Architecture -Demonstration Software for Seismic Risk Analysis of Highway Systems

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REDARS 1: Demonstration Software for Seismic Risk Analysis of Highway Systems by Stuart D. Werner, Jean-Paul Lavoie, Chip Eitzel, Sungbin Cho, Charles Huyck, Shubharoop Ghosh, Ronald T. Eguchi, Craig E. Taylor and James E. Moore II

Research Objectives
The objective of this research is to further develop, apply, program, and disseminate the methodology for seismic risk analysis (SRA) of highwayroadway systems that was developed under FHWA-MCEER Project 106. The methodology’s risk-based framework uses models for seismology and geology, engineering (structural, geotechnical, and transportation), repair and reconstruction, system analysis, and economics to estimate systemwide direct losses and indirect losses due to reduced traffic flows and increased travel times caused by earthquake damage to the highway system. Results from this methodology also show how this damage can affect access to facilities critical to emergency response and recovery. Federal Highway Administration

or the past several years, the Multidisciplinary Center for Earthquake Engineering Research has been carrying out highway research under the sponsorship of the Federal Highway Administration. One task from this research has developed a new methodology for deterministic and probabilistic seismic risk analysis (SRA) of highway systems nationwide, and has applied it to the Shelby County, Tennessee highway system (Werner et al., 2000). This methodology will enable users to evaluate and prioritize how various pre-earthquake seismic-risk-reduction strategies (e.g., strengthening of particular bridges, system enhancement) and post-earthquake emergency-response strategies (e.g., traffic management, emergency bypass road construction) will improve post-earthquake traffic flows and reduce associated losses. During the past year, this SRA methodology has been independently validated (Eguchi et al., 2003), and a plan for developing the methodology into a public-domain software package named REDARS...
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