System identification of concrete arch dam using frequency domain and time-frequency domain methods
Publish place: 4th International Conference on long-Term Behavior and Environmentally Friendly Rehabilitaion Technologies of Dams
Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
LTBD04_003
تاریخ نمایه سازی: 25 آذر 1396
Abstract:
System identification is an effective and important method in health monitoring of structures especially in long term behaviors. It looks after any changes such as cracking or abutment instability in the behavior of structure. There are several methods of system identification which investigate dynamic parameters of the structure and each of them has advantages and disadvantages. The results in system identification process are reliable when it is done by several records and similar results are achieved. In this article, dynamic parameters of double curved Karun III dam was identified by different methods and different records. Peak Picking (PP), Frequency Domain Decomposition (F DD) and Wavelet Transform (WT) methods are used to identify the natural frequencies and extracting damping ratios of the Karun III dam. The similarity of the results for different records and different methods proves that the results are reliable.
Authors
arman roshanravan
PhD student, Faculty of Civil Engineering, University of Urmia
mohammad manafpour
Assistant Professor, Faculty of Civil Engineering, University of Urmia
hesaneh ghanbari
MSc of Hydraulic Structures, Faculty of Civil Engineering, University of Tabriz