| Geometrical nonlinear stability analyses of cable-truss domes |
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| 引用本文： | 高博青,卢群鑫,董石麟. Geometrical nonlinear stability analyses of cable-truss domes[J]. Journal of Zhejiang University. Science. B, 2003, 0(3) |
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| 作者姓名： | 高博青 卢群鑫 董石麟 |
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| 作者单位： | Department of Civil Engineering，Zhejiang University，Department of Civil Engineering，Zhejiang University，Department of Civil Engineering，Zhejiang University Hangzhou 310027，China，Hangzhou 310027，China，Hangzhou 310027，China |
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| 基金项目： | Project (No .5 0 2 780 86)supportedbytheNationalNaturalScienceFoundationofChina |
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| 摘 要： | INTRODUCTIONThetensegritystructurecomposedofcablesandbarsisoftwotypes.Oneistheflexibletensegritystructure.Thistypeofstructurehasnostiffnessandtheshapeofthestructureisnotde terminedwhennoprestressisapplied .Theform findingprocessfortheinitialequilibriumisa…
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Geometrical nonlinear stability analyses of cable-truss domes |
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| GAO Bo qing,LU Qun xin,DONG Shi lin. Geometrical nonlinear stability analyses of cable-truss domes[J]. Journal of Zhejiang University. Science. B, 2003, 0(3) |
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| Authors: | GAO Bo qing LU Qun xin DONG Shi lin |
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| Abstract: | The nonlinear finite element method is used to analyze the geometrical nonlinear stability of cable truss domes with different cable distributions. The results indicate that the critical load increases evidently when cables, especially diagonal cables, are distributed in the structure. The critical loads of the structure at different rise span ratios are also discussed in this paper. It was shown that the effect of the tensional cable is more evident at small rise span ratio. The buckling of the structure is characterized by a global collapse at small rise span ratio; that the torsional buckling of the radial truss occurs at big rise span ratio; and that at proper rise span ratio, the global collapse and the lateral buckling of the truss occur nearly simultaneously. |
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| Keywords: | Cable truss dome Geometrical nonlinear stability analysis Parameter analysis Cable distribution Critical load |
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