Opslagwindtrigger

Does including blockage effects reduce wind load?

We will find that, by idealizing the wind as a steady flow (a current), the inclusion of blockage effects in the analysis produces nearly a 50% reduction in the wind load on each bridge model.

How important is wind load accounting for blockage?

Accounting for blockage is crucial in wind load calculations, as it can reduce the estimated load by 50% compared to ignoring blockage. This is due to the wind loading scaling as k2.

What is a reduced wind load in transporter bridges?

In transporter bridges, reduced wind loads are adopted in the second wind load case, when the analysis includes the gondola and live load. This is because bridge operations are ceased if the wind speed exceeds a much lower level in practice.

Can a 'current blockage' approach be used for wind loading?

Given the successful reproduction of the Georgiou and Vickery wind loading experiments on obstacle grids, the application of the offshore engineering ‘current blockage’ approach to wind loading on truss structures such as transporter bridges is clearly appropriate.

How do actuator disc models affect wind load?

Actuator disc models indicate that the overall reduction in wind load is close to 50% in both cases, demonstrating the significance and approximate equivalence of blockage effects on the two transporter bridges.