LRFD-Based Analysis and Design Procedures for Bridge Bearings and Seismic Isolators
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Date
2011-09-26Author
Kalpakidis, Ioannis V.
Constantinou, Michael C.
Filiatrault, Andre
Lay, R.A. Ecker
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This report presents analysis and design procedures for bridge bearings and seismic isolators. The procedures are based on: (1) the LRFD framework, and (2) fundamental principles that include the latest developments and understanding of the behavior of these devices. The new procedures are applicable to both seismically-isolated and conventional bridges. Examples of design of conventional elastomeric and PTFE spherical bearings are presented, as well as examples of detailed design and analysis of the seismic isolation system of a bridge located in California utilizing lead-rubber, single Friction Pendulum and triple Friction Pendulum isolators. This report is intended to serve as a resource document for the development of Memoranda to Designers by the California Department of Transportation for the analysis and design of bridge bearings and isolators.