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对其桥梁库存的维护，修复和更换进行决策和优化。为此，我们将收到大量的结构构件（即，梁，内垫板，隔板等）从解构的尚平原桥，并将i)应用先进的实验（即，视觉，化学，微观和机械）技术来评估实际情况（即，材料劣化程度）这些构件经受了近60年的实际现场暴露条件；Ii)调查桥梁不同部分存在的材料退化对结构的影响，以及尝试历史修复策略的有效性；iii)开发能够预测现有结构在经历类似退化时的未来性能的数值模型。最终，我们的目标是综合这些知识，以开发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.