Learning from the Champlain Bridge - Toward improved condition assessment diagnostics and prognostics supporting more effective bridge maintenance and rehabilitation

本研究的目的是开发一个定量和全面的桥梁状况评估框架，以支持雅克卡地亚尚普兰桥梁公司。（JCCBI）和其他基础设施所有者在维护、修复和更换其桥梁库存的决策和优化方面提供帮助。为此，我们将收到许多结构构件（即，梁、填充板、横隔板等）从解构的尚普兰桥，并将i）应用先进的实验（即，视觉、化学、显微镜和机械）技术来评估实际状况（即，材料劣化程度）; ii）调查桥梁不同部位材料劣化的结构影响以及尝试的历史修复策略的有效性; iii）开发能够预测经历类似劣化的现有结构未来性能的数值模型。最终，我们的目标是综合这些知识，制定更好的知情桥梁状况评估框架和管理协议。

The objective of this research is to develop a quantitative and comprehensive bridge condition assessment framework to support Jacques Cartier Champlain Bridge Inc. (JCCBI) and other infrastructure owners in decision-making and optimization of the maintenance, rehabilitation, and replacement of their bridge stock. To this end, we will receive numerous structural members (i.e., girders, in-fill slabs, diaphragms, etc.) from the deconstructed Champlain bridge and will i) apply advanced experimental (i.e., visual, chemical, microscopic and mechanical) techniques to assess the actual condition (i.e., material deterioration degree) of these members subjected to real field exposure conditions over nearly 60 years; ii) investigate the structural implications of material degradation present in different parts of the bridge and the effectiveness of attempted historical rehabilitation strategies; and iii) develop numerical models capable of predicting the future performance of existing structures experiencing similar deterioration. Ultimately, we aim to synthesize this knowledge to develop better informed bridge condition assessment frameworks and management protocols.