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Reasonability of Geometric Topology of Cable Domes

Author: ZhangQin
Tutor: LiuXiLa
School: Shanghai Jiaotong University
Course: Structural Engineering
Keywords: robustness risk event geometric topology structure function cable dome
CLC: TU399
Type: Master's thesis
Year: 2012
Downloads: 48
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Abstract


The robustness of a structure generally can be defined as the property of system to maintain its function in risk event, it emphasizes that the geometric topology of structural components should be reasonable. To discuss the reasonableness of, firstly the range of influence of component with local damage is analyzed. By calculating the magnitude of the range of damage influence, the relative importance for each component can be determined. And the larger the range of damage influence is more important the component is. When the range of damage influence and the relative importance for each component is determined, the geometric topology of the structure can be analyzed. Based on the present analysis, the optimization of geometric topology of cable domes to reduce the range of damage influence of components can be further considered, which will then improve the robustness of the structures.In the present thesis, a Geiger cable dome, as an example, is introduced to describe the new method. Firstly, the geometric topology of the Geiger cable dome is analyzed, and some components need to be re-arranged are determined. By calculating both the magnitude of the range of damage influence and the reasonableness of geometric topology of the improved structures, the effect of several topologic improvement schemes can be obtained. By comparison the most reasonable and robust structure can finally be determined.

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CLC: > Industrial Technology > Building Science > Building structure > Other structures
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