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| Received:October 11, 2014 Revised:December 26, 2014 |
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| DOI：10.7511/jslx201602003 |
| KeyWord:computational fluid dynamics folding reticulated shell numerical investigations surface wind pressure structure shape optimization |
| Author | Institution |
| 颜卫亨 |
长安大学 建筑工程学院, 西安 |
| 黄政 |
中国市政工程华北设计研究院有限公司, 天津 |
| 吴东红 |
长安大学 理学院, 西安 |
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| Abstract: |
| As a kind of wind-sensitive structure,the folding reticulated shell has mechanical behaviors of weak area to wind-resistance and large wind pressure gradient.To optimize the superficial wind pressure distribution and reduce the wind-induced responses for folding reticulated shell,a fundamental study was conducted by using the software FLUENT,which was based on the fluid dynamic theory and the atmospheric boundary layer theory.According to the wind tunnel test results,some key parameters were discussed including the computational domain size,the computational domain discrete and the turbulence model.On this basis,8 shape optimization schemes of folding reticulated shell were analyzed and the partition shape coefficients and their standard deviation were obtained accordingly.Through comparing with the initial surface wind pressure of the structure,an optimal scheme was gotten finally,which has good performance of wind-resistance and can relieve the adverse distribution of wind pressure effectively.The results indicate that the CFD numerical analysis method is applicable in the shape optimization of wind-sensitive structure,and it provides an effective method for the design of new camping houses. |
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