Technology,2011.(in Chinese)
[29]MAHMOUD K M.Fracture strength for a high strength steel bridge cable wire with a surface crack[J].Theoretical and Applied Fracture Mechanics,2007,48:152-160.
[30]KONDO Y.Prediction of fatigue crack initiation life based on pit growth[J].Corrosion,1998,45(1):7-11.
[31]任克亮,吕国志,张有宏.老龄结构分析中腐蚀坑与等效裂纹间的量化关系[J].强度与环境,2006,33(2):50-57.REN K L,LYU G Z,ZHANG Y H.The correlation between corrosion pit with equivalent initial surface crack[J].Structure&Environment Engineering,2006,33(2):50-57.(in Chinese)
[2]HAMILTON H R,BREEN J E,FRANK K H.Investigation of corrosion protection systems for bridge stay cables:Research Report No.1264-3F[R].Center for Transportation Research,Bureau of Engineering Research,University of Texas at Austin,1995.
[3]李宏江,王江,张永明,等.天津永和斜拉桥换索后的索力调整[J].公路交通科技,2008,25(10):79-83.LI H J,WANG J,ZHANG Y M,et al.Cable force adjustment after cable replacement for tianjin yonghe cable-stayed bridge[J].Journal of Highway Transportation Research and Development,2008,25(10):79-83.(in Chinese)
[4]周诚华,梅秀道.南昌市八一大桥斜拉桥换索工程施工监控[J].世界桥梁,2011(2):73-76.ZHOU C H,MEI X D.Construction monitoring and control of cable replacement for cable-stayed bridge of bayi bridge in Nanchang City[J].World Bridges,2011(2):73-76.(in Chinese)
[5]谢福君,廖龙辉.衡山湘江公路大桥换索方案研究[J].公路,2013(4):21-24.XIE F J,MIAO L H.Research on scheme of cable replacement of Hengshan-Xiangjiang highway bridge[J].Highway,2013(4):21-24.(in Chinese)
[6]朱劲松,肖汝诚.大跨度斜拉桥拉索安全性分析方法研究[J].土木工程学报,2006,39(9):74-79.ZHU J S,XIAO R C.A study on the safety assessment method for stay cables of long-span cable-stayed bridges[J].China Civil Engineering Journal,2006,39(9):74-79.(in Chinese)
[7]ELACHACHI S M,BREYSSE D,YOTTE S,et al.A probabilistic multi-scale time dependent model for corroded structural suspension cables[J].Probabilistic Engineering Mechanics,2006,21(3):235-245.
[8]马小利,王立彬,丁盛.平行钢索的锈蚀时变失效概率分析[J].工程力学,2012,29(4):210-216.MA X L,WANG L B,DING S.Time-dependent failure probability analysis of corroded parallel wire cable[J].Engineering Mechanics,2012,29(4):210-216.(in Chinese)
[9]SHI P,MAHADEVAN S.Damage tolerance approach for probabilistic pitting corrosion fatigue life prediction[J].Engineering Fracture Mechanics,2001,68:1493-1507.
[10]李仲,吕国志,葛森.一种预测蚀坑腐蚀疲劳寿命的概率模型[J].机械强度,2004,26(Sup):226-228.LI Z,LYU G Z,GE S.Probabilistic method of pitting corrosion fatigue life[J].Journal of Mechanical Strength,2004,26(Sup):226-228.(in Chinese)
[11]徐可君,江龙平,隋育松.预测腐蚀疲劳寿命的概率方法[J].机械强度,2003,25(2):229-232.XU K J,JIANG L P,SUI Y S.Probability approach for prediction of corrosion fatigue life[J].Journal of Mechanical Strength,2003,25(2):229-232.(in Chinese)
[12]CHEN G S,WAN K C,GAO M,et al.Transition from pitting to fatigue crack growth-modeling of corrosion fatigue crack nucleation in a 2024-T3aluminum alloy[J].Materials Science and Engineering,1996,A219:126-132.
[13]徐宏.桥梁拉(吊)索损伤后力学分析及安全评价[D].西安:长安大学,2008.XU H.Mechanical analysis and safety evaluation of bridge damaged cable[D].Xi'an:Chang'an University,2008.(in Chinese)
[14]PIASCIK R S,WILLARD S A.The growth of small corrosion fatigue cracks in alloy 20244[J].Fatigue&Fracture of Engineering Materials&Structures,1994,17:1247-1259.
