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

该学院早期职业发展（CAREER）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程序中。 两个主要的挑战，限制了成功使用模型更新的条件评估是先验模型，创建一个条件良好的参数估计方案和收集的数据的质量的发展。这项研究将通过推进模型更新的分析和实验部分来应对这些挑战。该框架包括创建一个桥梁有限元模型的参数估计模型更新的要求，这增加了可用的先验信息，并将改变传统的元素桥梁设计范例。本研究还将提出一个基于视觉的位移测量的结构工程应用程序和一个动态称重站（WIMS）的结构状态评估应用程序，这两个都是传统的ITS测量。如果成功的话，本研究的结果将为桥梁管理人员提供一个模型更新平台，同时后处理收集的SHM和ITS数据。 模型更新程序将利用新罕布什尔州选定桥梁的SHM和ITS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。 随着桥梁评估技术的进步，这项研究将通过使用可建造的桥梁模型来讲述与社会研究、科学和数学有关的工程故事，从而提高公众对桥梁重要性的理解。这些可建造的桥梁工具包将包括图纸、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课后计划。

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.