Mainly,　the　classical　seismic　fragility　of　reinforced　concrete　bridges　is　calculated　based　on　the　parameter　such　as　the　cross-section　curvature　of　the　typical　piers,　for　which　the　evolutionary　process　of　the　dynamic　characteristics　and　the　global　performance　are　not　sufficiently　involved.　The　strategy　which　the　comprehensive　damage　assessment　is　realized　based　on　the　fragility　analysis　of　different　parts　of　the　bridge　is　proposed.　It　is　assumed　that　the　damage　type　and　the　degree　have　a　substantial　connection　with　the　difference　between　the　ideal　elastic　deformation　energy　and　the　actual　elastic-plastic　deformation　energy,　according　to　the　concept　of　energy　dissipation.　The　pier　damage　assessment　method　based　on　the　differential　value　of　energy　dissipation　is　presented.　The　global　multidimensional　bridge　fragility　analysis　method　based　on　multi-order　periods　is　suggested.　With　comprehensive　evaluation　method　in　fuzzy　mathematics,　combined　with　the　damage　analysis　based　on　bearing　displacement,　the　pier　damage　analysis　based　on　energy　and　the　global　damage　analysis　based　on　periods,　the　multiple　fuzzy　fragility　analysis　method　which　embodies　the　damage　states　from　detail　to　multi-level　is　established.　A　typical　RC　bridge　is　analyzed　by　multidimensional　incremental　dynamic　analysis　and　seismic　fragility　analysis　at　all　levels.　The　results　show　that　the　bridge　seismic　fragility　analysis　method　based　on　multiple　fuzzy　evaluations　can　represent　the　dynamic　characteristics　and　damage　evolution　process　of　the　components　and　the　total　bridge,　which　has　better　accuracy　and　feasibility.　©　2017,　Nanjing　Univ.　of　Aeronautics　an　Astronautics.　All　right　reserved.