LittleNose
Mechanical
- Dec 12, 2003
- 9
We are considering the design of a subsea structure that will use pin piles for permanent foundations.
During the pile installation into the guide cone, assume the pile impacts onto the ‘cone’ plate of the guide. A vertical and lateral impact force will result.
How is the initial impact force on the guide determined?
We have considered using energy equations, with the known mass of the pile, impact velocity (as a combination of the crane lowering velocity and the wave motions effects).
However, to determine the impact force we would need to know the impulse time. I am not aware of any direction from a design code to determine this.
Does anyone have any suggestions?
During the pile installation into the guide cone, assume the pile impacts onto the ‘cone’ plate of the guide. A vertical and lateral impact force will result.
How is the initial impact force on the guide determined?
We have considered using energy equations, with the known mass of the pile, impact velocity (as a combination of the crane lowering velocity and the wave motions effects).
However, to determine the impact force we would need to know the impulse time. I am not aware of any direction from a design code to determine this.
Does anyone have any suggestions?