Effects of turbulent wind on exposed flexible structures
湍流风对裸露柔性结构的影响
基本信息
- 批准号:RGPIN-2018-05237
- 负责人:
- 金额:$ 2.26万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2022
- 资助国家:加拿大
- 起止时间:2022-01-01 至 2023-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Current structural engineering practice continues to rely extensively on static analysis methods for design. The performance-based design approach introduced in recent years still relies heavily on past methods, essentially accepting traditional limit-states design solutions as acceptable solutions, and leaving the issues of security and integrity to the interpretation of designers. Most extreme environmental loads have dynamic effects on exposed structures, and consideration of failure or progressive collapse scenarios cannot generally ignore those dynamic effects when predicting structural response. As widely acknowledged in seismic design of structures, true performance-based design is based on reliable and reasonably accurate response prediction that is rarely feasible with simplified static analysis methods. Wind velocity profiles and pressure loads on exposed structures of rather complex shapes are difficult to predict, which explains why until very recently physical testing in boundary-layer wind tunnel tests has been the preferred method to assess wind loads on structures of complex geometry and components. In situ wind pressure monitoring is also used on important civil projects and numerous experimental studies have been conducted on overhead line conductors by various electric utilities in the world, but it is fair to state that physical wind-tunnel testing results are the main reference material of drag force calculations on structures in most modern codes and standards. The goal of this research program is to assess the accuracy/adequacy of (and eventually improve) the simplified static load methods described in various codes of practice and design guidelines to predict the response of exposed structures to environmental load effects such as turbulent wind, atmospheric icing, and combined wind and ice effects. Canadian regulations are targeted in the process, such as those of the National Building Code of Canada (NBC) - Commentary I Wind Load and Effects and in Canadian Standards Association CSA S37 on Antennas, Towers and Antenna-supporting structures, but the scope is extended to encompass similar methods used in international OHL design standards and for exposed transportation signage structures. The scientific approach will combine a critical review of available experimental results (from wind-tunnel tests and/or monitoring, old and modern-era) and advanced computational mechanics techniques using structural dynamics and fluid dynamics. In particular, fluid-structure interactions will be examined, both for bare and iced flexible structures in simulated realistic turbulent wind conditions. The impact and significance of the research program are far reaching. The immediate results of the research will eventually lead to updating (or confirmation) of the NBC recommendations, which will impact on other national and international design practice.
当前的结构工程实践继续广泛依赖于设计的静态分析方法。 近年来引入的基于绩效的设计方法仍然很大程度上取决于过去的方法,基本上接受传统的极限态设计解决方案作为可接受的解决方案,并将安全性和完整性问题留在设计师的解释中。大多数极端的环境负荷对裸露的结构具有动态影响,并且在预测结构响应时,考虑到失败或进行性崩溃方案通常不能忽略这些动态影响。正如在结构的地震设计中得到广泛认可的那样,真正的基于性能的设计基于可靠且合理准确的响应预测,而简化的静态分析方法很少是可行的。很难预测到相当复杂的结构上的风速曲线和压力负载,这解释了为什么在边界层风隧道测试中进行了最近的物理测试,这是评估复杂几何和组件结构的风负载的首选方法。在重要的民事项目上还使用了原位风压监测,世界各种电力公司已经对架空线导体进行了许多实验研究,但公平地说,物理风隧道测试结果是大多数现代代码和标准标准中结构的拖曳力量计算的主要参考材料。该研究计划的目的是评估(并最终改善)在各种实践和设计指南中描述的简化静态负载方法的准确性/充分性,以预测暴露结构对环境负荷效应的响应,例如湍流风,大气糖化,并结合风和冰。加拿大法规是针对此过程的,例如《加拿大国家建筑法典》(NBC) - 评论I风力负载和效果以及加拿大标准协会CSA S37在天线,塔楼和支持天线支持结构的CSA S37中,但范围扩展到包含国际OHL OHL类似方法用于国际OHL的运输标准和实用的运输范围。 科学方法将结合对使用结构动力学和流体动力学的高级计算力学技术的可用实验结果(来自风洞测试和/或监测,旧和现代)的批判性综述。特别是,将检查流体结构的相互作用,用于模拟逼真的湍流风条件下的裸露和冰柔性结构。研究计划的影响和意义已达到远处。研究的直接结果最终将导致NBC建议的更新(或确认),这将影响其他国家和国际设计实践。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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McClure, Ghyslaine其他文献
Dynamic characteristics of light-frame wood buildings
- DOI:
10.1139/cjce-2017-0266 - 发表时间:
2019-01-01 - 期刊:
- 影响因子:1.4
- 作者:
Hafeez, Ghazanfarah;Doudak, Ghasan;McClure, Ghyslaine - 通讯作者:
McClure, Ghyslaine
A novel approach to evaluate the equivalent dynamic stiffness of guy clusters in telecommunication masts under ground excitation
- DOI:
10.1016/j.engstruct.2011.02.015 - 发表时间:
2011-05-01 - 期刊:
- 影响因子:5.5
- 作者:
Oskoei, S. Ali Ghafari;McClure, Ghyslaine - 通讯作者:
McClure, Ghyslaine
Uncertainty in fundamental period estimates leads to inaccurate design seismic loads
- DOI:
10.1139/l11-055 - 发表时间:
2011-08-01 - 期刊:
- 影响因子:1.4
- 作者:
Gilles, Damien;McClure, Ghyslaine;Chouinard, Luc E. - 通讯作者:
Chouinard, Luc E.
