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

该奖项由2009年美国复苏和再投资法案(公法111-5)资助。桥梁基础设施所有者面临的挑战是，不仅要有效地管理老化和恶化的风险，还要有效地管理地震或风暴潮等自然灾害的风险。这些困难正在刺激一种新兴的桥梁仪器和状况评估趋势。该项目将把新获得的桥梁状况数据集综合到桥梁系统和桥梁网络的可靠性和多种危险的风险度量中，并在桥梁系统和网络层面促进有效的干预。支持这项工作的三个主要研究目标：(1)用现场条件的数据更新自然灾害的桥梁脆弱性模型。(2)使智能桥梁网络能够在来自样本仪表现场的有限数据的情况下推断在多种危险情况下的状态和可靠性。(3)通过一种新的嵌套反向可靠性方法，识别关键网桥和需要的升级，以确保统一的网络级性能。将用于快速脆弱性评估和推理建模的新工具集成到新的反向可靠性方法中，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。快速沟通风险、标记网络脆弱性来源、预测未来风险并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，拯救生命，并为实现基础设施安全提供经济手段。项目目标的实现将为在多危害系统风险的背景下整合监测数据提供一个坚实的框架，并可作为基准系统办法广泛应用于其他领域。与合作机构的密切合作将有助于确保在下一代维护计划、应急管理计划和桥梁改造指南中投入使用。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影响，并直接满足吸引和招收多样化学生的需求。这一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并强调信息技术与工程相结合的重要性，使学生做好为公共服务和基础设施部门做出贡献的准备。

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.