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广州亚运城体操馆屋盖结构体系由比赛区直腹杆拱架体系、训练区桁架体系和飘带区单层网壳三个大单元构成,各单元通过内外环梁和H形钢梁连接。将上部钢结构与下部混凝土结构进行整体建模计算,通过节点有限元分析确定了直腹杆拱架节点刚接形式,总结了判断节点刚度的标准。通过精细分析,确定了主要受力构件——柱和直腹杆拱桁架各杆件的计算长度。对支撑体系进行优化设计,确定结构抗侧刚度。通过大悬臂端铺设应力蒙皮板计算分析,表明应力蒙皮板起到了一定的抗震作用。最后对本工程进行了弹塑性时程分析,考察了整个结构大震下的受力特征,分析表明支撑钢屋盖的内环柱及外环柱均处于弹性状态,下部混凝土柱基本处于弹性状态。
Guangzhou Asian Games Gymnastics Stadium roof structure system consists of the system of straight belly of the competition area arch system, the training area truss system and the single-layer reticulated shell Retainer composed of three large units, the unit through the inner and outer ring beam and H-beam connection. The upper steel structure and the lower concrete structure are modeled as a whole. The rigid connection of the web of the web with the web members is determined by the finite element analysis of the nodes. The criterion for judging the stiffness of the joints is summarized. Through the detailed analysis, the calculated length of each member of main force component-column and straight web arch truss was determined. Optimize the design of the support system to determine the structural side stiffness. Through the large cantilever side of the laying of stress skinned board calculation and analysis, shows that the stress skinned board played a certain role in earthquake resistance. Finally, the elastic-plastic time-history analysis of this project is carried out. The stress characteristics of the whole structure under large earthquake are investigated. The analysis shows that the inner ring column and the outer column which support the steel roof are both in elastic state and the lower concrete column is in the elastic state.