To　enhance　the　lateral　bearing　capacity　and　resilience　of　precast　segmented　bridge　piers　(PSBPs),　a　novel　inner　column　(IC)　socket　connection　at　the　bottom　of　the　pier　was　proposed.　The　performance　of　the　joint　of　the　precast　column　and　footing　block　determines　the　lateral　bearing　capacity　of　the　pier　and　the　bridge.　Therefore,　the　joint　adopts　high-performance　concrete　(HPC)　and　engineered　cementation　composite　(ECC)　ICs.　The　cyclic　performance　of　IC　socket　connection　under　pseudo-static　tests　with　constant　vertical　loading　was　investigated.　Numerical　models　against　four　bridge　pier-tested　specimens　cited　in　the　references　were　developed　utilizing　the　OpenSees　platform　and　ABAQUS　software　to　verify　modeling　accuracy.　Accordingly,　three　piers,　two　PSBPs　with　varying　IC　materials,　and　one　standard　PSBP　without　an　IC　were　studied　to　confirm　the　effectiveness　of　IC　in　the　PSBP　system.　Then,　parametric　analyses　of　their　impact　on　PSBPs　with　IC　were　conducted,　examining　variables　of　the　height　ratio,　cross-section　area,　concrete　strength,　reinforcement　ratio,　and　reinforcement　yield　strength　ratios　of　the　IC　in　addition　to　vertical　loading　ratio　and　post-tension　tendon　area.　The　findings　indicate　that　existing　the　IC　improves　PSBP　performance　in　terms　of　hysteretic　behavior,　ductility,　energy　dissipation,　and　stiffness　while　ensuring　self-centering　behavior　is　within　the　acceptable　range.　Furthermore,　a　well-designed　IC　can　effectively　regulate　the　lateral　resistance　capacity　and　resilience　performance　of　PSBPs.　For　PSBP　construction,　the　IC　socket　connection　utilizing　modern　materials　is　an　effective　connector　and　versatile　for　future　bridge　structure　applications.　©　2024　Institution　of　Structural　Engineers