The main structure of a gymnasium in Shiyan adopts frame-shear wall structure system,and the upper 106m large-span concave roof adopts cable-supported dome structure system.In order to meet the requirements of architectural simplicity and structural rationality,different roof structure systems were compared including square pyramid space truss,cable-supported dome and the combination of both square pyramid space truss and cable-supported dome,and the cable-supported dome structure system with light structure and good economy was selected.Combined with the mechanical characteristics of the cable-supported dome structure and the adverse effects on the substructure,the top and bottom chord arrangement,torsional stiffness,support constraint conditions and strut height of the structure were optimized.The response of the cable-supported dome with broken cable,the displacement of the support under different load cases and the stiffness degradation of the cable under low stress were checked.The results show that the optimized roof structure meets the requirements of structural safety and applicability,and has high redundancy.
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维普
万方数据
