Wind Loads on Overhead Sign Structures: A Comparative Study

Aly, Aly Mousaad; Benson, J. A.

doi:10.3390/app13031682

Cited by 1 publication

(1 citation statement)

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“…For this reason, computational fluid dynamics (CFD) has increased in importance to simulate the effect caused by wind in structures. In this way, Aly and Benson [12] performed CFD in standard, curve and porous signs. They found out that higher holes decrease drag forces compared with smaller ones.…”

Section: Introductionmentioning

confidence: 99%

Wind Vulnerability of Flexible Outdoor Single-Post Billboards

et al. 2023

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Increased temperature due to global climate change is increasing the magnitude and frequency of extreme winds making billboard structures more vulnerable. This paper proposes a methodology to determine the structural safety of flexible outdoor single-post billboards. A CFD model of a flexible single-post billboard was performed as an example. Resultant wind forces were obtained for the previous model using different wind speeds. A mechanical numerical model of the billboard was realized, and this was subjected to the resultant wind forces. Internal forces for the most vulnerable places of the billboard were obtained for all different adopted wind speeds. Next, a reliability analysis of the billboard was performed considering several values for the bias factor and coefficient of variation for the internal forces caused by wind. Safety levels determined from the reliability analysis indicate that a billboard designed with a nominal wind speed of 180 km/h cannot achieve the target probability index of 3.2 for wind speed higher or equal to 200 km/h for any of the adopted probabilistic parameters. Significant differences in the found safety levels for the evaluated probability parameters indicate that billboard structures could undergo safety values below the target one with changes in the case where wind characteristics endanger this type of structure.

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Section: Introductionmentioning

confidence: 99%