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Near-real-time Loss Estimation for Instrumented Buildings

Porter, Keith and Mitrani-Reiser, Judith and Beck, James L. (2006) Near-real-time Loss Estimation for Instrumented Buildings. The Structural Design of Tall and Special Buildings, 15 (1). pp. 3-20. ISSN 1541-7808. doi:10.1002/tal.340.

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A technique is developed to model instrumented buildings with a second-generation performance-based earthquake engineering approach, producing a damage and loss estimate shortly after the cessation of strong motion. It estimates the likely locations of damage (including concealed structural damage), potentially saving the owner time and money by focusing post-earthquake safety and repair inspections. It provides a rapid estimate of repair costs, allowing the owner quickly to apply for recovery funds or an insurance claim. The method uses basement accelerograms, a stochastic structural model, and nonlinear time-history structural analysis to estimate probabilistic engineering demands (structural response). Structural response is input to fragility functions for each damageable assembly to estimate probabilistic physical damage on a component-by-component basis. Probabilistic repair costs for each assembly are calculated and summed, and contractor overhead and profit are added to produce a probability distribution of total repair cost. A simple Bayesian-updating technique employs upper-story accelerograms to refine the stochastic structural model. It is found in application that using the upper-story accelerograms produces only a modest change in the distributions of damage and repair cost, because most of the uncertainty in repair cost results from the uncertainty in the fragility functions and cost distributions, not from uncertainty in the structural model.

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Additional Information:Copyright © 2006 John Wiley & Sons, Ltd. The work was performed in collaboration with M. Miyamura, A. Kusaka, T. Kudo, K. Ikkatai, and Y. Hyodo. It was funded in part by the CUREE–Kajima Joint Research Program Phase V and by the GW Housner Fund. This work was also supported in part by the Earthquake Engineering Research Centers Program of the National Science Foundation, under award number EEC-9701568 through the Pacific Earthquake Engineering Research Center (PEER). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect those of the National Science Foundation.
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CUREE-Kajima Joint Research Program Phase VUNSPECIFIED
Issue or Number:1
Record Number:CaltechAUTHORS:20120817-162546027
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Official Citation:Porter, K., Mitrani-Reiser, J. and Beck, J. L. (2006), Near-real-time loss estimation for instrumented buildings. Struct. Design Tall Spec. Build., 15: 3–20. doi: 10.1002/tal.340
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33328
Deposited By: Carmen Nemer-Sirois
Deposited On:22 Aug 2012 21:13
Last Modified:09 Nov 2021 21:34

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