Increasing buildings’ resistance to earthquake forces is not always a desirable solution especially for the building contents that are irreplaceable or simply more valuable than the actual primary structure (e.g. museums, data storage Centre’s, etc.). Base isolation and seismic dampers can be employed to minimize inter-story drifts and floor accelerations via specially designed isolation and dampers system at the structural base, or at higher levels of the superstructure. In this research, we’ll examine the response of buildings isolated using isolation system hybrid consisting of Lead-Rubber Bearings (LRB), Flat Sliding Bearings (FSB), with the addition of Rotation Fiction Damper (FD) at the base, then compare the results with buildings that have traditional foundation, in terms of the (period, displacement and distribution shear force and height of the building). It conducts TIME HISTORY seismic analysis for some varying height buildings (eight, twelve, sixteen, and twenty stories), with help of SAP2000 using an earthquake acceleration-time history for (El- Centro). The results show that the use of insulation system Hybrid has had a significant impact on improving the performance of origin in terms of reducing displacements and base shear with in-creasing height of the building, but has had a negative impact on the drift, which leads to an in-crease in drift with the increased flexibility of the building.
[1]
D. S. Wagh,et al.
Base Isolation of Structures
,
2016
.
[2]
Luis Andrade,et al.
Seismic Protection of Structures with Modern Base Isolation Technologies
,
2009
.
[3]
Hirokazu Iemura,et al.
VERIFICATION TESTS OF THE DYNAMIC BEHAVIOR OF THE NOVEL FRICTION-BASED ROTATIONAL DAMPER USING SHAKING TABLE
,
2008
.
[4]
C. S. Tsai,et al.
Seismic Behavior of MFPS Isolated Structure Under Near-Fault Sources and Strong Ground Motions With Long Predominant Periods
,
2003
.
[5]
Michael C. Constantinou,et al.
Behaviour of the double concave Friction Pendulum bearing
,
2006
.
[6]
Leif Otto Nielsen,et al.
Seismic Isolation with a new Friction-Viscoelastic Damping System
,
2004
.
[7]
R. S. Jangid.
Optimum friction pendulum system for near-fault motions
,
2005
.
[8]
Farzad Naeim,et al.
Design of seismic isolated structures
,
1999
.