• SAKSHI RAMCHANDRA PAL
• S. W. THAKARE
• Dr. A. I. Dhatrak

In recent times, hybrid caisson foundation is being considered as an alternative supporting base for offshore wind turbines. These foundations have to resist moment and horizontal loads due to wind and wave actions. This paper describes the results obtained by numerical analysis for hybrid caisson foundation combined with additional structural elements in the form of wings. The ultimate lateral load capacities of conventional caisson foundation and hybrid caisson foundation in layered sand bed are determined numerically with MIDAS GTS NX software and compared. Taking caisson cap as a point of reference, the effect of lateral loads, resulting from wind action and water currents acting on the wind turbine and the foundation respectively is simulated by varying the eccentricities of the resultant horizontal load. It is observed that the lateral load capacity increases with foundation size and decreases with increase in eccentricity. Ultimate lateral load capacity of hybrid caisson foundation is higher than that of conventional caisson foundation. Also, as the width of wings, fixed to caisson foundation, increases, lateral load capacity increases. From the present analysis, lateral load- overturning moment interaction diagrams are developed, which may be useful for preliminary design of hybrid caisson foundation with wings.

Hybrid Caisson Foundations, Numerical analysis, Lateral Load Capacity, MIDAS GTS NX

"PERFORMANCE OF HYBRID CAISSON FOUNDATION FOR OFFSHORE STRUCTURES ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 9, page no.c155-c164, September-2021, Available :http://www.jetir.org/papers/JETIR2109218.pdf

"PERFORMANCE OF HYBRID CAISSON FOUNDATION FOR OFFSHORE STRUCTURES ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 9, page no. ppc155-c164, September-2021, Available at : http://www.jetir.org/papers/JETIR2109218.pdf