Modelling of spreader bars can be achieved in a general frame analysis.
As you have stated, there are effectively degrees of freedom which need restraint to achieve equilibrium, but in practice need to move laterally. The way to deal with these is to use a soft spring as a support for the...
rconner: In answer to your questions.
1) The bottom is effectively sealed by being driven into soil below sea level - even if the soil is porous there is an effective water trap to prevent air ingress by the open end of the bottom of pile.
The top will be sealed deliberately to reduce...
Moltenmetal: Your suggestion of an anode inside the monopile is a good one. In fact I have just had some discussions with DNV in Denmark and they also suggested putting one sacrificial anode inside the monopile; this could be monitored periodically to check for depletion. The anode would...
I have the following chemical process obtained from wikipedia which suggests that oxygen and water are required to rust steel. It also suggests that oxyegen from the air, or dissolved oxygen in the seawater will be used to form the Fe203. There is no hydrogen release, but I have also seen some...
Offshore design codes state that the internals of monopile structures need not be painted internally to inhibit corrosion provided that they are sealed. I believe the reason is: any corrosion is limited by the depletion of oxygen. However this suggests that there would be a reduction in air...
