75504 Magazine of Civil Engineering Magazine of Civil Engineering 2712-8172 7 10.5862/MCE.23.7 Determination the dynamic performance of structures contacting with water, on the example of the arch concrete dam of Sayano-Shushenskaya HPP Определение динамических характеристик сооружений, контактирующих с водой, на примере арочной бетонной плотины Саяно-Шушенской ГЭС 0000-0002-6877-8420 57204916380 B-6662-2019 Kozinetc Galina galina4410@yandex.ru Peter the Great Saint Petersburg Polytechnic University 08 09 2011 5 23 43 48

The article deals with the topical problem of determining associated water masses in the context of structure oscillation modes by means of solving the temperature problem.

The problem is considering the non-uniform distribution of associated water masses on upstream face in order to adequately determine the dynamic performance of a deformed structure. The method is implemented for the oscillation mode making the greatest contribution into the seismic load.

The results of solving this problem for the arch concrete dam of Sayano-Shushenskaya HPP are presented as an example.

The frequencies obtained for the constructed three-dimensional model “dam-foundation” are found to numerically correlate well with the frequencies of the actual dam structure. Associated water mass curves are constructed, dam frequency eigenvalues are determined with and without allowance for water effect.

 hydrodynamic pressure Westergaardt’s problem dynamic disturbance associated water mass Laplace equation Dalembertian principle temperature potential eigenvalues of frequency and oscillation mode