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Form finding and experiments for three types of space trusses

机译:三种类型的空间桁架的找形和实验

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Based on the results of test and analysis of a post-tensioned and shaped space trusses, the following conclusions are drawn. 1) By comparative small post-tensioning force, the feasibility of the proposed method for dome-shaped space trusses has been presented. 2) The nonlinear finite element analysis method can be used in the prediction of shaping formation and the post-tensioning force for dome-shaped space trusses. 3) There is some discrepancy in some of the results between theory and experimenl, due to differences between test model and modeling techniques. The shape formation behaviour needs further investigation. 4) The shape formation process is integral with the erection process, and then these methods over conventional space trusses are economical by eliminating or minimizing the need for scaffolding and the use of high capacity cranes.
机译:根据对后张形空间桁架进行测试和分析的结果,得出以下结论。 1)通过比较小的后张力,提出了所提出的圆顶形空间桁架方法的可行性。 2)非线性有限元分析方法可用于预测圆顶形空间桁架的成形和后张力。 3)由于测试模型和建模技术之间的差异,理论和实验之间的某些结果存在差异。形状形成行为需要进一步研究。 4)形状形成过程与安装过程是一体的,因此,通过消除或最小化对脚手架的需求以及使用大容量起重机,这些方法在常规空间桁架上是经济的。

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