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A novel method for modal analysis of dam-reservoir systems | ||
| Civil Engineering Infrastructures Journal | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 05 شهریور 1402 اصل مقاله (2.55 M) | ||
| شناسه دیجیتال (DOI): 10.22059/ceij.2023.349505.1873 | ||
| نویسندگان | ||
| Mohammad Rezaiee-Pajand* 1؛ Mohammad Sadegh Kazemiyan2؛ Zahra Mirjalili3 | ||
| 1Ferdowsi University of Mashhad | ||
| 2Department of Civil Engineering, Eqbal Lahori Institute of Higher Education, Mashhad, Iran | ||
| 3Department of Civil Engineering, Ferdowsi University of Mashhad, Iran | ||
| چکیده | ||
| For dynamic modal analysis of the gravity dams, it is required to solve the non-symmetric eigenvalue problem which is a time-consuming process. This paper aims to propose a new procedure for this purpose. In this novel method, there is no need to solve the non-symmetric coupled eigenproblem. Instead, two novel eigenvalue problems are formulated and solved. They are simultaneously applied for dynamic modal analysis of concrete gravity dams. These are the cubic-symmetric forms of the corresponding non-symmetric eigenvalue problem, and they are entitled “cubic ideal-coupled eigenproblems”. Moreover, it is proved that the decoupled and ideal-coupled schemes presented in the previous works can be considered as special cases of the current more general procedure. For solving the aforesaid cubic eigenproblems, the classical subspace algorithm is generalized. To assess the accuracy of the suggested technique, it is employed for the dynamic analysis of two well-known benchmark gravity dams in the frequency domain. The responses of the dam crests are computed as a result of upstream and vertical excitations for two values of wave reflection coefficients. Then, the obtained results are compared with those of the decoupled and ideal-coupled approaches. | ||
| کلیدواژه‌ها | ||
| Concrete gravity dam؛ Fluid-structure interaction؛ Coupled method؛ Ideal-coupled method؛ Cubic ideal-coupled method | ||
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آمار تعداد مشاهده مقاله: 99 تعداد دریافت فایل اصل مقاله: 77 |
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