Assessment of Viscous Damper Placement as Passive Energy Dissipation on High-rise Building, a Numerical Study

Abstract

The methods to reduce the impact of earthquake loads is using a damper, namely passive control, active control, and semi-active. One of the advantages of passive control is because of its simplicity in design, installation, and especially in its maintenance. Viscous Fluid Damper (VfD) is one type of dampers which has been widely applied. A numerical analysis of the seismic response of VfD on the ten-story reinforced concrete (RC) frame that receives lateral loads as earthquake loads already compared to conventional RC frame. Displacement and acceleration are an earthquake response parameter which is a direct impact on the structure. The results of numerical time history analysis with the excitation of the Kobe-X earthquake record show that the presence of structural passive control has succeeded in reducing displacement on the top floor and also on the floors below. On the roof floor, for the X longitudinal direction, there was a reduction up to 7.721 percent. Whereas on the 6th, 4th and 2nd floors the smaller reduction occurred by around 6.624% to 2.932%. Likewise, with the acceleration parameters, generally able to reduce acceleration. For frames with placement of VfD in 1st – 2nd floor can reduce acceleration to 10.293 percent whose data is taken at the top of the building. For further, need an experimental laboratory program to validate the numerical analysis to ensure the prediction behaviour of the structural design.