Abstract：
The roof of Baoan stadium is a typical spoke structure, the cables of the structure are used fixed length during designing and tensioning. Obtain the real displacement of the roof structure in different stages is important for engineering construction, thus, use finite element analysis soft respectively calculate the spatial position of nodes on outer ring beam, upper and lower radial cable when the upper radial cables length are 8.00, 1.00, 0.60, 0.30, 0.00(m) and when the lower radial cables length are 5.00, 1.00, 0.60, 0.20, 0.00(m). In tension stage, site monitoring is carried out according to the calculation progresses, and obtained the deformation parameters of roof structure in different tensioning stages, through comparing the actual monitoring value with theoretical calculation value find that both of them coincide well, the comparing result proved that both of actual monitoring value and the theoretical calculation value are correct and feasible.
