The　socket　connection　has　been　considered　to　be　an　effective　connection　for　accelerated　bridge　construction　(ABC)　due　to　its　promising　advantages,　i.e.,　higher　construction　tolerance　rate,　simpler　connection　method,　easier　quality　control　method,　and　better　seismic　performance　when　the　socket　depth　is　sufficient.　To　further　facilitate　the　promotion　of　socket　connections,　a　novel　double-column　piers　system　with　socket　connection　was　proposed,　and　the　prefabricated　piers　and　adjacent　elements　are　connected　using　Ultra　High-Performance　Concrete　(UHPC)　grouting.　Three　1:3　scale　double-column　pier　specimens　using　novel　type　socket　connection,　ordinary　grouted　corrugated　duct　connection,　and　cast-in-place　connection,　respectively,　were　subjected　to　pseudo-static　tests,　aimed　to　compare　the　effects　of　connection　methods　on　the　damage　development,　failure　mode,　strain　distribution,　and　seismic　performance　of　the　double-column　pier.　The　test　results　indicate　that　all　three　double-column　piers　with　three　different　connection　forms　exhibit　good　seismic　performance,　with　the　failure　mode　being　the　fracture　of　the　longitudinal　rebars　of　the　piers.　Compared　with　the　piers　fabricated　with　the　other　two　connection　forms,　the　piers　with　socket　connection　feature　less　residual　displacement,　and　the　damage　is　mainly　concentrated　at　the　bottom　of　the　pier.　Additionally,　numerical　analysis　models　were　devel-oped　and　validated　for　the　socket-connected　double-column　piers　to　facilitate　further　research　in　this　area.