OJER  Vol.4 No.1 , February 2015
The Behavior of Multi-Story Buildings Seismically Isolated System Hybrid Isolation (Friction, Rubber and with the Addition of Rotational Friction Dampers)
Abstract: 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.
Cite this paper: Barmo, A. , Mualla, I. and Hasan, H. (2015) The Behavior of Multi-Story Buildings Seismically Isolated System Hybrid Isolation (Friction, Rubber and with the Addition of Rotational Friction Dampers). Open Journal of Earthquake Research, 4, 1-13. doi: 10.4236/ojer.2015.41001.

[1]   Trever, K. (2001) Base Isolation of Structure. Design Guideline Holmes Consulting Group.

[2]   Naeim, F. and Kelly, J. (1996) Design of Seismic Isolated Structures. Wiley, New York.

[3]   Jangid, R.S. (2004) Optimum Friction Pendulum System for Near-Fault Motions. Engineering Structures.

[4]   Leif, O., Mualla, I.H. and Iwai, Y. (2004) Seismic Isolation with a New Friction-Viscoelastic Damping System. 13th World Conference on Earthquake Engineering, Vancouver, 1-6 August 2004.

[5]   Earthquake Protection Systems (2003) Technical Characteristics of Friction Pendulum Bearings. Vallejo, California.

[6]   Tsai, C.S., Chiang, T.C. and Chen, B.J., Chen, J.C., Ed. (2003) Seismic Behavior of MFPS Isolated Structure: Seismic Engineering 2003. ASME, 73-79.

[7]   Fenz, D.M. and Constantine, M.C. (2005) Behavior of the Double Concave Friction Pendulum Bearing. Submitted for Review and Possible Publication in Earthquake Engineering and Structural Dynamics.

[8]   Morgan, T.A. and Mahin, S.A. (2011) The Use of Base Isolation Systems to Achieve Complex Seismic Performance Objectives. Pacific Earthquake Engineering Research Center College of Engineering University of California, Berkele.

[9]   Toyooka, A., Himeno, T., Hishijima, Y., Iemura, H. and Mualla, I. (2008) Verification Tests of the Dynamic Behavior of the Novel Friction-Based Rotational Damper Using Shaking Table. The 14th World Conference on Earthquake Engineering, 12-17 October 2008, Beijing.

[10]   Thaer, T. (2011) The Behavior of Seismically Isolated Buildings Using Rubber Bearing. Master, the Higher Institute of Seismic Studies and Research, University of Damascus.

[11]   Symans, M.D. (2010) Design Examples Seismic Isolation. Instructional Material Complementing FEMA 451.

[12]   Shirule, P.A., Jagtap, L.P., Sonawane, K.R., Patil, T.D., Jadwanir, N. and Sonar, S.K. (2012) Time History Analysis of Base Isolated Multi-Storied Building. International Journal of Earth Sciences and Engineering, 5, 809-816.

[13]   Wang, Y.-P. (2009) Fundamentals of Seismic Base Isolation. International Training Programs for Seismic Design of Building Structures Hosted by National Center for Research on Earthquake Engineering Sponsored by Department of International Programs, National Science Council.

[14]   SAP2000, Software Verification.

[15]   Andrade, L. and Tuxworth, J. (2009) Seismic Protection of Structures with Modern Base Isolation Technologies. Paper 7a-3, Concrete Solutions.

[16]   (2003) Structural Protection Systems. MAURER Seismic Isolation Systems with Lead Rubber Bearings (LRB). SPS/ 02.05. 2003.