ABS　T　R　A　C　T　Previous　studies　have　investigated　the　mechanical　behavior　of　steel　ring　restrainers　(SRRs)　under　monotonic　loading,　while　that　of　SRRs　under　cyclic　loading　is　unclear.　This　study　investigates　the　effects　of　configuration　dimensions　and　steel　grades　on　the　cyclic　behavior　of　the　SRRs　through　an　experiment　and　numerical　simula-tions.　An　experimental　study　on　six　SRR　specimens　was　conducted　under　cyclic　loading.　Then,　numerical　models　were　validated　by　the　experimental　results　and　further　employed　to　carry　out　an　extensive　parametric　analysis.　A　hysteretic　model　of　the　SRRs　and　corresponding　formulae　were　proposed.　Finally,　a　design　procedure　of　the　SRRs　was　presented.　The　results　show　that　the　proposed　SRR　has　much　higher　deformation　capacity　compared　with　conventional　restrainers　such　as　cable　restrainers　and　stoppers.　It　is　also　found　that　the　envelope　curve　under　cyclic　loading　is　consistent　with　the　force-displacement　curve　under　monotonic　loading.　The　unloading　and　reloading　stiffnesses　of　the　proposed　SRR　are　low　at　small　displacement　ranges,　while　increasing　significantly　as　the　displacement　increases.　They　close　to　the　peak　load　decreases　significantly,　and　a　subsequent　fracture　occurs　soon　after　the　peak　load　is　reached.　Moreover,　predictions　given　by　the　proposed　hysteretic　model　are　in　good　agreement　with　experimental　and　numerical　results.