Post-disaster decision-making framework for roadway networks considering social vulnerability

IF 5.1 2区 工程技术 Q1 TRANSPORTATION
Eric Merschman, Mehrnaz Doustmohammadi, Abdullahi M. Salman, Michael Anderson
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引用次数: 0

Abstract

Resilience is a characteristic of a system to adapt, resist and recover from disruptions as defined by the U.S. Federal Highway Administration. The concept has been adopted across several fields of research. Existing literature on roadway network resilience typically frames resilience in terms of performance metrics based on the attributes of the network (travel time or travel distance, for example). However, the impact of disruptions to roadway networks varies for different populations within communities because of various socioeconomic factors. While it is important to capture the performance characteristics of transportation networks to ensure goods and services can flow throughout a community, there also lies a need to consider the needs of populations in a community that are more vulnerable to disruptions due to limited mobility. This study aims to propose a framework for roadway network post-disaster recovery planning that considers the needs of socially vulnerable populations. Specific objectives of the study include: i) developing a geographic social vulnerability index (SVI) using census demographic data to quantify the extent to which communities may be considered “socially vulnerable” ii) integrating the index into an actionable decision framework for post-disaster bridge repair strategy and iii) demonstrating how the consideration of social vulnerability can influence network performance. By applying the framework to the Mobile Bay area in Alabama, the significance of including social vulnerability in resilience evaluation becomes evident.

考虑社会脆弱性的公路网络灾后决策框架
根据美国联邦公路管理局的定义,复原力是一个系统适应、抵御和从中断中恢复的特性。这一概念已被多个研究领域采用。关于公路网络恢复能力的现有文献通常根据网络的属性(例如旅行时间或旅行距离)来确定恢复能力的性能指标。然而,由于各种社会经济因素,道路网络中断对社区内不同人群的影响各不相同。虽然掌握交通网络的性能特征以确保货物和服务能够在整个社区内流动非常重要,但同时也需要考虑社区内因流动性受限而更容易受到交通中断影响的人群的需求。本研究旨在提出一个考虑到社会弱势群体需求的道路网络灾后恢复规划框架。研究的具体目标包括:i) 利用人口普查数据开发地理社会脆弱性指数 (SVI),量化可被视为 "社会脆弱性 "社区的程度;ii) 将该指数纳入灾后桥梁维修战略的可操作决策框架;iii) 展示社会脆弱性的考虑如何影响网络性能。通过将该框架应用于阿拉巴马州的莫比尔湾地区,将社会脆弱性纳入抗灾能力评估的意义就显而易见了。
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来源期刊
CiteScore
9.80
自引率
7.70%
发文量
109
期刊介绍: Travel Behaviour and Society is an interdisciplinary journal publishing high-quality original papers which report leading edge research in theories, methodologies and applications concerning transportation issues and challenges which involve the social and spatial dimensions. In particular, it provides a discussion forum for major research in travel behaviour, transportation infrastructure, transportation and environmental issues, mobility and social sustainability, transportation geographic information systems (TGIS), transportation and quality of life, transportation data collection and analysis, etc.
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