SHAPE OF A SPACE FRAME WITH MAXIMUM BUCKLING LOAD

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  • スペース・フレームの最大座屈荷重形態
  • スペース フレーム ノ サイダイ ザクツ カジュウ ケイタイ

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Abstract

In the design of a large span space frame, the first problem to be solved is the problem of stability, the buckling problem, especially for a single layer space frame. For a space frame with a certain configuration, the buckling mode and buckling-load parameter are very sensitive to its original shape (the nodal coordinates of the structure). By adopting nonlinear programming with geometrical nonlinear analysis, the present paper promote a method to find the optimum shape of a space frame with maximum buckling load. A single layer space frame is taken as a numerical example, and the analysis shows that the buckling load parameter increases 18.4%.

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