Improving seismic behaviour of irregular building through double column and console beam application

Abstract

Recent years, the shape of building is getting sophisticated; otherwise the environmental load such as earthquake, wind, and wave cannot longer be neglected during analysis. Accommodating U-shaped building for analysis, we noticed the irregularity in both horizontal and vertical direction will create severe damages to the structure under the earthquake. In order to prevent destruction to the structural member, assigning dilatation is one possible way by utilizing double column or console beam system to break the irregularity of the building plan. During analysis, the model of non shear wall system is also built in order to compare the effectiveness between both systems. Strong evidence of double column system performance is less than console beam is answered from behavioural parameters of the both system under earthquake. Higher period, displacement and drift are peril for the double column system compare to console beam system application. Hence, console beam system is beneficially selected to solve irregularities in horizontal direction as the discontinuity of the load transfer is relatively small. Hereinafter, installing earthquake resistant system can be reconsidered after the dilatation was applied to strengthen certain direction which was marked as the weak axis of the building structure.