Development and validation of a test method to assess the wind-induced response of span wire traffic signal systems

IF 2.7 Q2 ENGINEERING, CIVIL

Sustainable and Resilient Infrastructure Pub Date : 2022-10-05 DOI:10.1080/23789689.2022.2123143

I. Zisis, M. Matus, B. Hajra, P. Irwin

引用次数: 0

Abstract

ABSTRACT To better understand the wind-induced response of span-wire traffic signal systems a full-scale experimental study was carried out using two testing apparatuses: a short-span test frame with coil springs installed at either side of the wires and a long-span test frame. An analytical model was developed to select the appropriate coil spring stiffness that will allow the short-span frame to match the static and dynamic behaviour of the long-span frame. Results showed good agreement between the two test frames for the total drag, total lift and inclinations experienced by the traffic signals. The two test frames also agreed well in identifying the critical wind speed for the onset of aerodynamic instability, which for some signal and hanger configurations was as low as 30 m/s.

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一种评估跨线交通信号系统风致响应的测试方法的开发和验证

为了更好地理解跨线交通信号系统的风致响应，采用两种测试装置进行了全尺寸试验研究:一种是在导线两侧安装螺旋弹簧的短跨度测试架，另一种是大跨度测试架。开发了一个分析模型，以选择合适的线圈弹簧刚度，使短跨度框架能够匹配大跨度框架的静态和动态行为。结果表明，两种测试框架对交通信号所经历的总阻力、总升力和倾斜度有很好的一致性。两种测试框架在确定空气动力学不稳定性开始的临界风速方面也很一致，对于一些信号和挂架配置，其风速低至30米/秒。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sustainable and Resilient Infrastructure ENGINEERING, CIVIL-

CiteScore

7.60

自引率

10.20%

发文量

期刊介绍： Sustainable and Resilient Infrastructure is an interdisciplinary journal that focuses on the sustainable development of resilient communities. Sustainability is defined in relation to the ability of infrastructure to address the needs of the present without sacrificing the ability of future generations to meet their needs. Resilience is considered in relation to both natural hazards (like earthquakes, tsunami, hurricanes, cyclones, tornado, flooding and drought) and anthropogenic hazards (like human errors and malevolent attacks.) Resilience is taken to depend both on the performance of the built and modified natural environment and on the contextual characteristics of social, economic and political institutions. Sustainability and resilience are considered both for physical and non-physical infrastructure.