大跨度空腹夹层板空间结构施工期支撑体系时变性能研究

Temporal Analysis of Support System of Large Span Open-web Sandwich Plate Space Structure During Construction

为了研究大跨度空腹夹层板空间结构在施工过程中其支撑体系的时变性,针对贵州省老干部活动设施改扩建项目主体结构,采用大型有限元软件SAP2000建立结构与支撑体系的统一模型,利用其阶段施工分析模块,根据实际施工过程模拟了支撑体系在施工过程中的荷载、轴力、变形等因素不断变化的过程,模拟分析过程与实际情况差异较小。根据所建立的理论模型从空间上探索钢管支撑架立杆荷载的分配与受力变化规律,为现场的安全可靠施工提供参考。

In order to study the time-variation of the supporting system of the space structure of large-span empty sandwich panels in the construction process,a large-scale finite element software SAP2000 was used to establish a unified model of the structure and support system for the main structure of the Guizhou Provincial old cadre activity facilities reconstruction and expansion project.The construction analysis module simulates the continuous changing process of the load,axial force,deformation and other factors of the support system during the construction process according to the actual construction process.The difference between the simulation analysis process and the actual situation is small.According to the established theoretical model,the law of distribution and force variation of the vertical load of the steel pipe supporting frame is explored in space,so as to provide reference for the safe and reliable construction of the site.