Simplified calculation of wave-induced accumulated damage zone in clayey seabed for gravity-based foundation
Simplified calculation of wave-induced accumulated damage zone in clayey seabed for gravity-based foundation
Clayey seabeds are susceptible to damage due to wave action, which limits the number of cycles they can endure. The number of cycles experienced up to the limit indicates the level of soil damage. Identifying the damage zone is crucial for assessing potential failure risks, such as settlement or sliding, in gravity-based foundations during storm events. This paper proposes a simplified, explicit method for the calculation of damage zone, allowing for rapid analysis over a large number of cycles. The method requires only the shear stress-strain relationship, which is derived from cyclic shear tests, to assess the damage of soil elements. Along with a simple finite element program to obtain the stress field, it can be easily extended to the damage zone in seabed soil. By quantifying changes in the damaged area, this method efficiently evaluates the stability of foundation. From the perspective of soil damage, this paper expends the application of the equivalent number of cycles for simplified assessment of potential failure risk in gravity-based foundation. Additionally, this approach avoids simulation accuracy issues arising from complex dynamic calculation.
HaoLong Chen; Lulu Zhang; Chencong Liao
5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)
12 - Gravity base foundations, Drag and Plate Anchors
https://doi.org/10.53243/ISFOG2025-396
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