Equivalent static wind load of a long-span truss string structure

作者：Qiao, Shuaibin; Wang, Xun; Wang, Zitong; Zhou, Dai^*

来源：Journal of Shanghai Jiaotong University, 2016, 50(1): 59-64.

DOI：10.16183/j.cnki.jsjtu.2016.01.010

• Dynamic amplification factors
• Equivalent static wind loads
• Long span truss
• Structural systems
• Superposition method
• Wind induced vibrations
• Wind pressure distribution
• Wind velocity simulation

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.

• 出版日期2016
• 单位上海交通大学