Analysis and Design of Semi Rigid Steel Frame and Joints

Presently the joints in the steel frames are designed as fixed or pinned joint. Generally the welded joints are designed as fixed joints and bolted joints are considered as or designed as pinned joints. While designing the joints it is assumed that the fixed joint is not having any kind of flexibility and pinned joint are not having any kind of stiffness. i.e. while designing it is considered as fixed joints are totally stiff and pinned joints are totally flexible. It is assumed that the pinned joint allows the rotation and translation and fixed joint allow only translation .In present study the five bays five storey steel structures of commercial cum residential building will be analyzed with semi rigid connections. In the analysis the rigidity of the connections will be varied from 0% to 100% with interval of 10. Design of members (beams and column) will be done and quantities of material will be calculated for each case. Comparison of quantity of material required will be carried out to decide the most economic but safe rigidity case. Design of connections between beam and column will be done for selected rigidity case.