Understanding Pile Run and How to Mitigate Risks
[Yunlin Offshore Wind Farm Project Suffers Delay as Monopile Lost During Installation] (https://www.oedigital.com/news/498049-yunlin-offshore-wind-farm-project-suffers-delay-as-monopile-lost-during-installation)
What is pile run and what are the consequences?
To grasp the problem, it’s essential to understand what causes pile run. Simply put, a pile experiences soil resistance during the three stages of penetration in the ground: set-down, self-weight penetration, and driving. The resistance of the ground is influenced by the ground conditions, pile tip position, velocity, and weight. Calculating the resistance during all stages of installation plays a crucial role in predicting pile run.
If the weight and inertia of the driving assembly exceed the soil resistance, the pile starts to accelerate. This is the start of the pile run. Once the soil resistance during the pile run becomes larger than the weight and inertia of the assembly, the pile begins to decelerate. Once stopped, the pile run event is completed.
Pile run can result in significant damage in different ways. If a pile run occurs during driving, the hammer weight can cause a sudden increase in hook load. These shock loads can damage the crane, initiate uncontrolled motions of the hammer.
Please use the questions below to help you understand : 1. What are some strategies to mitigate running piles? 2. What impact will inaccurate seabed soil data have when installing monopiles?
Foundation Designs for Offshore Wind Turbines
Foundation Designs for Offshore Wind Turbines
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