Akademik Veri Yönetim Sistemi
4th Global Conference on Engineering Research (GLOBCER'24), Balıkesir, Türkiye, 16 - 19 Ekim 2024, ss.240
ABSTRACT
Numerous essential offshore structures are supported by wide-diameter rigid piles for support, including bridges, wind turbine systems, and marine construction platforms. Offshore foundations are responsible for transmitting the complete loads of offshore structures to the seabed and ensuring their stability. Any structural failure within these foundations can lead to a collapse of the entire offshore structure. Environmental loads including wind and waves may cause lateral strains on offshore piles. These loads can cause long-lasting soil deformations and create excessive pore water pressures in saturated soils. This is a critical factor to consider in designing structures and managing construction projects. In this study, to enhance the precision and efficacy of the design process for offshore foundation systems subjected to axial and lateral wave loads, a finite element analysis has been executed to ascertain the stresses and displacements in a concrete pile under comparable loading conditions. The results indicated that the maximum bending moments existed at a distance of 3 to 6 times of the pile diameter from the seabed level. As the soil's relative density increases, the point where the largest bending moment occurs approaches the pile head. Also, the effect of pile length on ultimate lateral resistance decreases as the pile length increases. Lastly, the soil type has a significant role in predicting the deformation behavior of the laterally loaded piles. While ultimate resistance is crucial for sands throughout the pile design, deformation values are vital for clays.
Keywords—Offshore pile, Finite element analysis, soil deformation, foundation