SEISMIC BEHAVIOUR OF MULTISTOREY STEEL STRUCTURE WITH DIFFERENT TYPE OF BRACING SYSTEM

Structures in high seismic risk areas may be susceptible to severe damage in a major earthquake. For the variety of structures and possible deficiencies that arise, several retrofitting techniques can be considered. Bracing system is one of the retrofitting techniques and it provides an excellent approach for strengthening and stiffening existing building for lateral forces. Also, another potential advantage of this system is the comparatively small increase in mass associated with the retrofitting scheme since this is a great problem for several retrofitting techniques. The study of braced steel frame response is widely studied in many branches of Structural engineering. Many researchers have been deeply studying these structures, over the years, mainly for their greater capacity of carrying external loads. Every Special moment resisting frames undergo lateral displacement because they are susceptible to large lateral loading. The problems associated with this are the P-Δ effect and the ductile and brittle failure at beams and columns connections. As a consequence, engineers have increasingly turned to braced steel frames as an economical means for earthquake resistant loads.