Wind Effects on Buildings and their Codification

风对建筑物的影响及其编码

• 批准号: RGPIN-2017-06728
• 负责人: Stathopoulos, Theodore
• 金额: $ 3.72万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=690289
• 关键词: Wind; Effects; Buildings; their; Codification

The applicant's research in the area of wind effects on buildings and their codification has been influential in the development of wind standards and building codes of practice not only in Canada but also in other countries. The proposal for this discovery grant intends to continue or initiate experimental and computational research in the following areas:***- Wind pressure loads on buildings of different plan view shapes such as L-shape, T-shape, trapezoidal and the like. Cladding, secondary and primary structural system loads, with particular emphasis on torsion, will be evaluated and presented in a simplified form suitable for incorporation in design standards and codes of practice. A detailed innovative methodology has been proposed for this study.***- Wind pressures on solar panels located on building roofs or on the ground.***Rows or arrays of solar panels are used extensively on building roofs or on the ground but wind loads on them are not known due to the difficulties in their evaluation. In fact, there is a large discrepancy in the results of previous studies. It is thus critical to establish realistic loads for solar panel design and incorporate them in wind design standards and codes of practice for the benefit of all building design professionals.***- Effects of topography and upstream exposure characterization on wind loads on buildings.***Characterization of an exposure based on upstream terrain roughness and different topographies is a weak link in the wind loading chain because of the great variety of configurations including all non-homogeneous (transition/interruption) cases.***- Wind pressures on buildings under the influence of non-synoptic winds such as downdrafts, tornadoes and the like.***Recent wind-induced damages were caused by severe weather extreme events such as local strong downdrafts or tornadoes and other non-stationary winds. It is therefore proposed to study the effects of such wind systems on the loading function of buildings and investigate the possibility that different wind pressures may be recommended by the wind standards and codes of practice for these cases.***All experiments will take place in the Concordia University's atmospheric boundary layer wind tunnel, which is unique in the province of Quebec.***The research outcome of the applicant's research program will be useful to the profession (structural design professionals, practicing engineers and architects) either directly (through specific design guidelines) or indirectly (through provisions in wind standards and building codes of practice) and to other researchers in the field.

申请人在风对建筑物的影响及其编纂方面的研究不仅在加拿大，而且在其他国家都对风标准和建筑业务守则的制定产生了影响。这项发现拨款的提案意在继续或启动以下领域的实验和计算研究：*-L、T形、梯形等不同平面图形状建筑物的风压荷载。将评估包层、二次和主要结构系统载荷，特别强调扭转，并以适合纳入设计标准和实施准则的简化形式提出。这项研究提出了一种详细的创新方法。*-位于建筑物屋顶或地面上的太阳能电池板的风压。*太阳能电池板排或阵列广泛用于建筑物屋顶或地面，但由于评估困难，其上的风荷载尚不清楚。事实上，以往的研究结果存在很大的差异。因此，为太阳能电池板设计确定实际负荷，并将其纳入风力设计标准和实践规范，以造福于所有建筑设计专业人员，这是至关重要的。*-地形和上游曝露特性对建筑物风荷载的影响。*基于上游地形粗糙度和不同地形的曝光量特性是风载荷链中的薄弱环节，因为包括所有非均匀(过渡/中断)情况的各种构型。*-建筑物在非天气风影响下的风压，例如下沉气流，龙卷风等。*近期风灾是由局地强下沉气流或龙卷风等恶劣天气极端事件和其他非定常大风造成的。因此，建议研究这种风系统对建筑物承载功能的影响，并调查这些情况下不同风压可能被风标准和实践规范推荐的可能性。*所有实验将在魁北克省独一无二的康科迪亚大学大气边界层风洞中进行。*申请人研究计划的研究成果将直接(通过特定设计指南)或间接(通过风标准和建筑实践规范中的规定)和该领域的其他研究人员有用。