Structural Health Monitoring of Bridges based on Vision Method Using Shiny Targets
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
View: 186
This Paper With 15 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
این Paper در بخشهای موضوعی زیر دسته بندی شده است:
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JSEE-22-3_005
تاریخ نمایه سازی: 20 شهریور 1401
Abstract:
In this study, a displacement monitoring technique using an economy camera based on the vision-based method is proposed and developed. The structural displacement can be extracted by utilizing an ordinary shiny device that is attached to one of the elements of the structure and monitoring its motion by an economy video camera. In the proposed vision-based methodology, shiny targets such as LED targets are used to obtain more high-quality images with higher contrast that lead to getting better displacement recording from the captured video. First, a LED centroid recognition and scaling method are described to obtain the time history of structural movements due to the ambient vibration. Next, the natural frequencies of the structure can be determined by utilizing different classical system identification methods in the frequency domain and time domain, like the Peak Picking method and the SSI method. Finally, as a case study, the proposed methodology used for the Tabiat bridge in Tehran, which is a three-dimensional steel truss bridge for pedestrians over a heavy traffic highway, the results are compared with those obtained from the high-accurate and expensive wireless seismic sensors. The results show that although the vision-based proposed technique is a fast and low-cost method, it can investigate the dynamic characteristics of the structure with reasonable precision.
Keywords:
Authors
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :