摘要
张拉整体结构是连续的拉索和不连续的压杆所构成的自应力平衡体系,由一系列张力索和受压杆件组成,具有较少的赘余单元,是极其高效的结构形式.张拉整体结构的压杆是"张力海洋中的孤岛",显然,压杆是不可或缺的组成部分,起着十分重要的作用.压杆的失稳将导致结构的失效.本文根据非线性有限元理论研究讨论基于压杆失稳的张拉整体结构极限承载能力.文中结合平面尺寸为2m×2m的平板型张拉整体结构的模型试验,进行了理论计算与试验结果分析比较,为张拉整体结构应用于实际工程提供一定理论依据.
Tensegrity is the self-stressed equilibrium system including continuous cables and discontinuous struts which constitutes with a series of tensile cables and compression struts and has less redundant units. Thus the tensegrity is a high-effective structural configuration.The struts of tensegrity are the 'islands in the tensile oceans'. Obviously,struts are the indispensable parts of tensegrity and act as extremely important function. Buckling of struts would lead to invalidation of the structure. According to nonlinear finite element analysis, the ultimate load-carrying capacity of tensegrity system is discussed based on the buckling of struts. Furthermore, this paper compares the result of theoretical calculation to the result of experimental research of a plane tensegrity structure with plan dimension being 2m×2m.
出处
《空间结构》
CSCD
2004年第1期7-11,共5页
Spatial Structures
基金
国家自然科学基金资助项目(50008015).
关键词
张拉整体结构
极限承载力
压杆稳定
非线性
有限元
tensegrity structure
ultimate load-carrying capacity
buckling of struts
nonlinear finite element
