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Modest flooding can trigger catastrophic road network collapse due to compound failure

Transportation

Modest flooding can trigger catastrophic road network collapse due to compound failure

S. Dong, X. Gao, et al.

This groundbreaking research by Shangjia Dong, Xinyu Gao, Ali Mostafavi, and Jianxi Gao reveals how a mere 2.2% of flooding-related compound failures can drastically shrink road network connectivity by up to 17.7%. Dive in to understand the unseen impacts of urban flooding on transportation functionality!

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Playback language: English
Abstract
This paper investigates the impact of compound failures on road network connectivity during urban flooding, focusing on the interplay between structural, functional, and topological failures. Using high-resolution traffic data from Harris County, Texas during Hurricane Harvey, and applying network percolation theory, the study finds that a small percentage (2.2%) of flood-induced compound failures can lead to a significant reduction (up to 17.7%) in the size of the largest connected cluster within the transportation network. This highlights the importance of considering indirect effects, such as traffic pattern changes, when assessing flood impacts on transportation network functionality.
Publisher
Communications Earth & Environment
Published On
Feb 23, 2022
Authors
Shangjia Dong, Xinyu Gao, Ali Mostafavi, Jianxi Gao
Tags
urban flooding
road network connectivity
compound failures
Hurricane Harvey
traffic data
network percolation theory
transportation functionality
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