In　order　to　study　the　structural　dynamic　response　and　dynamic　load　capacity　of　bridge-along　cable　under　typhoon　load,　in　this　paper,　the　cable　under　two　laying　environments,　including　the　steel　box　girder　and　steel　platform,　are　taken　as　the　research　object.　Shiyuan　typhoon　spectrum　and　harmonic　superposition　method　are　adopted　to　obtain　the　wind　speed　time　history　curves　corresponding　to　different　scales　of　typhoon　wind　force,　then　the　wind-induced　pulsating　displacement　of　steel　box　girder　and　steel　platform　is　calculated　by　using　the　wind　speed　time　history　curve.　The　electromagnetic-thermal-structure　coupling　model　is　established,　and　the　obtained　pulsating　displacement　under　typhoon　load　is　applied　to　the　cable　as　a　boundary　condition　to　obtain　its　dynamic　response　characteristics.　The　eccentricity　of　XLPE　insulation　is　used　as　the　evaluation　index　of　the　current-carrying　capacity　of　cable　under　different　scales　of　typhoon　wind　force　and　different　laying　environments.　The　simulation　results　show　that　the　maximum　stress　amplitude　on　the　metal　layer　occurs　near　the　clamp　during　cables　are　forced　to　move　under　typhoon　load.　The　higher　the　typhoon　wind　force,　the　lower　the　allowable　current-carrying　capacity.　Under　wind　force　10,　the　current-carrying　capacity　is　not　affected　by　the　typhoon　weather;　under　wind　force　11,　the　current-carrying　capacity　dropped　by　17.2%;　under　wind　force　12,　the　current-carrying　capacity　dropped　by　47.7%;　under　wind　force　13,　the　cables　are　not　recommended　to　work.　The　research　results　provide　theoretical　guidance　for　assessing　the　power　supply　reliability　of　bridge-along　cables　under　typhoon　disasters.　©　Published　under　licence　by　IOP　Publishing　Ltd.