柔性边界索网结构受力分析

The Force Behavior's Analysis of Cable-edged Cable Structure

提出一种以双向多跨连续,柱间以索桁架连接的柔性边界索网结构,并结合天津一汽成品车停放场悬索工程,运用通用有限元分析软件ANSYS对其进行非线性有限元分析,并与一般边界为刚性的索网结构受力性能进行了比较。索桁架作为结构的柱间支承,在保证其预应力情况下, 有足够的刚度承担竖向荷载以保证其结构的稳定,结构的索桁架和索网能够很好地协同工作;在经济性能有很大的优势,使结构耗钢量比单跨刚性边界索网结构有较大的降低。分析结果表明柔性边界索网结构是一种理想的新型结构形式。

The cable truss-edged cable-nets structure is introduced in the paper. Using the general purpose finite element program system, ANSYS, non-linear FEM analysis and design of the structure are made. Comparison with an ordinary cable nets structure is done in detail. The computing results indicate that cable truss and cable nets work well together, and ensure stability of structure and improve the economy performance of structure. The results show the new cable-nets structure is perfect new structure.