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基于剪式单元,结合预应力技术,开发出适用于中大跨度的预应力索拱开合结构。并以60 m跨度的预应力索拱开合结构为例,采用通用有限元软件ABAQUS对其进行了运动过程分析、静力分析和整体稳定性分析,得到开启过程和闭合状态的受力特性,可为设计预应力索拱开合屋盖提供技术支持和参考。
Based on scissor elements and prestressed technology, a prestressed cable arch opening and closing structure suitable for medium and large span has been developed. Taking the 60 m span prestressed cable arch opening and closing structure as an example, the general finite element software ABAQUS was used to analyze the moving process, static analysis and overall stability analysis, and the stress characteristics of the open process and the closed state were obtained. It can provide technical support and reference for designing prefabricated cable roof.