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首页> 外文会议>3rd International Workshop on Structural Health Monitoring, Sep 12-14, 2001, Stanford University >Real-Time Monitoring of Reinforced Concrete Structures Using Dynamic Deformation Signatures
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Real-Time Monitoring of Reinforced Concrete Structures Using Dynamic Deformation Signatures

机译：使用动态变形签名实时监测钢筋混凝土结构

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摘要

The degradation of reinforced concrete (RC) structures is a major problem in many countries, with the need to refurbish and keep in service the increasing number of aging buildings and infrastructure identified as an important challenge for the future. A promising method to monitor and assess the integrity and strength of RC structures was developed and applied to investigate the load-deformation histories for l/3rd-scale slab panels in laboratory experiments. The slabs were subjected to increasing point load increments at mid-span to induce damage, and unloaded at intervals to facilitate measurements of dynamic response. The resulting external deflections, internal deformations (strains) and accelerations were recorded for each load increment, corresponding to a unique damage state. The results from one such test are outlined and presented in the present paper. They demonstrate that changes in the dynamic time-domain deformation signatures, viewed using novel signal processing techniques are highly revealing of damage and loss of integrity. Sufficiently developed, the method could provide on-demand integrity monitoring and strength assessment of slabs and other RC structures.
机译：在许多国家，钢筋混凝土（RC）结构的退化是一个主要问题，需要翻新并保持使用状态不断增长的老化建筑物和基础设施的数量不断增加，这被视为未来的重要挑战。开发了一种有前途的监测和评估RC结构完整性和强度的方法，并将其用于研究实验室实验中L / 3级楼板的荷载-变形历史。板在中跨处承受增加的点荷载增量，以引起破坏，并在一定间隔内卸载，以方便动态响应的测量。记录每个载荷增量所产生的外部挠曲，内部变形（应变）和加速度，对应于唯一的损坏状态。本文概述并介绍了一项这样的测试的结果。他们证明，使用新型信号处理技术观察到的动态时域变形特征的变化高度揭示了损坏和完整性丧失。经过充分开发，该方法可以提供按需完整性监控以及对板和其他RC结构的强度评估。

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