Seismic Risk Assessment of Complex
Transportation Networks

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Abstract/Contents

Abstract: This dissertation focuses on understanding seismic risk and possible mitigation measures for complex transportation networks. It first introduces frameworks and computationally-feasible strategies for assessing probabilistic risk to these transportation networks, and applies them to a case study of the San Francisco Bay Area. Using these strategies for a set of earthquake events, values of a network-performance measure called “mode-destination accessibility” are then calculated to link physical infrastructure damage with the impact on people’s ability to travel to desirable destinations, one measure of post-earthquake human welfare. As a result, at-risk communities are also identified. The results suggest that accessibility varies greatly between communities across the case study region, whereas the differences across income groups are more subtle. Furthermore, increased walkability of a region correlates with lower expected losses in accessibility. Finally, this dissertation contributes an automated framework incorporating seismic risk and network importance into bridge retrofit prioritization. A key finding is that bridges important for the network functionality after an earthquake are not necessarily the weakest bridges nor the bridges with the highest pre-earthquake traffic volume. Instead, bridges at moderately high seismic risk on non-redundant routes play a particularly critical role.

Type of resource	text
Date created	May 2020

Author	Miller, MK
Author	Baker, JW

Subject	Civil & Environmental Engineering
Subject	Stanford School of Engineering
Subject	Structural Engineering & Geomechanics
Subject	Blume Earthquake Engineering Center
Subject	seismic risk
Subject	transportation networks
Subject	mode-destination accessibility
Subject	bridge retrofit prioritization
Genre	Technical report

Location	Location https://purl.stanford.edu/pd168xb2523
Location	https://purl.stanford.edu/hn908wn6734

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License: This work is licensed under a Creative Commons Attribution 3.0 Unported license (CC BY).

Preferred Citation: Miller, MK and Baker, JW. (2020). Seismic Risk Assessment of Complex
Transportation Networks. Blume Earthquake Engineering Center Technical Report 199. Stanford Digital Repository. Available at: https://purl.stanford.edu/hn908wn6734

John A. Blume Earthquake Engineering Center Technical Report Series

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