Designing foundations for wind turbines in areas with permafrost presents unique challenges due to the thermal sensitivity of permafrost, active layer thaw, and freeze-thaw cycles. Permafrost is ground that remains frozen for at least two consecutive years. The presence of permafrost can provide a stable foundation for structures, but it is also susceptible to thawing if the thermal regime is disturbed. The active layer is the layer of soil above the permafrost that thaws and freezes seasonally. Active layer thaw is a major concern because it can cause settlement and instability of the foundation. When the active layer thaws, the soil loses its strength and stiffness, leading to settlement of the foundation. Freeze-thaw cycles can also damage the foundation. The expansion and contraction of water during freezing and thawing can cause cr....
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