龙滩河大桥稳定性及自振特性分析 |
AnalysisofStabilityandSelf-vibrationCharacteristicsofLongtanheBridge |
投稿时间:2015-07-12 |
中文关键词:上承式拱桥 拱肋 特征值屈曲分析 几何非线性屈曲分析 自振特性分析 |
英文关键词:archdeckbridge archrib eigenvaluebucklinganalysis geometricnonlinearbucklinga- nalysis self-vibrationcharacteristicsanalysis |
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中文摘要: |
龙滩河大桥为3×85m 上承式拱桥,桥宽9.5m。以其简化模型为基础,用有限元软 件对其进行了结构稳定分析和自振特性分析。稳定分析中用增量法考虑了几何非线性的影响, 结果表明拱的设计必须重视二阶效应。用 Lanczos法分析了自振特性,得出了一些对工程建设 有益的结论。 |
英文摘要: |
LongtanheBridgeisaarchdeckbridgewiththespanof3×85mandwidthof9.5m. Basedonthesimplified modeloftheLongtanhebridge,thestabilityandself-vibrationcharacteristics wereanalyzedinthispaperwithfiniteelementsoftware.Thegeometricnonlineareffectsareconsidered inthestabilityanalysiswithincrementmethod,andtheresultsillustratethatthesecond-ordereffect mustbeconsideredinthedesign.Theself-vibrationcharacteristicswereanalyzed withLanczos,and someconclusionsweregotusefulfortheengineeringconstruction. |
张晋媛.龙滩河大桥稳定性及自振特性分析[J].石家庄铁道大学学报(自然科学版),2016,(3):26-32. |
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