2011年第26届世界大学生运动会篮球馆结构设计

Structure Design of Pingshan Basketball Gymnasium for Universidad 2011 Shenzhen

深圳市坪山体育馆为2011年第26届夏季世界大学生运动会篮球赛场,该工程为一复杂体育建筑,上部圆形钢结构,直径72m,采用新颖的弦支穹顶结构体系,下部为钢筋混凝土框架结构,独立柱基。本文介绍了结构选型,受力特点及结构设计,以及针对上述问题的计算分析,包括:弦支穹顶体系整体受力性能和屈曲稳定性影响分析;荷载取值分析;施工全过程模拟计算分析;单体上部钢结构、单体下部混凝土结构初步分析的基础上的整体结构总装分析;根据深圳本地气温统计资料,合理选取计算温差,分析温差效应对结构安全的影响;关键复杂节点实体有限元计算分析,确保其可靠安全。计算分析表明:1)弦支体系不仅有效的提高了屋盖结构刚度,还大大提高了单层网壳结构稳定性;2)大跨空间结构设计进行总装分析至为重要;3)大跨结构温差收缩效应影响存在,温差效应施工模拟计算十分必要;4)复杂空间结构的节点十分关键,应通过有限元分析,精心设计。

The suspend - dome structure is designed for the roof of Shenzhen Pingshan Basketball Gymnasium for Universidad 2011,the overlapping diameter of which is 72 m,along with the RC frame - shear wall system as base structure.The introduction of the structure features,behaviors & design optimization is presented in this paper,which includes:the whole suspend -dome behavior & overall stability(buckling) analysis,the construction simulation analysis, the isolated & assembled modeling analysis for the base RC structure & the roof steel structure,the temperature effects analysis,the finite element analysis of key joints.The following summaries are indicated:1) the suspend - dome system could effectively stiffen the roof structure,& also benefit the overall stability of a singe - layer reticulated dome greatly;2) the assembled modeling analysis would be essential for long - span space structure;3 ) the temperature variation & shrinkage effects on ultra - long RC structure should be noticed,the related construction simulated calculation should be necessary;4) the key joint of space structure should be designed precisely.