دوره 11، شماره 4 - ( 8-1400 )                   جلد 11 شماره 4 صفحات 646-631 | برگشت به فهرست نسخه ها

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Shabankhah S, Heidari A, Kamgar R. OPTIMUM LEVEL OF DISCRETE WAVELET DECOMPOSITION FOR DYNAMIC ANALYSIS OF HYDRAULIC STRUCTURES. International Journal of Optimization in Civil Engineering 2021; 11 (4) :631-646
URL: http://ijoce.iust.ac.ir/article-1-498-fa.html
OPTIMUM LEVEL OF DISCRETE WAVELET DECOMPOSITION FOR DYNAMIC ANALYSIS OF HYDRAULIC STRUCTURES. عنوان نشریه. 1400; 11 (4) :631-646

URL: http://ijoce.iust.ac.ir/article-1-498-fa.html


چکیده:   (5339 مشاهده)
Seismic analysis of structures is a process for estimating the response of structures subjected to earthquakes. For this purpose, the earthquake ­is analyzed using the wavelet theory. In this paper, the primary signal of the earthquake is decomposed through a discrete wavelet transform, and their corresponding response spectrum is obtained. Then, the percentage difference between the decomposed signals and the main one is computed. Therefore, for different earthquakes, a comparison between the response spectrum is studied in various types of dams. The acceleration, velocity, and displacement responses are computed and compared to achieve an appropriate level of decomposition, which can be used instead of the primary signal. Therefore, the decomposition process leads to attaining acceptable accuracy as well as low computational cost. The investigation revealed that the acceleration, velocity, and displacement responses spectrum are suitable up to the third level of decomposition for the small and medium dams, whereas for large dams, up to the fifth level of decomposition is suitable.
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نوع مطالعه: پژوهشي | موضوع مقاله: Applications
دریافت: 1400/8/26 | پذیرش: 1400/8/28 | انتشار: 1400/8/28

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