Seismic risk assessment and mitigation analysis of large public school building portfolios in Metro Manila. Issue 3 (August 2022)

• Record Type: Journal Article
• Authors: Jeswani, Kevin; Guo, Jack; Christopoulos, Constantin
• Is Part Of: Earthquake spectra. Volume 38:Issue 3(2022)
• Page Start: 1946
• Page End: 1971
• Publication Date: 2022-08
• Subjects: FEMA P-58 -- nonlinear dynamic analysis -- portfolio risk assessment -- near-fault effect -- scenario analysis; Earthquake engineering -- Periodicals; Earthquake engineering; Periodicals; 624.1762
• DOI: 10.1177/87552930221086304
• Languages: English
• ISSNs: 8755-2930

Abstract

This article presents an integrated framework for portfolio seismic risk assessment. The framework includes a systematic approach to the collection and categorization of exposed assets, and a robust method that combines vulnerabilities of different levels of resolution, including detailed vulnerabilities based on Federal Emergency Management Agency (FEMA) P-58 and REDi analyses, to produce efficient portfolio-level assessment. The vulnerability information encodes risk information that directly addresses the decision-support needs of stakeholders, including the benefits of seismic retrofit. The proposed framework is applied to a spatially distributed infrastructure portfolio composed of over 1000 public school buildings across Makati and Quezon City, in the Metro Manila region in Philippines, to demonstrate the value of portfolio-level seismic risk mitigation strategies. This study illustrates that the proposed regional seismic risk assessment approach can provide more reliable regional risk assessments in a computationally efficient manner and is able to quantify different risk contributors and identify cost-drivers that can be targeted for performance-based risk management of large portfolios.