CAREER: Integrating Structural Health Monitoring, Intelligent Transportation Systems and Model Updating into a Bridge Condition Assessment Framework

职业：将结构健康监测、智能交通系统和模型更新集成到桥梁状况评估框架中

• 批准号: 0644683
• 负责人: Erin Bell
• 金额: $ 40.93万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2013-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0644683&HistoricalAwards=false
• 关键词: CAREER; Integrating; Structural; Health; Monitoring

This Faculty Early Career Development (CAREER) award provides funding to develop a framework for bridge condition assessment that integrates information collected through structural health monitoring (SHM) and intelligent transportation systems (ITS) into a model updating program for bridge decision-making and management. Two of the major challenges that limit the successful use of model updating for condition assessment are the development of the a priori model that creates a well-conditioned parameter estimation scenario and the quality of the collected data. This research will address these challenges by advancing the analytical and experimental components of model updating. This framework includes the creation of a bridge finite element model with respect to parameter estimation for model updating requirements, which increases the available a priori information and will shift the traditional elemental bridge design paradigm. The research will also present a structural engineering application for vision-based displacement measurements and a structural condition assessment application for weigh-in-motion station (WIMS), which are both traditionally ITS measurements.If successful, the results of this research will provide bridge managers with a model updating platform for simultaneously post-processing collected SHM and ITS data. The model updating procedure will exploit SHM and ITS data for a selected bridge in New Hampshire providing information relating to the performance (SHM) and usage (ITS) of the bridge as a proof-of-concept. As this research advances bridge assessment technology, it will advance public understanding of bridge importance by providing a fun and educational activity using build-able bridge models that tell the story of engineering in relation to social studies, science and math. These build-able bridge kits will include drawings, construction sequences, social and economic impacts and education material. The kits will be integrated as hands-on educational enhancement activities into NH after-school programming.

该学院早期职业发展(CALEAR)奖提供资金，以开发桥梁状况评估框架，将通过结构健康监测(SHM)和智能交通系统(ITS)收集的信息整合到桥梁决策和管理的模型更新计划中。限制成功使用模型更新进行状态评估的两个主要挑战是创建条件良好的参数估计场景的先验模型的开发和收集数据的质量。这项研究将通过推进模型更新的分析和实验部分来解决这些挑战。该框架包括根据参数估计建立桥梁有限元模型，以满足模型更新的要求，这增加了可用先验信息，并将改变传统的基本桥梁设计范式。这项研究还将展示基于视觉的位移测量在结构工程中的应用以及基于动态称重站(WIMS)的结构状态评估应用，这两种测量都是其传统的测量方法。如果研究成功，该研究结果将为桥梁管理人员提供一个模型更新平台，以便同时对收集的SHM及其数据进行后处理。模型更新程序将利用新汉普郡一座选定桥梁的SHM及其数据，提供与桥梁性能(SHM)和使用(ITS)相关的信息，作为概念验证。随着这项研究推进桥梁评估技术，它将通过使用可建造的桥梁模型提供有趣和教育活动来促进公众对桥梁重要性的理解，这些模型讲述了与社会研究、科学和数学有关的工程故事。这些可建造的桥梁套件将包括图纸、施工顺序、社会和经济影响以及教育材料。这些工具包将作为实践教育增强活动纳入NH课后规划。