Artificial seismic simulation method for aseismic design of hydraulic structures based on hydropower projects

A technology for hydraulic structures and seismic design, applied in design optimization/simulation, calculation, electrical digital data processing, etc. Effect

Inactive Publication Date: 2018-12-14
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
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Problems solved by technology

Although the existing technology has done some preliminary research work on the code for seismic design of hydraulic structures in hydropower projects, it cannot meet the new requirements proposed by the codes for seismic design of hydraulic structures in hydropower projects.

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  • Artificial seismic simulation method for aseismic design of hydraulic structures based on hydropower projects
  • Artificial seismic simulation method for aseismic design of hydraulic structures based on hydropower projects
  • Artificial seismic simulation method for aseismic design of hydraulic structures based on hydropower projects

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Embodiment Construction

[0041] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0042] Such as figure 1 and figure 2 As shown, the artificial earthquake simulation method based on the seismic design of hydropower engineering hydraulic structures is characterized in that it includes the following steps:

[0043] S1: Select several damping ratios and corresponding β to the damping ratios max The standard design response spectrum of is used as the target spectrum, and the target spectrum is discretized...

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Abstract

The invention discloses an artificial seismic simulation method based on the aseismic design of a hydraulic structures of hydropower projects, which comprises the following steps: selecting a standarddesign response spectrum as a target spectrum, discretizing the target spectrum, generating an initial seismic wave by a frequency domain method, performing iterative correction on the initial seismic wave by a time domain method, and performing iterative correction on the initial seismic wave by a frequency domain-time domain hybrid iterative method to determine whether the accuracy is satisfied, to determine whether three artificial seismic waves are generated, and to determine correlation coefficients. According to the requirements of the code for seismic design of hydraulic structures ofhydropower projects and the seismic design of hydraulic structures of hydropower projects, the artificial seismic simulation method based on the seismic design of hydraulic structures of hydropower projects is completed in this scheme, which has strong pertinence. The invention overcomes the limitation of poor convergence of the existing time domain method, and the artificial seismic wave generated by the invention has good convergence and high convergence precision.

Description

technical field [0001] The invention relates to the technical field of artificial earthquake simulation, in particular to an artificial earthquake simulation method based on the seismic design of hydraulic structures in hydropower projects. Background technique [0002] In the seismic calculation and model test of hydraulic structures, seismic wave analysis is essential. There are two ways to obtain seismic waves, one is to directly use strong earthquakes recorded by strong motion instruments, and the other is to generate artificially synthesized seismic waves. In the case of relatively few actual seismic records, it is very necessary to use artificial seismic waves. Spectrum fitting The synthesis of artificial seismic waves was first completed by the Massachusetts Institute of Technology. Here, the phase spectrum of the ground motion is considered to be uniformly distributed, and the amplitude spectrum is mainly adjusted to fit the response spectrum. Because this method wa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/20
Inventor 张伯艳
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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