Fine simulation method of wind spectrum model

A simulation method and wind spectrum technology are applied in the field of accurate simulation of wind spectrum models in wind resistance analysis of engineering structures, achieving wide application prospects and reducing errors.

Inactive Publication Date: 2009-07-08
SOUTHEAST UNIV
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Problems solved by technology

[0006] Technical problem: The purpose of this invention is to create a fine simulation method of wind spectrum model based on field measured results. This technology applies segmental simulation to the fitting of wind spectrum model, and solves

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  • Fine simulation method of wind spectrum model
  • Fine simulation method of wind spectrum model
  • Fine simulation method of wind spectrum model

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[0024] According to the above technical solution, the fine simulation technology of the wind spectrum model based on the measured wind characteristics and its realization process include the following 4 steps:

[0025] 1) Conduct a large number of strong / typhoon field measurements during the strong / typhoon period;

[0026] There are two actual measurement methods. One is to pay attention to the weather forecast and estimate the time for the typhoon to pass through the structure site during the typhoon every year. Prepare in advance and bring a precision measuring instrument—anemometer to the site for installation. According to the structure (we The focus is generally on the characteristics of the long-span bridge structure, and the appropriate measurement location is selected. For the long-span bridge structure, which is generally mid-span or the top of the tower, install the anemometer and bracket in place and measure the height of the anemometer (or extend it away from the struc...

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Abstract

The invention relates to a fine simulation method for a wind spectrum model. The method is to solve the problem of large error between a fitting wind spectrum model and an actually-measured wind spectrum model so as to more accurately simulate the wind spectrum model adopted in the wind resistance analysis of an engineering structure. Firstly, mass actually-measured data of wind property is subjected to power spectrum analysis to obtain the actually-measured wind spectrum model; secondly, an inflection point and the position of the actually-measured wind spectrum model are found out in a frequency domain; according to the inflection point, the wind spectrum model is divided into sections in the frequency domain; and finally, each section of the wind spectrum model is subjected to fitting respectively. Obviously, the wind spectrum model obtained by subsection fitting is more inosculated with the actually-measured wind spectrum; wind load born by an obtained structural object also more meets actual situation; therefore, the wind spectrum model can be more accurately and reliably applied to wind resistance design of the engineering structure.

Description

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Claims

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Application Information

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Owner SOUTHEAST UNIV
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