Development and experimental validation of smartphone-based tools to assess mechanical tension forces in guy wires of transmission towers

基于智能手机的工具的开发和实验验证，用于评估输电塔拉线的机械张力

• 批准号: 507631-2016
• 负责人: Bouaanani, Najib
• 金额: $ 5.04万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=645874
• 关键词: Development; experimental; validation; smartphone; based

Steel overhead towers are among the critical components of Hydro-Québec's extensive power transmission network. The tension within guy wires supporting power transmission steel lattice towers has to be regularly verified to ensure safe operation and adequate structural performance. The main objective of this research project is to develop and experimentally validate a quick, reliable and rigorous technique to measure the tension within guy wires using smartphones. Most promising available procedures for assessing tension forces within cables will be identified and applied to actual case studies of guyed lattice towers. Finite element models of guyed lattice towers will be built and used to perform dynamic analyses to evaluate the influence of most critical parameters contributing to wire tension force. Two types of smartphones will be selected depending on the operating systems (OS) and the programming environment. They will be used to implement analytical formulations for estimation of tension force in vibrating guy wires based on measured acceleration data. The tension force within guy wires tested in the laboratory will be assessed. The smartphone will be attached to the guy wire using a fastener designed specifically for this purpose. The acceleration time histories recorded by tri-axial accelerometers and smartphone during free vibration of the guy wires will be compared to assess the accuracy and potential limitations of the smartphone built-in accelerometers. The smartphone applications developed will be used to extract frequency data and predict actuator-controlled tension forces within the tested guy wires. The tension force in the guy wires of selected guyed towers will be assessed in-situ using the programmed smartphones and validated against load cell measures. User interfaces that enhance effective and quick operation of the developed smartphone applications will be programmed and tailored to the needs of end users. The proposed vibration-based technique will be implemented into Hydro-Québec's asset management programs. A user manual describing the smartphone application developed and a step-by-step illustration of its correct and effective use for different categories of guy wires will be provided.

钢制高架塔是Hydro-Québec广泛的电力传输网络的关键组成部分。必须定期验证支撑电力钢晶格塔的盖伊电线内部的张力，以确保安全操作和足够的结构性能。该研究项目的主要目的是开发和实验验证一种快速，可靠和严格的技术，以测量使用智能手机内部电线内的张力。将确定评估电缆内张力的最有希望的可用程序，并将其应用于男子晶格塔的实际案例研究。将建立并用于进行动态分析的有限元模型，以评估导致电线张力力的最关键参数的影响。将根据操作系统（OS）和编程环境选择两种类型的智能手机。它们将用于实施分析公式，以根据测量的加速度数据在振动Guy电线中估算张力。将评估在实验室测试的Guy电线内的张力。智能手机将使用专门为此目的而设计的紧固件连接到Guy电线上。将比较由三轴加速度计和智能手机记录的加速度历史记录，以评估智能手机内置加速度计的准确性和潜在局限性。开发的智能手机应用程序将用于提取频率数据并预测测试的Guy电线内的执行器控制的张力。选定人员的盖伊电线中的紧张力量将使用编程智能手机在原位进行评估，并根据负载电池测量进行验证。将对最终用户的需求进行编程和量身定制的增强开发智能手机应用程序的有效和快速操作的用户界面。拟议的基于振动的技术将在Hydro-Québec的资产管理计划中实施。将提供描述开发智能手机应用程序的用户手册，并提供对其在不同类别的Guy电线的正确和有效用途的分步插图。