Three-way seismic design ground motion generation method combining orthogonalization and influence matrix method

A technology that affects matrix and seismic design. It is used in design optimization/simulation, special data processing applications, geometric CAD, etc. It can solve problems such as a large number of repetitive calculations, lack of theoretical basis, and long calculation time, and achieve rigorous calculation process and calculation. High efficiency and high precision matching effect

Pending Publication Date: 2021-03-16
JIANGNAN UNIV
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Problems solved by technology

The existing seismic design ground motion time history generation method mainly aims to match the time history response spectrum with the seismic design spectrum, and cannot satisfy the seismic time history matching accuracy in all directions while simultaneously realizing the seismic time history in different directions. Statistical independence between components
The above methods lack a theoretical basis in satisfying the statistical independence between time histories in different directions, and require a lot of repetitive calculations, which take a long time

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  • Three-way seismic design ground motion generation method combining orthogonalization and influence matrix method
  • Three-way seismic design ground motion generation method combining orthogonalization and influence matrix method
  • Three-way seismic design ground motion generation method combining orthogonalization and influence matrix method

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Embodiment Construction

[0023] The technical solutions of the present invention will be further described below with reference to the accompanying drawings.

[0024] Refer figure 1 A three-way seismic design seismic generating method of combining orthogonal and influence matrices, including the following steps:

[0025] (1) Put the initial seismic time course with Calculate the desired frequency range [f min , f max ] Is based on intrinsic function, and the horizontal and vertical target response spectrum with They are discrete at the M frequencies.

[0026] Specifically, horizontal target response spectrum And vertical target response spectrum Both are dispersion at the M frequency points, ie F 1 = F min , f 2 = F min+1 , ..., f M = F max . fly max And f min The frequency limit and lower limit of the target design spectrum are respectively. The three-way seismic acceleration of the selected duration T is recorded, respectively, using the intrinsic function to expand the initial acceleration time p...

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Abstract

The invention discloses a three-way seismic design ground motion generation method combining orthogonalization and an influence matrix method, and can be used in the field of structural seismic designand analysis. According to the method, perfect matching with a target spectrum is realized by utilizing an influence matrix method, and Gram Schmidt orthogonalization is introduced to realize that acorrelation coefficient between any two seismic oscillation components is zero, namely, statistical independence of components in any two directions is met. According to the method, the calculation process is rigorous, the calculation efficiency is high, and high-precision matching of the three-way seismic oscillation time history and the target design spectrum and statistical independence betweenevery two time history can be realized at the same time.

Description

Technical field [0001] The present invention relates to a structural seismic design and analysis method, and more particularly to a three-dimensional seismic design seismic method. Background technique [0002] In many earthquake resistance and standards, nonlinear dynamic time history response analysis is required to conduct nonlinear dynamic temporal response. The reliability of nonlinear power time response analysis is greatly affected by the three directional seismic timeout components selected. In order to meet the project requirements, first require the seismic design to match the seismic design response spectrum. In addition, the three-way seismic design time is also required to be independent of each other to avoid cancellation or enhancement effects between seismic components in different directions. [0003] The method or technique currently used to generate seismic design seismic movement is a lot, such as a time domain-frequency domain transform based on Fourier trans...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/20
CPCG06F30/13G06F30/20
Inventor 杨兰兰傅梓岳王登峰刘文化张聪
Owner JIANGNAN UNIV
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