NEES @ UC San Diego

Analytical and Experimental Development of Bridges with Foundations Allowed to Uplift During Earthquakes (2013)

Analytical and Experimental Development of Bridges with Foundations Allowed to Uplift During EarthquakesFull Size

Investigators

PI: M. Panagiotou University of California, Berkeley
Co-PI: P. Fox University of California, San Diego
Co-PI: J.I. Restrepo University of California, Davis
Co-PI: B. Kutter University of California, Berkeley
Co-PI: S. Mahin University of California, San Diego
Graduate Student Researcher: G. Antonellis University of California, Berkeley
Graduate Student Researcher: A. Gavras University of California, Davis
Graduate Student Researcher: G. Guerrini University of California, San Diego
Graduate Student Researcher: A. Sanders University of California, San Diego

Contact Person:
Marios Panagiotou, panagiotou@berkeley.edu


Video Footage

Conventionally designed bridges rely on the concept of ductility, whereby the column reinforcement is detailed to ensure the development of flexural plastic hinges at the base and the top of the columns. While bridges designed in this manner may be safe from collapse, they are susceptible to considerable damage and permanent lateral displacements that can impair traffic flow and necessitate costly, time consuming, dangerous, and disruptive inspections and repairs. As an alternative design, bridges with columns supported on rocking foundations may develop large nonlinear deformations when subjected to strong shaking but experience far less damage in the columns, with the added bonus of these columns that re-center following a high-intensity earthquake ground motion.

The experiment, as part of this research project funded by Caltrans, tests two columns supported on shallow foundations. The shake table tests of the specimens use the large soil confinement box (LSCB) of NEES@UCSD (inner dimensions of 10.1 m length, 5.6 m width, and 7.6 m height). The tests will be conducted using dry soil and soil including water.

NEHRPNSFNEEScommNEESIAS Accredited

The Large High-Performance Outdoor Shake Table is supported in part by the George E. Brown, Jr. Network for Engineering Simulation (NEES) program of the National Science Foundation under Award Number CMMI-0927178.

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