The impact of a PEER funded research project "Statistical Variation of Seismic Damage Index (DI) of California Bridges" is highlighted below. The project Principal Investigator (PI) is Farzin Zareian, Professor, University of California, Irvine.
Practical implementation of the Probabilistic Damage Control Approach (PDCA) method for designing Ordinary Standard Bridges (OSBs) requires additional data and execution guidelines ranging from a realistic method for representing ground motion hazards to reliability-based seismic design guidelines for proportioning bridge components. In line with these needs, this research project will quantify the variability in nonlinear structural response and its variation to bridge geometry and/or regional factors and establish the level of variability necessary for the practical implementation of the PDCA method by bridge engineers. In addition, the project provides a critical evaluation of the currently available column fragility curves and addresses the peculiarities in demand and capacity estimation in the near-fault regime. The research work is conducted with close interaction between Caltrans bridge engineers to assure deliverables are applied and ready for deployment to the design floor.