Paradigm of Numerical Simulation of Spatial Wind Field for Disaster Prevention of Transmission Tower Lines

Q2 Engineering SDHM Structural Durability and Health Monitoring Pub Date : 2023-01-01 DOI:10.32604/sdhm.2023.029850

Yongxin Liu, Puyu Zhao, Jianxin Xu, Xiaokai Meng, Hong Yang, Bo He

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Abstract

Numerical simulation of the spatial wind field plays a very important role in the study of wind-induced response law of transmission tower structures. A reasonable construction of a numerical simulation method of the wind field is conducive to the study of wind-induced response law under the action of an actual wind field. Currently, many research studies rely on simulating spatial wind fields as Gaussian wind, often overlooking the basic non-Gaussian characteristics. This paper aims to provide a comprehensive overview of the historical development and current state of spatial wind field simulations, along with a detailed introduction to standard simulation methods. Furthermore, it delves into the composition and unique characteristics of spatial winds. The process of fluctuating wind simulation based on the linear filter AR method is improved by introducing spatial correlation and non-Gaussian distribution characteristics. The numerical simulation method of the wind field is verified by taking the actual transmission tower as a calculation case. The results show that the method summarized in this paper has a broader application range and can effectively simulate the actual spatial wind field under various conditions, which provides a valuable data basis for the subsequent research on the wind-induced response of transmission tower lines.

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输电塔线路空间风场防灾数值模拟范式

空间风场的数值模拟对于研究输电塔结构的风致响应规律具有十分重要的意义。合理构建风场数值模拟方法，有利于研究实际风场作用下的风致响应规律。目前，许多研究都是将空间风场模拟为高斯风，往往忽略了空间风场的基本非高斯特征。本文旨在全面概述空间风场模拟的历史发展和现状，并详细介绍了标准模拟方法。进一步探讨了空间风的组成和独特特征。通过引入空间相关性和非高斯分布特性，改进了基于线性滤波AR方法的脉动风模拟过程。以实际输电塔为算例，验证了风场的数值模拟方法。结果表明，本文总结的方法具有更广泛的应用范围，可以有效地模拟各种条件下的实际空间风场，为后续输电塔线路的风致响应研究提供了有价值的数据基础。

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来源期刊

SDHM Structural Durability and Health Monitoring Engineering-Building and Construction

CiteScore

2.40

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0.00%

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期刊介绍： In order to maintain a reasonable cost for large scale structures such as airframes, offshore structures, nuclear plants etc., it is generally accepted that improved methods for structural integrity and durability assessment are required. Structural Health Monitoring (SHM) had emerged as an active area of research for fatigue life and damage accumulation prognostics. This is important for design and maintains of new and ageing structures.