Seismic　resilient　structures　with　low　structural　damage　and　self-centering　behavior　after　an　earthquake　are　focus　issues　of　current　earthquake　engineering.　Unbonded　pretensioned　rocking　columns　offer　advantages　for　accelerated　bridge　construction　in　seismic　regions,　which　utilize　column-uplifting　mechanisms,　high　strength　post　tensioning,　and　replaceable　energy　dissipation　devices　to　enhance　seismic　performance　and　resilience.　The　experiment　of　three　1:3　scale　unbonded,　post-tensioned　rocking　bridge　bents　with　different　types　of　external　replaceable　energy　dissipation　devices　subjected　to　quasi-static　loading　protocols,　were　carried　out　according　to　practical　engineering　demand　in　high-intensity　earthquake　regions.　An　improved　analytical　model　was　proposed　for　predicting　the　force-displacement　relationship　of　the　post-tensioned　rocking　bridge　bent　systems　considering　the　neutral　axis　depth.　Minimal　physical　damage　was　observed　for　the　post-tensioned　rocking　bridge　bent　systems,　which　exhibit　good　energy　dissipation　and　self-centering　behavior.　Especially,　the　external　replaceable　buckling-restrained　plates　dissipaters　can　be　easily　replaced　if　severely　damaged　subjected　to　higher　than　expected　ground　motions.　The　satisfactory　analytical　and　experimental　comparisons　are　presented　as　a　validation　of　the　reliability　for　the　high-performance　seismic-resistant　bridge　bent　systems　and　the　modelling　techniques　in　this　study.