Title: Framework for Development of Hybrid Simulation in an Earthquake Impact Assessment Context (NEES-2009-0685)
Year Of Curation: 2011
Description: The objective of this project is to develop an earthquake impact assessment framework that integrates hybrid simulation with free-field and structure sensor measurements, system identification-based model updating technology, probabilistic fragility analysis, and existing earthquake loss assessment software. Earthquake impact assessment is the basis for post-earthquake emergency response and recovery planning. A pilot implementation of the earthquake impact assessment framework has been conducted using a six-story steel building in Burbank, CA and the Meloland Road Overcrossing (MRO) Bridge in El Centro, CA. Algorithms have been developed or adapted and communication protocols formulated to link sensor measurements directly into the hybrid system. Free field measurements have been used to characterize the hazard at the site and define strong motion records, and the structural sensors used to tune the building and bridge-foundation-soil model. Hybrid simulations were undertaken using the model and input motion. The response of the building and the bridge, with variation of the ground motion and pier/column response, were used to derive fragility relationships which, with the hazard, were used to estimate earthquake impact. In this manner, the relatively mature subdisciplines responsible for developing the above components have been tested in an integrated manner to assess and mitigate earthquake losses. This project utilized the one-fifth scale loading and boundary condition boxes at the NEES equipment site at the University of Illinois at Urbana-Champaign, and leveraged significant resources through other projects funded by the Missouri Department of Transportation, Federal Emergency Management Agency, Federal Highway Administration, and Mid-America Earthquake Center headquartered at the University of Illinois at Urbana-Champaign.
PIs & CoPIs: Billie Spencer, Amr Elnashai
Dates: September 01, 2007 - January 30, 2011
Organizations: University of Illinois at Urbana-Champaign, IL, United States
Facilities: University of Illinois at Urbana-Champaign, IL, United States
Sponsor: NSF - n/a - 0724172
Keywords: building, hybridsimulation, highwaybridge, Impact assessment
Sheng-Lin Lin "An Integrated Earthquake Impact Assessment System"
"Hybrid Simulation and Bayesian Updating for Reliable Fragility Estimation"
Li et al. "Hybrid Simulation with Multiple-Support Excitation"
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