Identification of Natural Oscillation Modes for Purposes of Seismic Assessment and Monitoring of HPP Dams
- Авторлар: Kuz’menko A.1, Saburov S.1
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Мекемелер:
- Computer Equipment Design Technology Institute, Siberian Branch, Russian Academy of Sciences
- Шығарылым: Том 50, № 2 (2016)
- Беттер: 152-163
- Бөлім: Article
- URL: https://journals.rcsi.science/1570-145X/article/view/245128
- DOI: https://doi.org/10.1007/s10749-016-0676-9
- ID: 245128
Дәйексөз келтіру
Аннотация
The paper puts forward a method for processing data from detailed seismic assessments of HPP dams (dynamic tests). A detailed assessment (hundreds of observation points in dam galleries) is performed with consideration of operating dam equipment and the microseismic noise. It is shown that dynamic oscillation characteristics (natural oscillation frequencies and modes in the main dam axes, the velocities of propagation of elastic waves with given polarization, and so on.) can be determined with sufficient accuracy by using complex transfer functions and pulse characteristics. Monitoring data is processed using data from a detailed assessment, taking account of identified natural oscillation modes and determined ranges of natural frequencies. The spectra of characteristic frequencies thus obtained are used to choose substitution models and estimate the elastic characteristics of the “dam – rock bed” construction system, viz., the modulus of elasticity (the Young modulus), the Poisson ratio, the dam section stiffness with respect to shear, tension and compression and the elastic characteristics of the rock foundation.
Авторлар туралы
A. Kuz’menko
Computer Equipment Design Technology Institute, Siberian Branch, Russian Academy of Sciences
Хат алмасуға жауапты Автор.
Email: apkuzm@gmail.com
Ресей, Moscow
S. Saburov
Computer Equipment Design Technology Institute, Siberian Branch, Russian Academy of Sciences
Email: apkuzm@gmail.com
Ресей, Moscow