Equivalent Static Wind Loads on LargeSpan Arched Structures

Abstract

Abstract: Abstract： Based on computational fluid dynamics (CFD) and the finite element dynamic timehistory analysis method, the timehistory speed of fluctuating wind was simulated by using the numerical method which was used as inlet boundary condition of numerical wind tunnel. Then, nonsteadystate analysis on a largespan arched structure was made by using the FLUENT software to get the timehistory wind loads. Meanwhile, the windinduced vibration response was analyzed using the ANSYS software. After that, equivalent static wind loads (ESWL) based on timehistory response were obtained and the definition of multiobjective ESWL combination factors was proposed. Finally, the multiobjective ESWL of the open largespan arched structure were obtained with their accuracy verified. The study shows that the static response values under ESWL and extreme response values in dynamic analysis are in good agreement.

Key words: Key words： largespan arched structure, timehistory wind speed, multiobjective combination factor, equivalent static wind loads (ESWL)

CLC Number:

TU 312.1

MA Ning, WANG Xun, HONG Ronghua, ZHOU Dai, LI Fangfei, MA Jin. Equivalent Static Wind Loads on LargeSpan Arched Structures[J]. Journal of Shanghai Jiao Tong University, 2016, 50(03): 317-323.

References

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