Assess the impact of high winds on structures, transport and vegetation.
大风影响评估以平均风速与阵风风速代入蒲福风级(风速与等级的非线性查表),阵风等级 windWarning 给出预警等级;阵风系数=阵风÷平均风,系数越大结构风振越显著,对广告牌、塔吊、行道树与高空作业风险越高,需结合等级落实加固与停运措施。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Beaufort scale | 0–17 scale (12 classic + extension) | GB/T 28591-2012 |
| Dynamic pressure | q = 0.5ρv² | Fluid dynamics |
| Wind pressure | w = μs·μz·w0 | GB 50009-2012 §8 |
| Impact classes | Beaufort impact mapping | Beaufort effects |
| Gust factor | βgz 1.28–1.65 by terrain | GB 50009-2012 §8.6 |
| Warning signals | Blue/yellow/orange/red signals | QX/T warning signal standard |
大风影响评估工具依据蒲福风级(Beaufort Scale)标准,输入平均风速和阵风风速,自动判定风力等级,计算阵风系数,并根据阵风强度对应大风预警等级,给出陆地和海面影响描述。