Comparative Study of Effect of Structural Irregularities & Different Types of Bracings in Multistoried Steel Building

In recent years there has been significant rise in usages of irregular structures in plan. Irregular buildings constitute large portion of modern urban infrastructures. Such irregular structures needs to be taken care by structural engineers particularly in high seismic zones. It causes extra shear, torsion etc. Asymmetry in the plan increases stresses of certain structural elements. The control of the dynamic response of the multi-storey building can be achieved by increasing stiffness through the use of bracing system. In present study comparison of Response Spectrum Analysis results of 20 storey irregular steel building under same loading conditions were done using Professional Software ETABS. The building is having different plans for different floors and this building is modeled for four different types of bracing systems. This paper aims to study the effects of seismic forces on plan irregularity and to know which bracing system becomes more efficient by using four different types of bracings.