Evaluation and comparison of risk and performance reliability for infrastructure under multiple hazards

加拿大人的安全和经济保障越来越依赖于桥梁、道路、建筑物和港口设施等基础设施的完整性。除了直接的破坏和损失以及对人的生命的威胁之外，桥梁倒塌等灾害还可能对城市地区和其他地区产生负面的社会经济影响。例如，运输延误可能导致生产力下降和失业。该研究项目将开发方法和工具，以帮助决策者评估，暴露，比较和管理受到多种危害的基础设施的风险。危险是不确定的，难以量化。目前的风险评估方法往往缺乏透明度，它们围绕单个风险成分而忽略了大局。他们还孤立地关注罕见的极端灾害，如地震，缺乏将这些灾害与更常见的灾害（如退化）结合起来考虑的工具。这项研究将采取一种新颖的整体方法，将考虑到经常被忽视的故障事件和缓解行动的社会经济后果。该研究还将密切关注一个越来越常见但很少被认识到的危险-基础设施的老化-以及这种危险如何影响基础设施在地震等严重危险中的反应。这项研究将产生工具，帮助决策者就基础设施安全作出最佳选择。它将提供必要的信息，以评估旧基础设施的安全性，并作出适当的维护/改造决定，同时安全地延长基础设施的使用寿命。 将通过与支持组织合作进行的试验平台对该方法进行评估。 试验台将包括评估温哥华港结构故障造成的后果，并比较减轻后果的风险缓解技术。

The safety and economic security of Canadians increasingly depends on the integrity of infrastructure such as bridges, roadways, buildings and port facilities. Besides direct damage and losses and threats to human lives, disasters such as a bridge collapse can have negative socio-economic impacts to the urban area and beyond. For example, transport delays can lead to productivity and job losses. This research project will develop methods and tools to help decision makers evaluate, expose, compare and manage risks to infrastructure that is subjected to multiple hazards. Hazards are uncertain and difficult to quantify. Current risk assessment methods tend to lack transparency and they miss the big picture by centering around individual risk components. They also focus on rare, extreme hazards, such as earthquakes, in isolation, and lack tools to consider such hazards in combination with more routine hazards such as deterioration. This research will take a novel, holistic approach that will take into account oft-overlooked socio-economic consequences of failure events and mitigation actions. The research will also closely examine an increasingly common hazard that is rarely recognized - the aging of infrastructure - and how this hazard affects the response of infrastructure during severe hazards such as earthquakes. The research will produce tools to help decision makers in making optimal choices regarding infrastructure safety. It will provide the information necessary to evaluate the safety of older infrastructure and make proper maintenance/retrofit decisions, while safely prolonging the infrastructure's service life.  The methodology will be evaluated through testbeds conducted in collaboration with supporting organizations.  The testbeds will include the assessment of consequences resulting from structural failures at the Port of Vancouver and comparison of risk mitigation techniques to alleviate the consequences.