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: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=712352
• 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领域的研究不仅对加拿大而且对其他国家的风标准和建筑实践规范的制定产生了影响。这项发现拨款的提案旨在继续或启动以下领域的实验和计算研究： -L型、T型、梯形等不同平面形状的建筑物上的风压荷载。覆层、次要和主要结构系统载荷，特别是扭转，将以适合纳入设计标准和实践规范的简化形式进行评估和呈现。本研究提出了详细的创新方法。 - 位于建筑物屋顶或地面上的太阳能电池板的风压。 成排或成排的太阳能电池板广泛用于建筑物屋顶或地面，但由于评估困难，其上的风荷载未知。事实上，之前的研究结果存在很大差异。因此，为了所有建筑设计专业人员的利益，建立太阳能电池板设计的实际负载并将其纳入风力设计标准和实践规范至关重要。 - 地形和上游暴露特征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暴露特征是风荷载链中的薄弱环节，因为配置多种多样，包括所有非均质（过渡/中断）情况。 - 在非天气风（例如下沉气流、龙卷风等）影响下对建筑物的风压。 最近的风灾是由局部强下沉气流或龙卷风等恶劣天气极端事件造成的。因此，建议研究此类风系统对建筑物荷载功能的影响，并研究风标准和实践规范针对这些情况推荐不同风压的可能性。 所有实验都将在康考迪亚大学的大气边界层风洞中进行，该风洞在魁北克省是独一无二的。 申请人研究项目的研究成果将直接（通过具体的设计指南）或间接（通过风力标准和建筑实践规范的规定）对专业（结构设计专业人员、执业工程师和建筑师）以及其他研究人员有用在外地。