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| Equivalent Static Wind Load of a LongSpan Truss String Structure |
| QIAO Shuaibin1,WANG Xun1,WANG Zitong1,ZHOU Dai1,2 |
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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
Abstract： The timehistory of wind velocity was simulated by using the harmonic superposition method, which was then turned into pressure timehistory of wind. By using the ANSYS software, the FEM model for the structural system was constructed, and the structural windinduced vibration responses under different incoming winds were calculated by using the simulated wind pressure timehistory. Moreover, a novel equivalent static wind load was established, where the windinduced dynamic amplification factor was combined with the instantaneous wind pressure distribution at a specific time. Finally, from numerical examples, the equivalent static wind load distribution based on the minimum vertical reaction forces and the maximum nodal displacement of the truss were obtained.
Key words： longspan truss string structure; wind velocity simulation; windinduced dynamic
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Received: 07 January 2015
Published: 29 January 2016
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