Offshore shallow foundations, including mudmats and suction piles, are extensively utilized to support subsea structures and offshore platforms. The seismic analysis of these foundations faces distinctive challenges, arising from complex soil-structure interaction (SSI), variable seabed conditions, and dynamic loading environments. This paper offers a comprehensive review of existing seismic analysis methodologies tailored to mudmats, suction piles. These methodologies encompass pseudo-static methods, modified pseudo-dynamic (MPD) approaches, site response analyses, and advanced finite element modeling techniques. Based on recent research findings and practical applications, the advantages, limitations, and applicability of each method are critically evaluated for the three types of shallow foundations. Furthermore, key research gaps and future directions are identified to facilitate the development of more reliable and efficient seismic design approaches for offshore mudmats and suction piles.
Sun et al. (Sun,) studied this question.