Application of vertical rotation method in installation of ultra-large cantilevered space folded-plate grid structure with ribs
Guangzhou New Football Stadium is a top international stadium plan construction.The maximum elevation of the steel awning is 88.6m,the longest cantilever is 91m,the longest single member is 64m.It is a rare ultra-large cantilevered space folded-plate grid structure with ribs in China.Based on the characteristics of the steel awning,the idea of bridge vertical rotation method was introduced.Combined with numerical calculation,the key technique problems such as vertical rotation unit grouping,vertical rotation path selection,lifting frame layout were deeply analyzed.The deformation and internal force of the key processes in the vertical rotation construction were analyzed to fully verify the feasibility of the scheme.The results show that:for ultra-large cantilevered space folded-plate grid structure with ribs,it is feasible to use three structural units grouping,arrange the hinge at the joint of the upper tension ring bar,and set the lifting frame at the center of the field.Compared with the traditional installation method,the vertical rotation method has certain advantages in construction quality,safety,construction period,cost and good promotion value.
Guangzhou New Football Stadiumvertical rotation methodspace folded-plate grid structureultra-large cantileveredsteel structure installation
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