Analysis and Design of a Multistory Steel Structure with Semi-Rigid Connection

Generally, structure frameworks are designed by assuming that end connection is fully rigid or pinned. Full strength of the beam section is never fully utilized due to the fact that support moments are always higher than the span moments and hence selection of a suitable section depends on support moments. By providing connection flexibility, the support moments can be reduced and span moment increased hence leading to smaller sections resulting in economy. This can be achieved by providing semi-rigid connections. In this work rigid frame model and semi rigid frame model are analysed and designed and compared in the prospect of tonnage and connection Moment-Rotation relationship for Semi Rigid joints are found by developing Microsoft Excel Worksheets. Further analysis of the structure with Semi Rigid joints is to be carried out using STAAD Pro. Software.