Precast　self-centering　segmental　bridge　piers　have　gained　significant　attention　in　bridge　construction.　Among　them,　development　of　the　energy　dissipation　devices　that　are　applicable　for　the　self-centering　bridge　piers　has　been　a　major　focus　over　the　past　three　decades.　This　study　develops　a　novel　post-tensioned　precast　segmental　bridge　piers　(SC-PSBPs),　incorporating　replaceable　external　auxetic　steel　shear　panel　dampers　(ASSPDs)　at　the　bottom　and　connecting　steel　plates　at　the　intermediate　segments.　The　seismic　behavior　of　the　SC-PSBPs　is　investigated　through　experiments　and　numerical　simulations.　Auxetic　metamaterials　are　utilized　to　develop　two　kinds　of　perforated　steel　plates,　including　elliptical　and　peanut-shaped　perforations,　for　the　ASSPDs.　Eight　SC-PSBP　specimens　are　tested　to　study　failure　patterns,　hysteresis　response,　residual　displacement,　segment　gap　opening　behavior,　and　local　response　of　steel　components.　Test　results　show　that　the　proposed　SC-PSBP,　equipped　with　unbonded　post-tensioning　(PT)　tendons　and　ASSPDs,　exhibits　stable　hysteresis　response　and　self-centering　capacity　with　minimal　concrete　damage.　Plastic　deformation　is　concentrated　in　the　ASSPDs,　while　the　intermediate　connecting　steel　plates　behave　elastically　throughout　the　loading　history.　A　numerical　model　is　developed　to　investigate　the　influence　of　design　parameters　on　the　hysteresis　behavior　of　SC-PSBPs.　Parametric　analyses　using　the　validated　FE　models　explore　the　seismic　behavior　of　SC-PSBPs　with　different　geometries　of　ASSPDs,　connecting　steel　plates,　and　initial　PT　forces.　Numerical　results　show　that　both　the　ASSPDs　and　the　connecting　steel　plates　are　imperative　to　achieve　the　desired　rocking　and　damage　concentration　mechanisms　of　SC-PSBPs.　The　numerical　findings　also　indicate　that　decreasing　the　porosity　of　ASSPDs　effectively　enhances　the　bearing　and　energy　dissipation　capacity　of　SC-PSBPs,　as　well　as　increases　their　residual　displacement.　©　2023　Institution　of　Structural　Engineers