The　layers　of　the　prestressed　cable-strut　system　of　the　loop-free　suspen-dome　are　relatively　tedious,　which　affects　the　overall　mechanical　performance　and　causes　certain　difficulties　to　the　construction,　and　needs　to　be　optimized　reasonably.　Taking　a　60　m-span　loop-free　suspen-dome　in　a　gymnasium　as　an　example,　the　effect　of　cable　removal　on　the　static　performance　of　the　structure　was　studied.　According　to　the　number　of　layers　in　the　prestressed　cable-strut　system　in　the　original　structure,　the　influence　of　the　cable　removal　schemes　on　the　total　strain　energy　of　the　reticulated　shell,　the　maximum　vertical　displacement,　and　the　structural　bearing　capacity　was　studied　to　determine　the　optimal　cable　removal　scheme.　The　static　performance　of　the　optimal　cable　removal　scheme　was　analyzed　parametrically,　and　the　influences　of　the　height　of　the　strut,　the　cable　load,　and　the　initial　geometric　imperfection　on　the　structural　stiffness　and　the　bearing　capacity　were　studied.　The　results　show　that　the　closer　the　cable　removal　position　is　to　the　center,　the　less　effect　on　the　total　strain　energy　of　the　reticulated　shell,　the　smaller　the　weakening　of　the　structural　stiffness　and　bearing　capacity,　and　the　less　steel　is　saved.　The　removal　of　the　third　layer　has　little　effect　on　the　total　strain　energy　of　the　reticulated　shell,　the　structural　stiffness　and　the　bearing　capacity.　It　is　recommended　to　give　priority　to　the　removal　of　the　third　layer　during　optimization.　The　increase　in　the　height　of　the　struts　and　the　cable　loads　in　the　first　layer　can　significantly　increase　the　overall　structural　stiffness,　with　little　effect　on　the　bearing　capacity　and　a　greater　influence　on　the　failure　mode.　The　change　in　the　height　of　the　struts　in　the　second　layer　has　no　effect　on　the　structural　stiffness,　and　has　little　effect　on　the　structural　bearing　capacity　and　failure　mode.　The　change　of　the　cable　loads　in　the　second　layer　has　little　effect　on　the　structural　stiffness　and　the　bearing　capacity,　but　has　a　greater　influence　on　the　failure　mode.　It　is　recommended　to　give　priority　to　adjusting　cables　and　struts　in　the　first　layer　during　optimization.　The　initial　geometric　imperfection　has　a　greater　influence　on　the　bearing　capacity.　The　greater　the　degree　of　imperfection　is,　the　lower　the　bearing　capacity　is,　but　the　effect　on　the　failure　mode　is　not　obvious.　©　2020,　Editorial　Office　of　Journal　of　Building　Structures.　All　right　reserved.