Due　to　the　limitation　of　output　and　size　of　loading　systems,　traditional　soil　structure　interaction　testing　can　only　be　used　in　the　reduced　scale　models.　Experimental　facilities　are　limited　for　testing　the　seismic　behavior　of　soil　structure　interactions　for　large　and　long　structures　such　as　long-span　spatial　structures　and　bridges.　In　Real-time　Dynamic　Substructure　(RTDS)　testing,　the　part　which　cannot　be　modeled　is　tested　physically　and　the　rest　part　is　simulated　numerically.　The　two　parts　work　together　so　that　it　can　simulate　the　whole　structure.　In　this　paper,　the　soil　structure　interaction　was　simulated　through　RTDS.　A　whole　structure　model　and　a　hybrid　dynamic　substructure　model　were　established　and　verified　experimentally　and　numerically.　The　seismic　behavior　of　continuous　rigid　frame　bridges　and　long-span　continuous　rigid　frame　high　pier　bridges　with　consideration　of　the　soil　structure　interaction　was　discussed　respectively,　using　the　substructuring　testing　methods　developed　by　this　paper.　The　results　demonstrate　the　value　of　the　method.　©　2017,　Engineering　Mechanics　Press.　All　right　reserved.