For　a　high-rise　structure　composed　of　a　shear-　and　a　flexural-type　subsystem,　its　seismic　performance　can　be　improved　as　the　rigid　link　between　the　subsystems　being　replaced　by　a　viscoelastic　connection　(VEC).　This　structural　system,　termed　viscoelastic　shear-flexural　(VeSF)　structure,　has　an　amplified　flexibility　and　an　enlarged　damping,　thus　exhibits　a　mitigated　acceleration　and　a　modified　displacement　response.　In　this　research,　a　novel　feasible　configuration　with　a　low　invasive　feature　to　attain　such　a　VeSF　structure　is　proposed.　The　proposal　decouples　the　rigid　link　between　the　shear-　and　the　flexural-type　subsystems　while　maintaining　the　latter＇s　ability　to　bear　the　gravity　load　of　the　floor.　An　elaborated　modelling　and　computation　lead　us　to　the　subsequent　findings:　(1)　the　acceleration　of　a　VeSF　structure　could　be　20-40%　smaller　than　that　of　a　conventional　structure,　and　such　a　reduction　gets　more　pronounced　as　the　stiffness　of　VEC　decreases　or　the　mass　on　the　sheartype　subsystem　increases;　(2)　the　drift　of　the　shear-type　subsystem　in　a　VeSF　structure　moderately　increases　at　the　bottom　while　remarkably　decreases　at　the　near-top　zone;　(3)　as　the　shear-type　subsystem　gets　stiffer,　the　acceleration-mitigation　effect　of　the　system　gets　weakened.　Eigenvalue　analyses　reveal　that　the　higher-order　modal　response,　which　contributes　significantly　to　the　acceleration　response　of　a　VeSF　structure,　is　notably　repressed.　The　response　of　the　fundamental　mode,　which　contributes　the　most　to　the　displacement　response,　is　barely　mitigated.　Thus,　the　VeSF　structure　is　better　at　controlling　the　acceleration　than　the　displacement.