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Engineering Review of Wind-Induced Torsional Moment and Response of Buildings
| 题名： | Engineering Review of Wind-Induced Torsional Moment and Response of Buildings |
| 正文语种： | eng |
| 作者： | Hamidreza Alinejad;Thomas H.-K. Kang;Seung Yong Jeong;Byeonguk Ahn |
| 作者单位： | Seoul National Univ.;Seoul National Univ.;Seoul National Univ.;Seoul National Univ. |
| 关键词： | Torsional-wind load;Aerodynamic;Eccentricity;Interference;Architectural Institute of Japan-recommendations for loads on buildings (AIJ-RLB);ASCE;Australian and New Zealand standard (AS/NZS);Korean design standard (KDS);ISO |
| 摘要： | Abstract For building service and strength design under wind load, torsional moment and response (or torsional-wind load) is a main component. Several factors contribute to torsional-wind load, including asymmetric distribution of wind pressure on the building façade (aerodynamic source), dynamic torsional vibration, and the contribution of resonant components of along-wind and across-wind loads in presence of mass-stiffness eccentricity. In addition, adjacent building influence can be considerable. For low (1 or 2 stories) to midrise (less than 10 stories) buildings, the main component in torsional-wind load typically is aerodynamic source. For tall buildings, contribution due to all sources is significant. In this article, theoretical background and procedures to calculate torsional-wind load, with a focus on the concept of equivalent eccentricity and equivalent static wind load, are discussed. Then, procedures and perspectives in several international standards, including ASCE 7-22, Architectural Institute of Japan-recommendations for loads on buildings (AIJ-RLB-2015), Australian and New Zealand Standard (AS/NZS 1170.2-2011), Korean Design Standard (KDS 41-2019), and ISO 4354-2009, are introduced to clarify differing points of view and how components of torsional-wind load are included. Finally, the main parameters of each standard are compared with wind tunnel test results. The results confirm consistency between the wind tunnel test results and those based on the standards with consideration of their covered ranges. |
| 出版年： | 2023 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 149 |
| 期： | 11 |
| 页码： | 1.1-1.17 |
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