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Improved Method of Determination of Basic Wind Speed with Terrain Effects Using Graph Neural Network
| 题名： | Improved Method of Determination of Basic Wind Speed with Terrain Effects Using Graph Neural Network |
| 正文语种： | eng |
| 作者： | Donghyeok Lee;Byeonguk Ahn;Seung Yong Jeong;Thomas H.-K. Kang |
| 作者单位： | Seoul National Univ.;Seoul National Univ.;Seoul National Univ.;Seoul National Univ. |
| 关键词： | Basic wind speed;Topography;Surface roughness;Satellite image;Observation data;Deep learning;Graph neural network (GNN) |
| 摘要： | Abstract In determining wind loads when designing buildings—especially high-rise buildings—wind speed is a critical factor. With increased progression of city high-rise construction, accurate prediction has become ever more important. Many factors, such as local climates, roughness of surrounding conditions, and terrain, may affect wind speed. But among all factors considered, terrain has a very large influence. Difficulties in reflecting the influence of terrain on wind speed include (1) collecting topographic data information; (2) quantitatively evaluating terrain features; and (3) expressing specific area relationships with surrounding observation stations. This paper poses means to solve these limitations by (1) using satellite imagery to gather topographic information; (2) evaluating terrain quantitatively with convolutional neural network (CNN)–based encoders; and (3) employing a graph neural network (GNN) to estimate the wind speed relationship of an arbitrary place to that of observation stations. Herein, a machine learning model utilizing the aforementioned means was proposed. To support this model, an experiment was conducted using observed wind speed data in Korea. Throughout the experiment, previous studies were used to compare results with ratification of the posed model. Given the submitted findings, further research and investigation to establish correlation with other experimental case results are proposed. |
| 出版年： | 2023 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 149 |
| 期： | 1 |
| 页码： | 1-11 |
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