В данной работе проводился комплексный численный расчет бетонной плотины, как гидротехнического инженерного сооружения, часто подверженного сейсмическим воздействиям. Цель исследования заключалась в определении поведения плотины при сейсмической нагрузке и ее способности противостоять разрушениям. В расчете учитывались несколько факторов, влияющих на поведение плотины. Прежде всего, учитывалось статическое давление воды, находящейся в водохранилище. Это давление может оказывать значительное воздействие на плотину, особенно при сейсмических событиях. Дополнительно, был учтен собственный вес бетонной плотины. Это важный параметр, который влияет на распределение статических напряжений и деформаций в конструкции. Также в расчете было учтено распространение волн в среде водохранилища. Вода моделировалась с использованием конечных и бесконечных акустических элементов, которые обеспечивают учет неотражения волн, что является существенным фактором при моделировании поверхностей воды и их взаимодействия с плотиной. Граничные условия оказывают значительное влияние на напряженно-деформированное состояние плотины. Были заданы различные граничные условия, в том числе неотражающие границы, такие как двойная асимптотическая граница и вязкая граница в основании системы, которые позволяют точнее описать взаимодействие плотины с окружающей средой и получить более приближенные к реальности результаты. Численные расчеты проводились в программном пакете SIMULIA ABAQUS (Dassault Systèmes).

In this work, a complex numerical calculation of a concrete dam was carried out, as a hydraulic engineering structure, often subject to seismic effects. The aim of the study was to determine the behavior of the dam under seismic loads and its ability to resist failure. The calculation took into account several factors that affect the behavior of the dam. First of all, the static pressure of the water in the reservoir was taken into account. This pressure can have a significant effect on the dam, especially during seismic events. Additionally, the self-weight of the concrete dam was taken into account. This is an important parameter that affects the distribution of static stresses and strains in the structure. The calculation also took into account the propagation of waves in the reservoir medium. The water was modeled using finite and infinite acoustic elements that account for non-reflection of waves, which is an essential factor when modeling water surfaces and their interaction with a dam. Boundary conditions have a significant impact on the stress-strain state of the dam. Various boundary conditions were specified, including non-reflecting boundaries such as a double asymptotic boundary and a viscous boundary at the base of the system, which make it possible to more accurately describe the interaction of the dam with the environment and obtain more realistic results. Numerical calculations were carried out in the software package SIMULIA ABAQUS (Dassault Systèmes). In this work, a complex numerical calculation of a concrete dam was carried out, as a hydraulic engineering structure, often subject to seismic effects. The aim of the study was to determine the behavior of the dam under seismic loads and its ability to resist failure. The calculation took into account several factors that affect the behavior of the dam. First of all, the static pressure of the water in the reservoir was taken into account. This pressure can have a significant effect on the dam, especially during seismic events. Additionally, the self-weight of the concrete dam was taken into account. This is an important parameter that affects the distribution of static stresses and strains in the structure. The calculation also took into account the propagation of waves in the reservoir medium. The water was modeled using finite and infinite acoustic elements that account for non-reflection of waves, which is an essential factor when modeling water surfaces and their interaction with a dam. Boundary conditions have a significant impact on the stress-strain state of the dam. Various boundary conditions were specified, including non-reflecting boundaries such as a double asymptotic boundary and a viscous boundary at the base of the system, which make it possible to more accurately describe the interaction of the dam with the environment and obtain more realistic results. Numerical calculations were carried out in the software package SIMULIA ABAQUS (Dassault Systèmes).