Regarding　the　damage　accumulation　of　steel,　and　based　on　the　material　subroutine　using　ABAQUS,　the　response　analysis　of　a　single-layer　spherical　reticulated　shell　under　severe　earthquakes　was　studied,　through　simulating　the　component＇s　stiffness　variation　process　caused　by　fiber　fracture.　The　results　show　that　single-layer　spherical　reticulated　shell　failure　began　from　the　unit　body　damage,　and　deteriorated　gradually.　The　evolution　from　structure　damage　to　failure　was　discussed　to　establish　the　failure　mode　of　the　singe-layer　special　reticulated　shell.　With　systematic　investigation　on　the　single-layer　spherical　shell　ultimate　bearing　capacity　under　different　effect　time　and　different　PGA　conditions,　this　paper　concludes　that　the　amplitude　of　seismic　peak　and　effect　time　need　to　be　taken　into　consideration　in　evaluating　the　ultimate　bearing　capacity　of　post-earthquake　structure.　And　these　findings　might　contribute　significantly　to　the　development　of　post-earthquake　safety　evaluation.　©,　2014,　Tianjin　University.　All　right　reserved.