[15]NEWMAN J C.A review of modeling small-crack behavior and fatigue life predictions for aluminum alloys[J].Fatigue&Fracture of Engineering Materials&Structures,2010,17(4):429-439.
[16]KAYNAK C,ANKARA A,BAKER T J.Effects of short cracks on fatigue life calculations[J].International Jouranl of Fatigue,1996,18(1):25-31.
[17]CZARNECKI A A,ANDRZEJ S.Time-variant reliability profiles for steel girder bridges[J].Structural Safety,2008,30:49-64.
[18]曹楚南.中国材料的自然环境腐蚀[M].北京:化学工业出版社,2008.CAO C N.Corrosion environment of chinese material[M].Beijing:Chemical Industry Press,2003.(in Chinese)
[19]镀锌钢丝锌层质量试验方法:JGBT 2973—2004[S].北京:中国标准出版社,2004.Zinc coated steel wire test method for gravimetric determination of zinc coating:JGBT 2973-2004[S].Beijing:China Standard Publishing House,2004.(in Chinese)
[20]桥梁缆索用热镀锌钢丝:GB/T 17101—2008[S].北京:中国标准出版社,2008.Hot-dip galvanized steel wires for bridge cables:GB/T17101-2008[S].Beijing:China Standard Publishing House,2008.(in Chinese)
[21]JANIK-CZACHO1R M.An assessment of the processes leading to pit nucleation on iron[J].Journal of Electrochemical Society,1981,128(12):513-519.
[22]刘光磊.石油钻柱疲劳腐蚀失效机理及防治措施研究[D].山东东营:中国石油大学,2007.LIU G L.Study on weary petroleum drill post corrosion loses efficacy mechanism and prevention and cure measure[D].Dongying,Shandong:China University of Petroleum,2007.(in Chinese)
[23]ZAMAN K B M Q,WEI R P.Probability approach for corrosion and corrosion fatigue life[J].Aiaa Journal,1994,32(10):2073-2079.
[24]ZAMAN K B M Q,WEI R P.A probability model for the growth of corrosion pits in alumni um alloys induced by constituent particles[J].Engineering Fracture Mechanics,1998,59(3):305-325.
[25]乔燕,李爱群,缪长青,等.索承式桥梁腐蚀吊索安全性能评估[J].土木建筑与环境工程,2015,37(4):28-35.QIAO Y,LI A Q,MIAO C Q,et al.Assessment on safety performance of corroded cable for cablesupported bridge[J].Journal of Civil,Architectural&Environmental Engineering,2015,37(4):28-35.(in Chinese)
[26]DOLLEY E J,WEI R P.Importance of chemically short-crack-growth on fatigue life[C]//2nd Joint NASA/FAA/DoD Conference on Aging Aircraft,Williamsburg,VA,1998:679-687.
[27]唐雪松,赵小鹏.疲劳裂纹扩展行为的跨尺度分析方法[J].工程力学,2012,29(10):20-26.TANG X S,ZHAO X P.Multiscaling analysis approach of fatigue crack growth behavior[J].Engineering Mechanics,2012,29(10):20-26.(in Chinese)
[28]赵小鹏.大跨度斜拉桥拉索钢丝跨尺度疲劳断裂行为研究[D].长沙:长沙理工大学,2011.ZHAO X P.Research of multiscaling fatigue fracture behavior of cable steel wires in a long-span cable-stayed bridge[D].Changsha:Changsha University of Science and Technology,2011.(in Chinese)
[29]MAHMOUD K M.Fracture strength for a high strength steel bridge cable wire with a surface crack[J].Theoretical and Applied Fracture Mechanics,2007,48:152-160.
[30]KONDO Y.Prediction of fatigue crack initiation life based on pit growth[J].Corrosion,1998,45(1):7-11.
[31]任克亮,吕国志,张有宏.老龄结构分析中腐蚀坑与等效裂纹间的量化关系[J].强度与环境,2006,33(2):50-57.REN K L,LYU G Z,ZHANG Y H.The correlation between corrosion pit with equivalent initial surface crack[J].Structure&Environment Engineering,2006,33(2):50-57.(in Chinese)