空间桁架拱支索网结构稳定性的模型试验  

Scaled model test for the stability of space-truss arch supported cable network structures

作　　者：聂建国[1] 陈必磊[1] 肖建春[2] 樊健生[1] 

机构地区：[1]清华大学土木工程系,北京100084 [2]贵州工业大学土木工程系,贵阳550003

出　　处：《清华大学学报（自然科学版）》2004年第6期782-785,共4页Journal of Tsinghua University(Science and Technology)

基　　金：北京市科委资助项目 ( H0 10 610 2 3 0 112 )

摘　　要：空间桁架拱支索网结构是一种新型空间混合结构体系。为进一步研究这种体系的力学性能 ,分析预应力索网对空间桁架拱平面外稳定性的影响 ,制作了一个 1:2 0的空间桁架拱支索网模型 ,并通过静力加载进行了试验研究。利用有限元软件 ANSYS对模型进行了数值分析。模型试验与理论分析结果的比较分析表明 ,这种混合结构的整体受力性能良好 ,预应力索网的存在约束了桁架拱的平面外变形 。The space-truss arch supported cable network structure is a new hybrid spatial structural system. Tests on a 1∶20 scale structure were performed to study the characteristics and the interactions between the pre-stressed cable networks and the space-truss arch. The finite element model of the scale structure was developed using the commercial software ANSYS. The calculated results agreed well with the test results. Both the experimental and numerical results show that the hybrid structure has very good mechanical strength. The pre-stressed cable networks restruct out-of-plane buckling of the space-truss arch which greatly improves the out-of-plane stability of the space-truss arch.

关 键 词：结构 空间桁架拱 索网 稳定性 试验 有限元模型 

分 类 号：TU378.6[建筑科学—结构工程] TU317.1