机构地区: 深圳大学
出 处: 《钢结构》 2010年第2期39-46,共8页
摘 要: 对深圳市坪山体育馆的结构选型,受力特点及结构设计进行介绍。针对上述问题进行计算分析,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)弦支体系不仅有效地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关重要;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 structure features, behaviors & design optimization of shenzhen pingshan gymnasium are introduced 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 strueture & the roof steel structure, the temperature effeets analysis, the finite element analysis of key joints. The calculation analysis indicated that 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 by finite element analysis.