我国大跨径钢箱梁桥正交异性板疲劳损伤研究现状.pdf

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1、桥梁建设２０１７年第４７卷第４期（总第２４５期）６０BridgeConstruction，Vol．４７，No．４，２０１７（TotallyNo．２４５）文章编号：１００３－４７２２（２０１７）０４－００６０－０６我国大跨径钢箱梁桥正交异性板疲劳损伤研究现状杨仕力，施洲（西南交通大学土木工程学院，四川成都６１００３１）摘要：针对我国大跨径公路及铁路钢箱梁桥中正交异性板的疲劳损伤问题，总结２０世纪８０年代以来我国在该课题上的研究成果，其主要集中在疲劳损伤机理等基础理论、疲劳损伤和疲劳寿命评估方法以及疲劳车辆

2、荷载模型等方面。结合相关研究成果，对今后正交异性桥面结构在开裂机理分析、研究方法、检测加固等方面的发展提出相关建议与展望：优化构造细节，发展新型结构和改进制造工艺，以减小运营过程中开裂的机率；改进疲劳研究方法、试验手段和疲劳寿命评估方法，以提高疲劳性能研究的精度；针对已开裂的桥梁，进一步探索快速有效的检测加固手段。关键词：钢箱梁桥；正交异性桥面板；疲劳寿命；疲劳损伤；荷载谱；结构设计；检测加固；试验中图分类号：U４４３．３；U４４１．４文献标志码：ACurrentResearchofFatigueDam

3、ageinOrthotropicDeckPlatesofLongSpanSteelBoxGirderBridgesinChinaYANGShili，SHIZhou‐（SchoolofCivilEngineering，SouthwestJiaotongUniversity，Chengdu６１００３１，China）Abstract：Inviewofthefatiguedamageproblemshavingoccurredintheorthotropicdeckplatesofthelongspanhigh

4、wayandrailwaysteelboxgirderbridgesinChina，theresearchachieve‐mentsofChinaontheproblemssincethe１９８０sarereviewedandsummarized．TheresearchesinChinamainlyfocusonthefundamentaltheoriesofthefatiguedamagemechanism，theevaluationmethodsforthefatiguedamageandfatig

5、uelivesandthemodelsofthefatiguevehicleloads．Withreferencetotherelevantresearchachievements，thefuturedevelopmentinaspectsofthemecha‐nismanalysis，researchmethods，inspectionandreinforcementofthefatiguecrackinginthedeckplatesisaccordinglyproposedandprospecte

6、d．Specifically，thestructuraldetailsofthedeckplatesshouldbeoptimized，thenewstructuresshouldbedevelopedandthemanufacturingworkmanshipshouldbeimprovedsoastominimizethecrackingprobabilityofthedeckplatesofthebridgesinoperation．Thefatigueresearchmethods，testin

7、gmeansandthefatiguelifeevaluationmethodsshouldbeimprovedsoastoenhancetheaccuracyofthefatigueperformanceresearches．Forthedeckplatesofthebridgeswiththefatiguecracking，therapidandeffectiveinspectionandrein‐forcementmeansshouldbefurtherexplored．Keywords：stee

8、lboxgirderbridge；orthotropicdeckplate；fatiguelife；fatiguedamage；loadspectrum，structuraldesign，inspectionandreinforcement；testing1引言世界前列，尤其是大跨径钢箱梁悬索桥、斜拉桥的建我国大跨径钢箱梁桥的建设规模及数量已处于设规模及数量在世界各国中遥遥领先。钢箱梁桥呈收稿日期：２０１６－０６－０２基金项目：中国铁路总公