The　horizontal　pulse　motions　of　acceleration　featured　by　long　period,　short　duration　and　high　energy　in　near-fault　ground　motions　would　exert　the　adverse　impacts　on　the　seismic　performance　of　the　long-period　base-isolated　high-rise　structures,　resulting　in　the　excessive　deformation　of　the　LRB.　The　shear-compression　failure　of　the　isolation　bearing　would　be　caused　under　the　cooperative　action　of　large　surface　pressure　and　the　excessive　deformation.　Furthermore,　the　soil-structure　interaction　(SSI)　would　result　in　the　dynamic　coupling　effect,　which　may　further　amplify　the　seismic　response　of　the　isolated　structure.　To　this　end,　a　new-type　composite　isolation　system　that　combined　slide　bearings　and　reset　devices　is　presented,　in　which　the　slide　plate　bearings　is　used　to　resist　large　vertical　load,　and　because　of　no　bearing　vertical　load　the　reset　devices　get　greater　deformation　capacity　and　act　as　a　self-reset　function　of　the　shock　isolation　layer.　Then,　the　impacts　of　near-fault　pulse　ground　motions　on　the　base-isolated　high-rise　structures　are　revealed,　and　the　damage　mechanism　of　the　isolation　system　is　examined.　Further,　based　on　the　sway-rocking　model,　the　effects　of　different　site　types　and　different　ground　motion　types　on　the　dynamic　response　of　the　isolation　system　are　analyzed.　The　results　show　that　the　excessive　deformation　of　the　LRB　system　subjected　to　near-fault　rarely　ground　motions　are　caused,　resulting　in　the　failure　of　the　lead　rubber　system.　The　new-type　composite　isolation　system　can　ensure　the　effectiveness　of　isolation　subjected　to　near-fault　pulse　ground　motions,　and　has　good　seismic　absorption　performance　which　is　worse　than　that　under　ordinary　ground　motion.　For　Ⅲ　and　Ⅳ　sites,　the　interstory　drift　ratios　increase　obviously　with　the　soil　softening　because　of　the　SSI　effect　weakening　the　stiffness　of　the　seismic　isolation　system.　©　2019,　Nanjing　Univ.　of　Aeronautics　an　Astronautics.　All　right　reserved.