To　study　the　key　construction　technology　of　the　annular　crossed　cable-truss　structure(ACCTS),　a　finite　element　model　of　an　ACCTS　with　a　diameter　of　100m　was　built　using　ANSYS　finite　element　software.　Based　on　this　model,　the　effects　of　ring　beam　stiffness,　support　column　type,　temperature　load,　and　temperature　error　in　component　fabrication　on　the　ACCTS　are　studied.　The　effects　of　the　ring　beam　and　support　column　on　ACCTS　dynamic　performance　are　analyzed.　A　calculation　method　for　the　cable　length　error　limit　is　proposed　based　on　reliability　theory　and　nonlinear　programming　theory.　The　results　revealed　that　improving　the　stiffness　of　the　ring　beam　within　a　certain　range　can　decrease　its　deformation,　but　the　effects　are　small　outside　this　range.　The　effect　of　deformation　of　the　ring　beam　on　cable　forces　can　be　eliminated　using　the　ring　beam　pre-adjusting　method　to　place　the　ring　beam　in　the　design　position.　The　prestresses　obtained　after　this　adjustment　are　in　error　with　the　initial　prestresses　by　0.51%-1.12%,　which　meets　the　engineering　requirements.　The　constraint　types　at　both　ends　of　the　support　column　have　a　slight　effect　on　the　support　column,　but　the　shape　of　the　support　column　has　a　large　influence　on　structural　lateral　resisting　stiffness.　The　laws　under　full-and　half-span　temperature　loads　are　consistent.　The　temperature　error　in　the　ring　beam　and　cable　fabrication　has　the　greatest　influence　on　the　internal　force　of　the　upper　chord　cable　of　the　ACCTS,　whereas　the　manufacturing　error　in　the　support　column　and　the　entire　temperature　load　have　less　influence　on　the　ACCTS.　The　ring　beam　and　support　column　have　a　slight　effect　on　the　structural　frequencies　and　vibrational　modes　and　do　not　change　the　basic　dynamic　performance　of　the　ACCTS.　The　calculated　cable　length　error　limits　are　less　than　the　criteria　values,　and　their　distribution　is　uniform,　which　benefits　manufacture　and　control.　The　research　results　promote　the　application　of　the　ACCTS　in　practical　engineering.　©　2021,　Editorial　Board　of　Journal　of　Tianjin　University(Science　and　Technology).　All　right　reserved.