Equivalent Static Wind Load of a LongSpan Truss String Structure

Abstract

Abstract: Abstract： The timehistory of wind velocity was simulated by using the harmonic superposition method, which was then turned into pressure timehistory of wind. By using the ANSYS software, the FEM model for the structural system was constructed, and the structural windinduced vibration responses under different incoming winds were calculated by using the simulated wind pressure timehistory. Moreover, a novel equivalent static wind load was established, where the windinduced 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： longspan truss string structure; wind velocity simulation; windinduced dynamic

CLC Number:

QIAO Shuaibin1,WANG Xun1,WANG Zitong1,ZHOU Dai1,2. Equivalent Static Wind Load of a LongSpan Truss String Structure[J]. Journal of Shanghai Jiaotong University, 2016, 50(01): 59-64.

References

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