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System-Based Resilience Assessment of Networked Transportation Systems in Metropolitan Areas: Case of Greater Los Angeles

机译：大都市区网络交通系统的基于系统的恢复性评估：大洛杉矶的案例

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One essential aspect of urban resilience is the ability of the transportation networks to maintain mobility and accessibility during the immediate aftermath, as well as in the long-term recovery, of an extreme event. Despite the critical nature of transportation services, the infrastructure inventory in many developed countries are in poor condition. For example, transportation infrastructure in the United States has repeatedly been graded poorly by American Society of Civil Engineers as it is aged and in need of a major retrofit or replacement effort. It is well established that topology-based approaches in transportation resilience abstract out network supply and travel demand relationships as well as fundamental traffic assignment concepts such as flow under capacity constraints. On the other hand, system-based approaches that are more promising in generating actionable policy insights lack the granularity enabled now by the recent advances in data and modeling, omit the scale of analysis required in metropolitan areas, and ignore formal considerations of the hazard itself which makes studies prone to simplistic what-if assumptions. To address such shortcomings, a preliminary framework intended to couple seismic hazard analysis with transportation network analysis is designed and deployed in a Greater Los Angeles Area case study where the impacts of a 7.3M scenario earthquake are investigated.
机译：城市恢复力的一个重要方面是运输网络在即时后果中保持移动性和可访问性的能力，以及极端事件的长期恢复。尽管运输服务的批判性，但许多发达国家的基础设施库存状况不佳。例如，美国土木工程师协会的交通基础设施一再被美国民间工程师评分，因为它的老化和需要重大改造或更换努力。很好地确定了基于拓扑的运输方法摘要摘要网络供应和旅行需求的关系以及基本的交通分配概念，如容量限制下的流量。另一方面，在产生可操作的政策洞察中更有前途的基于系统的方法缺乏数据和建模的最近进步，忽略了大都市地区所需的分析规模，并忽略了危险本身的正式考虑因素这使得研究易于简单的假设。为解决此类缺点，旨在通过运输网络分析耦合地震危害分析的初步框架，设计和部署在更大的洛杉矶区域案例研究中，调查了7.3M场景地震的影响。

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