成都凤凰山专业足球场结构设计

Structural design of Chengdu Fenghuangshan professional football field

成都凤凰山专业足球场屋盖采用大开口索穹顶结构,覆盖材料为ETFE膜材,主体结构采用钢筋混凝土框架-剪力墙结构,对重要竖向构件采用型钢混凝土进行加强。针对整体结构和构件的重要性,制定了合理的抗震性能目标,通过细致的抗震性能化设计使结构达到预期的抗震性能目标。对大开口索穹顶结构的构成、主要构件截面尺寸及其强度和刚度做了介绍,采用有限元法分析设计了典型、复杂的大开口索穹顶节点,确保了节点安全合理。对大开口索穹顶结构进行了抗连续倒塌分析,确保在偶然工况下结构具备抗连续倒塌的能力。通过合理设计,大开口索穹顶结构具有轻盈高效跨越大空间的性能优势,同时具备良好的抗震性能和抗连续倒塌能力。

Large opening cable dome structure is adopted in the roof of Chengdu Fenghuangshan professional football field,and the covering material is ETFE membrane.The main structure is reinforced concrete frame-shear wall structure,and the important vertical components adopt steel-reinforced concrete(SRC)components.In view of the importance of the whole structure and components and their the reasonable seismic performance objectives were formulated,and the expected seismic performance objectives were achieved through detailed performance-based seismic design.The composition of cable dome structure,section size of main components and their strength and stiffness were introduced,and typical and complex cable dome joints were analyzed and designed by using finite element method to ensure the safety and rationality of joints.The anti-progressive collapse analysis of cable dome structure was conducted to ensure that the structure had the ability to resist progressive collapse under accidental conditions.Through reasonable design,the cable dome structure had the performance advantages of lightweight,high efficiency and spanning large space,and has good seismic performance and anti-progressive collapse ability.