Simulation method for over-wave impact of nuclear power plant breakwater based on hybrid model

Abstract

The invention discloses a nuclear power plant breakwater overtopping impact simulation method based on a mixed model. The method includes the following steps that at first, a three-dimensional entity finite element model of a fine structure of a breakwater is established; secondly, a breakwater structure rigid body model and a neighboring environment entity model are established; thirdly, initial stress is added to the established three-dimensional mixing finite element model of the nuclear power plant breakwater to simulate the initial operating condition to obtain the initial state of the nuclear power plant breakwater under the action of gravity and seawater pressure; finally, after distribution of initial stress of the nuclear power plant breakwater is obtained, the impact state and the overtopping state of the nuclear power plant breakwater under the action of waves are obtained, and integral simulation of the breakwater is achieved. According to the method, simulation analysis of numerical simulation of the super-large-scale nuclear power plant breakwater is achieved, response rules of an overall model can be contained, meanwhile local structures can be finely analyzed, local dangerous positions are obtained, and reference bases are provided for engineering design of the nuclear power plant breakwater.

Description

technical field [0001] The invention relates to a method in the technical field of nuclear power plant breakwater construction, in particular to a method for simulating the surge impact of nuclear power plant breakwaters based on a mixed model. Background technique [0002] In recent decades, as an efficient and clean energy source, nuclear power has developed rapidly, and the number of new nuclear power plants around the world has been steadily increasing. While making full use of this new type of energy, nuclear power, its possible dangerous consequences have gradually been paid attention to by human beings. For safety reasons, the design standards of nuclear power plant breakwaters have more stringent requirements. When rare weather or disasters occur, such as typhoon surges or tsunamis, high tides and huge waves will be generated in the sea area around the nuclear power plant. When a huge wave hits the breakwater, causing damage to structures such as the wave-retaining...

AI Technical Summary

Problems solved by technology

This kind of method simulates the surface protection structure of the breakwater as a fixed boundary of the fluid. Although it can simulate the process of climbing, rolling and overcoming wave impact of waves, it cannot obtain the overall wave overtaking condition of the breakwater and the stress-strain condition of vulnerable structures. great limitations

Therefore, there is currently no mature numerical simulation method that can achieve both global analysis and local accurate analysis of breakwaters in super-large-scale nuclear power plants.

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