IT-Enabled Continuous Risk Assessment of Bridge Networks for Customized and Actionable Multi-Hazard Interventions

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。桥梁基础设施业主面临的挑战是有效管理风险，不仅来自老化和恶化，而且来自自然灾害，如地震或风暴潮。 这些困难刺激了一个新兴的趋势，仪器和状态评估的桥梁。 该项目将把最新的桥梁状况数据集综合成桥梁系统和桥梁网络的可靠性以及多种危险的风险指标，并促进桥梁系统和网络层面的有效干预。 三个主要的研究目标支持这项工作：（1）更新模型的桥梁脆弱性，从自然灾害的数据在现场条件。 (2)为了使智能桥梁网络能够在给定样本仪器站点的有限数据的情况下推断多个危险的条件状态和可靠性。 (3)通过一种新的嵌套逆可靠性方法确定关键桥梁和所需的升级，以确保统一的网络级性能。 在新的逆向可靠性方法中集成用于快速脆弱性评估和推理建模的新工具，提供了一种有效投资资金以实现目标网络级性能目标的方法。快速传达风险、标记网络脆弱性来源、预测未来风险以及提供可操作的网络级干预的能力将有助于避免未来的灾难性事件，挽救生命，并提出实现基础设施安全的经济手段。 项目目标的实现将提供一个坚实的框架，用于在多种灾害系统风险的背景下整合监测数据，并可作为基准系统方法，广泛应用于其他领域。 与合作机构密切合作将有助于确保下一代维护计划，应急管理计划和桥梁改造指南的注入。 综合研究和教育计划将对未来几代IT和工程集成商的准备和经验产生广泛的影响，并直接解决吸引和招募多样化学生的需求。 这个雄心勃勃的计划利用现有的大学资源，通过学生社区论坛，振兴本科课程和有针对性的互动K-12外展等活动来实现这些目标。 该项目解决了民用基础设施保护这一关键领域的劳动力短缺问题，并通过利用现实世界的教育经验和强调信息技术与工程相结合的重要性，培养学生为公共服务和基础设施部门做出贡献。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Bridge infrastructure owners are challenged to effectively manage risks not only from aging and deterioration but also from natural hazards, such as earthquakes or storm surge. These difficulties are stimulating an emerging trend of instrumentation and condition assessment of bridges. This project will synthesize newly available bridge condition datasets into bridge system and bridge network reliability and risk metrics for multiple hazards, and promote effective interventions at the bridge system and network level. Three primary research goals support this effort: (1) To update models of bridge vulnerability from natural hazards with data on in-field condition. (2) To enable a network of smart bridges capable inferring condition status and reliability under multiple hazards given limited data from sample instrumentation sites. (3) To identify critical bridges and required upgrades that ensure uniform network-level performance through a new nested inverse reliability method. Integrating the new tools for rapid fragility assessment and inference modeling within the novel inverse reliability method provides an approach to effectively invest funds to achieve target network-level performance goals.The ability to rapidly communicate risks, flag sources of network vulnerability, project future risks, and provide actionable network-level intervention will help avoid future catastrophic events, save lives, and present economic means for achieving infrastructure safety. Accomplishment of the project goals will provide a solid framework for integrating monitoring data within the context of multi-hazard systems risk, and can serve as a benchmark systems approach with extensive applications to other fields. Working closely with collaborating agencies will help ensure infusion in next generation maintenance programs, emergency management plans, and bridge retrofit guidelines. The integrated research and education program will have a broad impact on the preparation and experiences of future generations of IT and engineering integrators, and directly addresses the need to engage and recruit a diverse pool of students. This ambitious program leveraging existing University resources accomplishes these goals through such activities as student community forums, revitalized undergraduate curriculum, and targeted interactive K-12 outreach. The project addresses a workforce shortage in the critical area of civil infrastructure protection, and prepares students to contribute to public service and infrastructure sectors by using real-world educational experiences and by emphasizing the importance of integrating information technology and engineering.