在桥梁混凝土甲板上以代为基础的冲击力识别
Maria Rashidi1, Shabnam Tashakori2, Hamed Kalhori3,4
1Centre for Infrastructure Engineering, Western Sydney University, Kingswood, NSW 2747, Australia.
Sensors (Basel, Switzerland)
|November 25, 2023
概括
本研究引入了一种改进的方法来识别对钢筋混凝土结构的影响力,这对于结构健康监测至关重要. 使用低通波器的兰德韦伯方法准确地重建了撞击事件及其位置.
科学领域:
- 土木工程 土木工程是指土木工程.
- 结构健康监测 结构健康监测
- 计算力学 计算力学 计算力学
背景情况:
- 钢筋混凝土甲板在桥梁和铁路中至关重要,但易受冲击损坏的影响.
- 准确的冲击识别对于结构健康监测至关重要,但由于传感器放置的局限性而具有挑战性.
- 反向识别方法是有希望的,但往往患有不良位置.
研究的目的:
- 开发和验证一种有效的反向识别方法,用于对钢筋混凝土甲板的冲击力.
- 为了提高冲击本地化和时间历史重建的准确性.
- 为了解决结构影响分析中反向问题的错误性质.
主要方法:
- 应用Landweber代规范化方法用于冲击力识别.
- 将低通波器集成到Landweber程序中,以改善重建.
- 为准确性评估制定标准化重建错误指标.
- 使用高斯形状来自动定位冲击力.
主要成果:
- 提出的基于Landweber的方法成功地识别了冲击力,包括本地化和时间历史重建.
- 纳入低通波器显然增加了重建的准确性.
- 标准化错误指标为评估识别性能提供了可靠的手段.
- 在桥甲板上的实验验证证证了开发的技术的有效性.
结论:
- 用低通波器增强的Landweber方法提供了一种可靠且计算效率高的解决方案,用于在民用结构中识别冲击力.
- 拟议的技术在结构健康监测方面取得了重大进展,使得能够更好地评估影响事件.
- 正如研究中所讨论的那样,最佳的传感器放置和规则化代是成功识别影响的关键因素.
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