TESTING OF FRICTION PENDULUM SEISMIC ISOLATION BEARINGS FOR BRIDGES

• DOI: 10.14359/14319
• Publication Date: 1997-01-01
• Authors: Victor A. Zayas; A Kartoum; Michael C. Consta...; Panos Tsopelas
• Keywords: Earthquake shaking table; Pendulum; Seismic isolation

Friction Pendulum bearings have been extensively tested for different environmental conditions and loadings applicable to bridges. Data are presented from various test programs, spanning six years, including several hundred shake table compression-shear tests. Shake tests of bridge models were used verify dynamic performance the seismic isloation system. Results reported decks mounted on flexible piers rigid abutment supports, types ground motions, standard Caltrans motion spectra near fault pulse motions. Comparisons between experimental results analysis presented. Compression-shear effects temperature minus 20 degrees F 90 F, 20,000 cycles thermal movements, simulated aging, scragging, compression overloads, tension loads. The show effect these factors properties bearing. bearing ultimate strength safety shown. implications design application isolation bridges discussed. Stable predictable responses observed over a wide range loadings, lending support confidence reduce earthquake hazards