Abstract Since overload has become the main potential safety hazard for aging bridges, management of traffic load information is of great significance in safety insurance of bridges. Here, an array of lead zirconium titanate (PZT) sensors is utilized to capture the dynamic responses of beam bridge due to moving load, for which the details are identified based on electromechanical analysis and structural dynamics. The precision and feasibility of the proposed method are validated by experimental tests for a simply supported and a continuous steel beam respectively. Results show that the PZT sensor has the advantage of self-driving, fast response and high precision, which makes it possible for wireless sensing technology. Results also reveal that dynamic responses of the beam can reflect effectively the moving speed and magnitude of the moving force when the load approaches to the mid-span. Furthermore, the proposed method is applicable for different beam structures and insensitive to the noise interference. The current method may provide guidance for bridge moving load identification.

中文翻译：

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使用压电传感器阵列识别梁桥上的移动质量

摘要 超载已成为老化桥梁的主要安全隐患，交通荷载信息的管理对于桥梁安全保险具有重要意义。在这里，一系列钛酸铅锆 (PZT) 传感器用于捕获由于移动载荷引起的梁桥的动态响应，其细节基于机电分析和结构动力学进行识别。分别通过简支梁和连续钢梁的试验验证了所提方法的精度和可行性。结果表明，PZT传感器具有自驱动、响应快、精度高等优点，使无线传感技术成为可能。结果还表明，当荷载接近跨中时，梁的动态响应可以有效地反映移动力的移动速度和大小。此外，所提出的方法适用于不同的梁结构并且对噪声干扰不敏感。目前的方法可以为桥梁移动荷载识别提供指导。