Anti-seismic characteristic simulation calculation method for improving response spectrum excitation response synthesis

Abstract

The invention discloses an anti-seismic characteristic simulation calculation method for improving response spectrum excitation response synthesis, and belongs to the technical field of anti-seismic design and safety performance evaluation analysis. The method comprises the following calculation steps: carrying out response spectrum envelope and interpolation calculation on corresponding damping coefficients under different earthquake dynamic loads; establishing a three-dimensional entity geometric model; setting the node group and the contact surface group; providing load combination and working conditions; performing boundary constraint and load application; performing mesh generation and independence inspection; performing simulation calculation and response synthesis; evaluating evaluation criteria and results; performing joint bolt or weld check. According to the invention, simultaneous excitation response synthesis of three spatial orthogonal components is embodied as simultaneous same-position response combination of any position of the model, so that the maximum structural response is more reasonable, the evaluation of the total calculation result is more conservative, thereserve coefficient and the reliability are higher, green calculation is realized, large-batch anti-seismic characteristic calculation can be quickly and effectively completed, and therefore, a manufacturing supplier can take corresponding improvement or preventive measures in time, and the accuracy of anti-seismic safety performance evaluation is improved.

Description

technical field [0001] The invention belongs to the technical field of anti-seismic design and safety performance evaluation and analysis, and in particular relates to an anti-seismic characteristic simulation calculation method for improving response spectrum excitation response synthesis. Background technique [0002] Nuclear power lifting machinery is an important part of nuclear power plant items. It is mainly used for lifting high-risk goods or loads in nuclear power plants, lifting and transporting other equipment, such as nuclear ring cranes in reactor buildings, fuel handling cranes, spent fuel containers or Spent fuel pool cranes, etc., not only have specific installation locations and special functions, but also have corresponding safety classification and seismic requirements. ) Earthquake load to ensure that it maintains extremely high safety and reliability under extreme earthquake action. When nuclear power plants encounter major earthquake events, their overa...

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Problems solved by technology

In 2015, the patent No. 201510072241.1 "Simulation Calculation Method for Checking Seismic Characteristics of Nuclear Power Hoisting Machinery" compared and analyzed the deficiencies of the published literature, improved load combination conditions, response analysis and synthesis methods, etc., and proposed a usable The simulation calculation method is based on engineering evaluation, but the calculation workload, long calculation time, and high energy consumption of the simulation analysis using the response spectrum components one by one to stimulate the response synthesis cannot meet the development requirements of today's green computing, especially in large-scale nuclear power plants below 40t. In the calculation of the seismic characteristics of the plant's hoisting machinery, how to ensure the quality and quantity of the seismic characteristics calculation requirements and safety performance evaluation is directly related to the delivery deadline of the manufacturing supplier and the construction period of the nuclear power plant.

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