This　paper　proposes　a　new　post-tensioned　(PT)　precast　bridge　column　(PBC)　with　a　socket　connection.　PT　steel　tendons　and　unbonded　steel　rebars　provide　self-centering　capability　and　energy-dissipating　capacity,　respectively.　Because　the　PT　tendons　are　off-site　anchored,　they　can　effectively　shorten　the　on-site　working　time　and　improve　the　safety　and　tolerance　of　construction.　After　describing　the　configuration　and　mechanism　of　the　PBC,　the　analytical　equations　governing　its　cyclic　behavior　are　derived.　In　the　quasi-static　cyclic　loading　test　results,　five　PBC　specimens　and　one　cast-in-place　(CIP)　bridge　column　are　designed,　based　on　the　criteria　that　their　lateral　＂yield＂　strengths　are　identical,　i.e.　the　concept　of　equivalent　lateral　force　design.　The　results　show　that　the　PBC　specimens　realized　the　targeted　lateral　strength　and　exhibited　self-centering　damping　behavior.　Compared　with　the　test　data,　the　errors　of　the　＂yield＂　and　ultimate　strengths　predicted　by　the　analytical　equations　were　-9.3%　and　8.0%,　respectively.　The　PBC　specimens　remained　nearly　intact　throughout　the　tests,　although　minor　cracks　were　detected　in　the　concrete.　In　contrast,　spalling　of　concrete　and　buckling　of　rebars　were　observed　in　the　CIP　specimen.　The　comparisons　between　the　PBC　specimens　indicated　that　the　novel　bridge　column　could　maintain　self-centering　capability　and　achieve　the　largest　damping　capacity　when　the　lateral　force-resisting　contribution　ratio　of　energy-dissipating　steel　rebars　is　35%,　the　PT　tendons　are　prestressed　to　35%　of　ultimate　stress　with　a　reinforcement　ratio　of　0.35%,　and　the　embedded　depth　is　0.7　times　the　width　of　the　column.