Optimization of vertical position of Outrigger and Belt truss structural system
Keywords:
Belt-truss, Bracings, Deflection, Earthquake loads, High-rise, Lateral displacement, Lateral loads, lateral bracings, Outriggers, Storey drift, Wind dynamicsAbstract
High rise structures are subjected to various lateral loads like earthquake and wind loads. So that it is important in the design of these buildings. Various lateral load resisting structural systems were introduced for the analysis and design of these high-rise buildings which mainly include tubular structures, core supported outriggers with bracings, diagrid structures, etc. The outrigger and belt truss system is one of the most commonly used structural systems to control lateral displacement. The main aspect of the design of outriggers is to fix the position of outriggers. In the present study a comparative parametric study on outrigger and belt truss system by varying location along the height has been done. A 30, 45 and 60 storey building have been modelled and analysed. The modelling and analysing has been performed on Etabs. The dynamic analysis is performed by response spectrum method and wind dynamic
analysis. From the analysis lateral displacement, drift ratio, base shear and fundamental time period are compared for all model and optimum position of outrigger and belt truss system is found out
