铁路跨线钢箱梁人行天桥舒适度评价与振动控制分析

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1、percentagepoints.Onbasisofthisarticle,itcanberecommendedthatthedynamiccheckingforfootbridgewith30meters’spanshouldbecarriedout,thespanof50metresormore,thedampingmeasuresshouldalsobeconsidered;proposedbasedontheequivalentverticalaccelerationcomfortevaluationandannoyanceratebasedontheevalu

2、ationcriteria;comparingthetwocommonvibrationcontrolmeasures,theadditionofthedamperdampingeffectissuperior.Inthisarctical,somereferencesforfootbridgecomfortevaluationsandvibrationcontrolareprovidedreflectingitspracticalvalue.Keywords:cross-linebridges,steelboxgirder,dynamicresponse,comfor

3、t,vibrationcontrol,troublerate,tunedmassdamper·III·目录第一章绪论..............................................................................................................................11.1研究的背景和意义............................................................................................

4、..........11.1.1中国铁路发展及跨线人行天桥建设现状.......................................................11.1.2人行天桥的振动问题.......................................................................................21.2国内外研究现状.......................................................................................

5、...................31.2.1人行荷载模型研究...........................................................................................41.2.2荷载激励下的振动研究...................................................................................81.2.3人行天桥的舒适度研究.................................................

6、..................................91.2.4人行天桥振动控制研究.................................................................................101.3本文的主要研究内容................................................................................................11第二章人行天桥的有限元静力分析..............................

7、......................................................132.1工程概况....................................................................................................................132.1.1海晏站旅客跨线天桥概况...........................................................................