Multicell　concrete-filled　steel　tube　(CFST)　columns　with　excellent　mechanical　performance　have　been　used　in　super　high-rise　buildings　in　recent　years.　According　to　the　requirements　of　a　265-m　tall　building,　the　double-cell　CFST　columns　with　an　innovative　cross　section　of　table　tennis　racket　were　applied.　Hence,　six　columns　were　designed　according　to　the　prototype　columns　and　subjected　to　low-frequency　cyclic　loading.　The　impacts　of　different　shear-span　ratios　(SSRs),　axial　load　ratios　(ALRs),　and　steel　ratios　on　the　seismic　behavior　were　elaborated　and　clarified.　The　test　results　indicated　that　the　seismic　performance　varied　in　different　loading　directions　owing　to　the　asymmetric　cross　section,　and　the　columns　performed　better　in　the　positive　loading　direction　resulted　from　earlier　and　more　sufficient　confinement　of　the　circular　steel　tube,　which　was　also　reflected　by　the　measured　strain　development.　With　SSR　deceasing　from　2.5　to　1.7,　earlier　and　more　severe　damage　was　recorded.　The　resisting　capacity　and　stiffness　were　significantly　improved　at　a　cost　of　ductility　loss.　Increasing　ALR　from　0.2　to　0.4　brought　about　more　damage　and　worse　deformability.　However,　a　proper　increase　in　axial　load　was　beneficial　to　the　resisting　capacity　and　stiffness,　and　its　influence　on　the　restoration　capacity　was　associated　with　SSR.　Increasing　the　steel　ratio　(by　33.36%)　could　effectively　postpone　and　alleviate　the　local　buckling　of　steel　tube,　thereby　comprehensively　improving　the　seismic　performance.　A　finite　element　(FE)　analysis　of　such　columns　was　performed　to　carry　out　the　damage　evolution　and　parametric　study,　and　provide　references　for　their　application　in　practical　engineering.　©　2024　Elsevier　Ltd