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首页> 外文会议>annual Review of Progress in Quantitative Nondestructive Evaluation >I35W COLLAPSE, REBUILD, AND STRUCTURAL HEALTH MONITORING - CHALLENGES ASSOCIATED WITH STRUCTURAL HEALTH MONITORING OF BRIDGE SYSTEMS
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I35W COLLAPSE, REBUILD, AND STRUCTURAL HEALTH MONITORING - CHALLENGES ASSOCIATED WITH STRUCTURAL HEALTH MONITORING OF BRIDGE SYSTEMS

机译：I35W崩溃，重建和结构健康监测 - 与桥梁系统的结构健康监测相关的挑战

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摘要

During evening rush hour traffic on August 1, 2007, the major interstate highway bridge carrying I35W over the Mississippi River in Minneapolis catastrophically failed, tragically taking the lives of thirteen people and injuring many more. The steel truss bridge, constructed in 1967, was undergoing deck reconstruction during the collapse, and was estimated to carry more than 140,000 vehicles daily. This tragedy generated great interest in employment of structural health monitoring systems. The I35W St. Anthony Falls Bridge, a post-tensioned concrete box bridge constructed to replace the collapsed steel truss bridge, contains over 500 instruments to monitor the structural behavior. Numerical models of the bridge are being developed and calibrated to the collected data obtained from truck load tests and thermal effects. The data obtained over the first few years of monitoring are being correlated with the calibrated models and used to develop the baseline bridge behavior. This information is being used to develop a system to monitor and interpret the long-term behavior of the bridge. This paper describes the instrumentation, preliminary results from the data and model calibration, the plan for developing long-term monitoring capabilities, and the challenges associated with structural health monitoring of bridge systems. In addition, opportunities and directions for future research required to fully realize the objectives of structural health monitoring are described.
机译：在2007年8月1日晚上的高峰时段交通中，主要州际公路桥在明尼阿波利斯密西西比河上携带I35W灾难性地失败了，惨遭着十三个人的生活并伤害了更多。 1967年建造的钢桁架桥在崩溃期间正在进行甲板重建，并估计每天携带超过14万辆的车辆。这场悲剧产生了对结构健康监测系统的就业感兴趣。 I35W St. Anthony Falls Bridge，一个用于更换折叠钢桁架桥的张紧混凝土箱式桥梁，包含500多个仪器来监测结构行为。桥的数值模型正在开发并校准从卡车载荷测试和热效应获得的收集数据。在监测的前几年获得的数据与校准模型相关，并用于开发基线桥接行为。此信息用于开发系统以监视和解释桥梁的长期行为。本文介绍了数据和模型校准的仪器，初步结果，开发长期监控能力的计划以及与桥系统的结构健康监测相关的挑战。此外，还描述了完全实现结构健康监测目标所需的未来研究的机会和方向。

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