This document summarizes and reviews several research papers on the comparative study of Special Moment Resisting Frames (SMRF) and Ordinary Moment Resisting Frames (OMRF) under different soil conditions. Some key findings include:
1) SMRFs perform better than OMRFs in reducing bending moments, member sizes, and base shear. They provide more ductility and are more effective in seismic zones.
2) Soil flexibility can increase the natural period of structures, altering seismic responses. Accounting for soil-structure interaction is important, especially on soft soils.
3) Research has found higher base shear, inter-story shears, and moments in OMRFs compared to SMRFs