Performance-based selection of pathways for enhancing built infrastructure resilience

IF 2.7 Q2 ENGINEERING, CIVIL

Sustainable and Resilient Infrastructure Pub Date : 2023-03-13 DOI:10.1080/23789689.2023.2188347

Mohammad Rafiq Joo, R. Sinha

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引用次数: 2

Abstract

ABSTRACT Built infrastructure systems must be resilient to disasters. After a disaster, its functionality has to evolve with significant uncertainties to restore pre-event condition. Innovative infrastructure design and management pathways can aid in sequencing possible pre- and post-disaster actions, incorporating flexibility into planning and decision-making to enhance resilience. Adoption of disaster risk reduction policies can benefit from accurate, comprehensive, and systematic probabilistic risk and resilience assessments. Such assessments, though not widely prevalent, help to understand the root causes of vulnerabilities and quantify their uncertainties. Therefore, they are prerequisites to identify and implement adaptation pathways for enhancing infrastructure resilience. To support identification and implementation of pathways approach, this study presents seismic resilience assessment incorporating functionality loss and pathways for subsequent recovery. An archetypical reinforced-concrete building, representing typical behavior of the building group used for critical functions, is considered under pre- and post-disaster preparedness, planning, and risk reduction options to develop deeper understanding of risks and selection of pathways. Resilience assessments are conducted based on performance-based earthquake engineering approach and considering uncertainties through Monte Carlo simulations. Both engineering and management interventions, such as improving non-structural component performance, eliminating post-disaster impedances, reducing repair delays, other management activities, and their combinations, are simulated under a common framework. The study quantifies how these measures can reduce losses, improve response, and enhance infrastructure resilience. Options for technical and management decision-making by various stakeholders to enhance resilience are also presented. The study advocates embracing the resiliency mindset and illustrates the benefits of multiple stakeholders for risk-informed decision-making.

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基于性能的增强已建成基础设施弹性的途径选择

摘要已建成的基础设施系统必须具有抗灾能力。灾难发生后，其功能必须随着重大的不确定性而发展，以恢复事件前的状态。创新的基础设施设计和管理途径有助于对可能的灾前和灾后行动进行排序，将灵活性纳入规划和决策，以增强抗灾能力。采用减少灾害风险政策可以受益于准确、全面和系统的概率风险和复原力评估。这种评估虽然不普遍，但有助于了解脆弱性的根本原因并量化其不确定性。因此，它们是确定和实施提高基础设施复原力的适应途径的先决条件。为了支持路径方法的确定和实施，本研究提出了地震恢复力评估，包括功能损失和后续恢复的路径。代表用于关键功能的建筑群的典型行为的原型钢筋混凝土建筑，在灾前和灾后准备、规划和风险降低选项下进行考虑，以加深对风险的理解和路径的选择。弹性评估基于基于性能的地震工程方法，并通过蒙特卡洛模拟考虑不确定性。工程和管理干预措施，如提高非结构部件性能、消除灾后阻抗、减少维修延误、其他管理活动及其组合，都在一个共同的框架下进行了模拟。该研究量化了这些措施如何减少损失、改善应对措施和增强基础设施的弹性。还介绍了各利益攸关方为提高复原力而进行的技术和管理决策的备选方案。该研究提倡采用弹性思维，并说明了多个利益相关者对风险知情决策的好处。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sustainable and Resilient Infrastructure ENGINEERING, CIVIL-

CiteScore

7.60

自引率

10.20%

发文量

期刊介绍： Sustainable and Resilient Infrastructure is an interdisciplinary journal that focuses on the sustainable development of resilient communities. Sustainability is defined in relation to the ability of infrastructure to address the needs of the present without sacrificing the ability of future generations to meet their needs. Resilience is considered in relation to both natural hazards (like earthquakes, tsunami, hurricanes, cyclones, tornado, flooding and drought) and anthropogenic hazards (like human errors and malevolent attacks.) Resilience is taken to depend both on the performance of the built and modified natural environment and on the contextual characteristics of social, economic and political institutions. Sustainability and resilience are considered both for physical and non-physical infrastructure.