Artificial wave response spectrum fitting calculation method based on multi-phase spectrum iteration

A calculation method, multi-phase technology, applied in the direction of calculation, computer components, complex mathematical operations, etc., can solve problems such as inability to converge, and achieve the effect of reducing the impact of convergence accuracy

Active Publication Date: 2021-01-29
CHONGQING UNIV
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Problems solved by technology

[0004] The present invention provides a multi-phase spectrum iterative artificial wave response spectrum fitting calculation method. Aiming at the problems existing in the artificial seismic wave of the envelope design response spectrum fitted by the traditional frequency domain method, when the Fourier amplitude spectrum is iterated, The

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  • Artificial wave response spectrum fitting calculation method based on multi-phase spectrum iteration
  • Artificial wave response spectrum fitting calculation method based on multi-phase spectrum iteration
  • Artificial wave response spectrum fitting calculation method based on multi-phase spectrum iteration

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[0027] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the The descriptions and diagrams are illustrative in nature and not limiting of the invention.

[0028] An artificial wave response spectrum fitting calculation method for multiphase spectrum iteration, comprising the following steps,

[0029] S1: will design the response spectrum S D (ω k ) into a power spectral density function And get the corresponding Fourier amplitude spectrum A 0 (ω k ), where, ω k Indicates the sampling frequency, and makes the number of samples equal to K, k=1, 2, ..., K; using the empirical formula between the response spectrum and the power spectral density function to design the response spectrum S D (ω k ) into a power spectral densi...

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Abstract

The invention provides an artificial wave response spectrum fitting calculation method based on multi-phase spectrum iteration, and aims at solving the problems existing in artificial seismic waves ofa traditional frequency domain method fitting envelope design response spectrum, when Fourier amplitude spectrum iteration is carried out, R * 10 groups of random phase spectrums are generated and R* 10 artificial waves are generated in the R-th iteration, and the R * 10 groups of random phase spectrums are calculated. Iteration is carried out by using an error between the average value of the reaction spectrums corresponding to the artificial waves and the designed reaction spectrum, so that the condition that the final fitting result of the random phase spectrum cannot be converged is avoided. In the process of designing the reaction spectrum through frequency domain method fitting, a multi-phase spectrum matrix is mainly used, a single and invariant phase spectrum is not used any more, a complex Fourier phase spectrum is used for each iteration, and the influence of the random phase spectrum of the artificial wave on the convergence precision of a final fitting result is also reduced.

Description

technical field [0001] The invention relates to the technical field of artificial seismic wave synthesis, in particular to a multiphase spectrum iteration artificial wave response spectrum fitting calculation method. Background technique [0002] Fitting the artificial seismic wave according to the design response spectrum is an important method to determine the input seismic wave in the dynamic analysis of structural seismic design at home and abroad. The traditional frequency-domain method to fit the design response spectrum has been widely used in the field of structural earthquake resistance (Chen Yongqi, Liu Xihui, Gong Sili. Artificial seismic waves fitting the standard response spectrum[J]. Journal of Building Structures, 1981(04): 34 -43.), the process requires a random Fourier phase spectrum, and the value of the random Fourier phase spectrum will greatly affect the final result. [0003] However, the influence of the phase spectrum on the final generated artificia...

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Application Information

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IPC IPC(8): G06F17/16G06F17/14G06F17/15G06K9/00
CPCG06F17/16G06F17/14G06F17/15G06F2101/04G06F2218/00
Inventor 谢皓宇仉文岗洪利黎泳钦邹育麟
Owner CHONGQING UNIV
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