摘要
张弦梁结构、弦支穹顶结构为两类典型的杂交空间结构,适用于大跨度的屋盖结构如航站楼、会展中心、体育场馆等。该文提出了上部结构为自由曲面网格结构的张弦体系或弦支体系等一般大跨度杂交空间结构的形状确定问题,并在以往解析分析的基础上提出了数值分析的算法和计算例题。在此基础上编制了相应程序,结合实际工程给出了计算分析例题。该文的工作可供工程设计人员和有关学者参考。
Beam-String Structures and suspen-domes are two typical hybrid spatial structures. Nowadays they are popularly adopted for large-span roof systems such as air terminals, convention exhibition centers and sports arenas. This paper discusses the shape determination of hybrid spatial structures, and then proposes an efficient numerical algorithm to implement it. On the basis of the general inverse equilibrium matrix of the lower cable-bar system and the dynamic relaxation method, this numerical algorithm is programmed using VC＋＋ 6.0 and validated through some numerical examples. Hopefully the work presented in this paper could benefit the further research work and engineering practice on hybrid spatial structures.
出处
《工程力学》
EI
CSCD
北大核心
2010年第11期56-63,共8页
Engineering Mechanics
基金
国家自然科学基金项目(50638050)
关键词
杂交空间结构
张弦梁
弦支穹顶
形状确定问题
自由曲面网格结构
找形分析
找力分析
hybrid spatial structures
beam-string structures
suspend-dome
shape determination problem
reticulated structures with free surface
form finding analysis
force finding analysis
