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A Study on the Seismic Isolation Systems of Bridges with Lead Rubber Bearings

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This study consists of the development and presentation of example of seismic isolation system analysis and design for a continuous, 3-span, cast-in-place concrete box girder bridge. It is expected that example is developed for all Lead-Rubber Bearing (LRB) seismic isolation system on piers and abutments which placed in between super-structure and sub-structure. Design forces, displacements, and drifts are given distinctive consideration in accordance with Caltrans Seismic Design Criteria (2004). Most of all, total displacement on design for all LRBs case is reduced comparing with combined lead-rubber and elastomeric bearing system . Therefore, this represents substantial reduction in cost because of reduction of expansion joint. This presents a summary of analysis and design of seismic isolation system by energy mitigation with LRB on bridges.
Cite this paper
Kim, W. , Ahn, D. and Lee, J. (2014) A Study on the Seismic Isolation Systems of Bridges with Lead Rubber Bearings. Open Journal of Civil Engineering, 4, 361-372. doi: 10.4236/ojce.2014.44031. 
 

[1] Constantinou, M.C., Whittaker, A.S., Kalpakidis, Y., Fenz, D.M. and Warn, G.P. (2006) Performance of Seismic Isolation Hardware under Service and Seismic Loading. Technical Report MCEER-07-0012, Multidisciplinary Center for Earth-quake Engineering Research, State University of New York at Buffalo, Buffalo.
[2] Berger/Abam Engineers, Inc. (1996) Federal Highway Administration Seismic Design Course, Design Example No. 4. (Document Available through NTIS, Document No. PB97-142111).
[3] Federal Emergency Management Agency (2000) Prestandard and Commentary for the Seismic Rehabilitation of Buildings. FEMA 356, Washington DC.
[4] American Institute of Steel Construction (AISC) (2001) Manual for Steel Construction, Load and Resistance Factor Design. 3rd Edition, American Institute of Steel Construction-AISC, Chicago.
[5] Kim, W. (2007) Seismic Isolation of Bridges with Lead Rubber Bearings and Friction Pendulum Bearings with Viscous Dampers. State University of New York at Buffalo, Master Project Report, Buffalo.
[6] California Department of Transportation (2004) Caltrans Seismic Design Criteria. Version 1.3. California Department of Transportation, Sacramento.
[7] Constantinou, M.C., Whittaker, A.S., Fenz, D.M. and Apostolakis, G. (2007) Seismic Isolation of Bridges. Version 2, Report to Sponsor, California Department of Transportation, Sacramento.
[8] CSI (2002) SAP 2000 Analysis Reference Manual. Computers and Structures Inc., Berkeley.                                             eww141225lx
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