简介：Therearetwotypesoffloatingbridgesuchasdiscrete-pontoonfloatingbridgesandcontinuous-pontoonfloatingbridges.Analyticalmodelsofbothfloatingbridgessubjectedbymovingloadsarepresentedtostudythedynamicresponseswithhydrodynamicinfluencecoefficientsfordifferentwaterdepths.Thebeamtheoryandpotentialtheoryareintroducedtoproducethemodels.ThehydrodynamiccoefficientsanddynamicresponsesofbridgesareevaluatedbytheboundaryelementmethodandbytheGalerkinmethodofweightedresiduals,respectively.Consideringcausalrelationshipbetweenthefrequenciesoftheoscillationoffloatingbridgesandtheaddedmasscoefficients,aniterationmethodisintroducedtocomputehydrodynamicfrequencies.Theresultsindicatethatwaterdepthhaslittleinfluenceuponthedynamicresponsesofbothtypesoffloatingbridges,sothattheeffectofwaterdepthcanbeneglectedduringthecourseofdesigningfloatingbridges.
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