Dynamic analysis of an overhead transmission line subject to gusty wind loading predicted by wind-conductor interaction
- DOI:
10.1016/j.compstruc.2012.12.022 - 发表时间:
2013-06-01 - 期刊:
- 影响因子:4.7
- 作者:
Keyhan, Hooman;McClure, Ghyslaine;Habashi, Wagdi G. - 通讯作者:
Habashi, Wagdi G.
The Time-Varying Characteristics of Overhead Electric Transmission Lines Considering the Induced-Ice-Shedding Effect
考虑诱导冰脱落效应的架空输电线路时变特性
- DOI:
10.1155/2015/635230 - 发表时间:
2015-07 - 期刊:
- 影响因子:1.6
- 作者:
Li, Lin;Zhou, Chao;Liu, Chen;McClure, Ghyslaine - 通讯作者:
McClure, Ghyslaine
McClure, Ghyslaine的其他文献
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{{ truncateString('McClure, Ghyslaine', 18)}}的其他基金
Effects of turbulent wind on exposed flexible structures
湍流风对裸露柔性结构的影响
- 批准号:
RGPIN-2018-05237 - 财政年份:2021
- 资助金额:
$ 2.26万 - 项目类别:
Discovery Grants Program - Individual
Effects of turbulent wind on exposed flexible structures
湍流风对裸露柔性结构的影响
- 批准号:
RGPIN-2018-05237 - 财政年份:2020
- 资助金额:
$ 2.26万 - 项目类别:
Discovery Grants Program - Individual
Effects of turbulent wind on exposed flexible structures
湍流风对裸露柔性结构的影响
- 批准号:
RGPIN-2018-05237 - 财政年份:2018
- 资助金额:
$ 2.26万 - 项目类别:
Discovery Grants Program - Individual
Improved consideration of dynamic loads and effects in design of exposed structures
在裸露结构的设计中改进了对动态载荷和效应的考虑
- 批准号:
121270-2013 - 财政年份:2017
- 资助金额:
$ 2.26万 - 项目类别:
Discovery Grants Program - Individual
Improved consideration of dynamic loads and effects in design of exposed structures
在裸露结构的设计中改进了对动态载荷和效应的考虑
- 批准号:
121270-2013 - 财政年份:2015
- 资助金额:
$ 2.26万 - 项目类别:
Discovery Grants Program - Individual
Improved consideration of dynamic loads and effects in design of exposed structures
在裸露结构的设计中改进了对动态载荷和效应的考虑
- 批准号:
121270-2013 - 财政年份:2014
- 资助金额:
$ 2.26万 - 项目类别:
Discovery Grants Program - Individual
Advanced computational modelling for vibration mitigation in guyed towers
用于减轻拉线塔振动的先进计算模型
- 批准号:
396079-2009 - 财政年份:2013
- 资助金额:
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Collaborative Research and Development Grants
Workplan for assessment of seismic behaviour of EIFS building façade systems
EIFS 建筑立面系统抗震性能评估工作计划
- 批准号:
446603-2013 - 财政年份:2013
- 资助金额:
$ 2.26万 - 项目类别:
Engage Grants Program
Improved consideration of dynamic loads and effects in design of exposed structures
在裸露结构的设计中改进了对动态载荷和效应的考虑
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- 资助金额:
$ 2.26万 - 项目类别:
Discovery Grants Program - Individual
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加拿大东部学校和医院的震后功能
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396464-2010 - 财政年份:2012
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$ 2.26万 - 项目类别:
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Effects of turbulent wind on exposed flexible structures
湍流风对裸露柔性结构的影响
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RGPIN-2018-05237 - 财政年份:2021
- 资助金额:
$ 2.26万 - 项目类别:
Discovery Grants Program - Individual
Effects of turbulent wind on exposed flexible structures
湍流风对裸露柔性结构的影响
- 批准号:
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- 资助金额:
$ 2.26万 - 项目类别:
Discovery Grants Program - Individual
Effects of turbulent wind on exposed flexible structures
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Effects of turbulent wind on exposed flexible structures
湍流风对裸露柔性结构的影响
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RGPIN-2018-05237 - 财政年份:2018
- 资助金额:
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