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| Optimization of BuiltonStilts Type DiscShapeLike Spatial Structures |
| HONG Ronghua1,WANG Xun1，ZHOU Dai1,2，LI Fangfei1，CHEN Yian1 |
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(1. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University,
Shanghai 200240, China； 2. Collaborative Innovation Center for Advanced Ship and DeepSea Exploration, Shanghai 200240, China)
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Abstract Numerical Simulation of Wind Field and WindResistant Shape
Abstract： Based on the computational fluid dynamics (CFD) method, the wind flow characteristics and wind pressure distribution of the builtonstilts type discshapelike spatial structure were numerically simulated at different incoming wind directions by using the Fluent software. The influence of the height of the supporting column, the heightspan ratio of the top and the bottom structural surfaces on wind pressure distribution and windloading shape coefficients was analyzed. The results show that the height of the supporting column should be chosen carefully to allow wind pass easily and to reduce wind load force. With the increase of heightspan ratio of the top and the bottom structural surfaces, the positive wind pressure on windward, the vortex effect on the leeward and the overall wind loading force increase significantly. It is found out that a lower curvature surface will significantly improve the structural windresistant characteristics. Finally, some conclusions on windresistant structural shape optimization were reached, which could provide some references for the design of this kind of structures.
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Published: 29 January 2016
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