背景和共振分量在风振时频域计算中的分离方法

张军锋

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背景和共振分量在风振时频域计算中的分离方法

更新时间：2025-09-25

- 背景和共振分量在风振时频域计算中的分离方法
- A Method of Separating the Background and Resonant Components of Wind Dynamic Effects in Time Domain
- 防灾减灾工程学报 2020年第3期页码：365-371
- 作者机构：
  
  郑州大学土木工程学院,河南,郑州,450001
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目(51508523)资助
- DOI：
  中图分类号： TU33+2;TU271.1
- 纸质出版：2020
- 稿件说明：
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张军锋,刘庆帅,杨军辉,涂保中.背景和共振分量在风振时频域计算中的分离方法[J].防灾减灾工程学报,2020,(3):365-371

ZHANG Junfeng. A Method of Separating the Background and Resonant Components of Wind Dynamic Effects in Time Domain[J]. 2020, (3): 365-371.
张军锋,刘庆帅,杨军辉,涂保中.背景和共振分量在风振时频域计算中的分离方法[J].防灾减灾工程学报,2020,(3):365-371 DOI：

ZHANG Junfeng. A Method of Separating the Background and Resonant Components of Wind Dynamic Effects in Time Domain[J]. 2020, (3): 365-371. DOI：

摘要

为深入分析结构风振响应时域计算结果，提出了一种在时域计算中分离背景和共振分量的方法。在结构动力响应频域和时域计算理论分析的基础上，分别以弹簧振子和悬臂杆件这两个单、多自由度结构的风振响应为例，通过时域计算对所提出的方法进行了验证，并与传统的频域结果进行了对比。经理论分析和单自由度算例验证对比，证实所提出的方法概念清晰且简单有效，可以从总动力响应时程中准确分离得到纯粹的共振响应时程，并且对多自由度结构也可得到准确的共振分量。另外，对风振计算中的背景和共振耦合分量也进行了分析。

Abstract

To further interpret the dynamic results in time domain

a method of separating the background and resonant components in time domain is proposed. Based on the theory of dynamic calculation in frequency and time domains

the proposed method is examined through a SDOF oscillator and a MDOF cantilever beam under dynamic wind actions

and the results are also compared with those from the calculation in frequency domain. According to the theoretical analysis and example illustration

it is proved that with clear concept and simple application

the new method can separate the resonant component from the total dynamic responses precisely for MDOF structures. Moreover

the coupling component between the background and resonant components is also studied.

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