Optimized Sandwich Deck Foundation Design for Turbo Generators under Seismic Loading

This paper presents a novel approach to designing and optimizing a turbo generator deck foundation using a sandwich structural concept. The foundation consists of two reinforced concrete slabs separated by a damping material layer, aiming to enhance vibration mitigation while reducing material usage and construction costs. Finite Element Modelling (FEM) and dynamic analysis are used to evaluate the performance of the design under operational and fault-induced dynamic loads. Modal and harmonic analyses show that the proposed sandwich design significantly reduces vibration amplitudes and shifts resonance frequencies away from critical operating ranges. The results suggest that the optimized foundation design provides better structural performance compare