In　order　to　study　the　mechanical　deformation　performance　of　prefabricated　double-sided　superimposed　utility　tunnel　side　wall　connected　by　spiral　stirrup　sleeve　bottom　joint　under　out　of　plane　load，two　full-scale　side　wall　specimens　connected　by　this　joint　were　tested　under　low　cyclic　reciprocating　loading　at　different　axial　compression　ratios，and　compared　with　two　cast-in-situ　specimens，The　effects　of　the　bottom　joint　of　the　spiral　stirrup　sleeve　and　the　vertical　axial　compression　ratio　on　the　seismic　deformation　performance　of　the　side　wall　of　the　utility　tunnel　were　preliminarily　revealed.　The　test　results　show　that　the　hysteretic　curves　of　composite　precast　specimens　and　cast-in-situ　specimens　are　relatively　full，and　have　a　good　seismic　energy　dissipation　capacity；　which　meet　the　seismic　deformation　design　requirements　of　the　fabricated　structure；　The　shear　deformation　of　the　upper　area　of　the　composite　assembly　specimens　are　higher　than　that　of　the　cast-in-situ　specimens，and　the　cracks　are　all　over　the　whole　height　range　of　the　wall，　which　has　good　out　of　plane　deformation　ability.　©　2024　Science　Press.　All　rights　reserved.