Highway wind damage

Category 5 Hurricane Wind DamageFEA stress analysis

Highway Sign

10/29/2017 rev BDon Blanchet

3B Associates

[email protected]

Prepared for: FL-DOT1

Solidworks 2018 model

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Steel construction welded and boltedSteady 200 MPH wind loading

FEA mesh – 450,000 d.o.f.

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Boundary Conditions

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Bolted to heavyConcrete supports2 places

Results: permanent deformation – 2.89 inches

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Results: peak stress

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Steel yield pointExceeded

Near base of verticalsupports

Conclusions

Simple static analysis predicts failure at a steady wind pressure.

More complex dynamic analysis recommended CFD turbulence calculations to predict vibration response due to downstream vortex shedding.

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