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Development study of new criteria of wind environment on the Sea of Japan side that is prevailing seasonal wind in winter

冬季盛行季风的日本海一侧风环境新标准的制定研究

基本信息

批准号：
08555145
负责人：
AKABAYASHI Shin-ich
金额：
$ 1.47万
依托单位：
Niigata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08555145/
关键词：
The Sea of Japan side Wind flow around buildings Wind environmental assessment Field measurement investigation Questionnaire survey Numerical simulation 風環境風洞実験

项目摘要

This research is described by proposal new criteria for the wind environment. A technique of the research does actual measurement investigation and questionnaire survey and a wind tunnl experiment for wind environment assessment in Niigata City.It is difficult to using usual criteria for the Pacific side on the Sea of Japan side, because is compared with the Pacific side, the frequency that a strong wind blows on the Sea of Japan side by the influence of the seasonal wind of winter. Wind speed is-speeding up the current in the street which in between two residences and in exfoliation current in the roof. This is obvious fact for the field measurement, wind tunnel experiment and the numerical analysis.By the questionnaire survey for inhabitant, when they are difficult to put up an umbrella, they feel the strong wind. And when they have difficulty in walking, it gives the wind an unpleasant feeling. The permissible range of the new criteria for the wind environment is lager than in Tokyo.Allowable days against the day maximum moment wind 10m/s, 15m/s, the strong wind beyond 20m/s are 102day 21day 4days respectively in a residential zone.It was adapted to the applicable residential zones, when it set up windbreak before a wind environment is a rank 3 arca, and when it is set up the windbreak after, the environment was evaluated declined to rank 2 or rank 1. Thus it is clearly that the criteria of wind environment is suitable.

本研究通过提出风环境的新标准来描述。在新泻市进行了实测调查、问卷调查和风洞实验，对风环境进行了评价。日本海一侧的太平洋一侧，由于受冬季季节风的影响，与太平洋一侧相比，日本海一侧的强风频率较高，因此难以使用通常的标准。风速对两户住宅之间的街道气流和屋顶的剥落气流有加速作用。通过对居民的问卷调查，发现当他们遇到打伞困难时，他们会感受到强风的存在。当他们行走困难时，它给风一种不愉快的感觉。新标准的风环境允许范围比东京都大，住宅区日最大瞬间风10 m/s、15 m/s、大于20 m/s的强风允许天数分别为102天、21天、4天，适用于3级风环境前设置防风林的住宅区，而当设置防风林后，环境评价下降到2级或1级。由此可见，风环境的标准是合适的。