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强风导致独立柱广告牌的破坏是城市不可忽视的安全隐患之一。利用CFD及有限元分析等方法对独立柱广告牌所受风荷载及变形进行了分析,结果表明,在对独立柱广告牌进行受力分析时,必须考虑来流方向因素导致的受力不均匀性。以独立柱广告牌的正常使用极限状态为目标,提出了一种综合考虑风速风向影响的广告牌风灾风险评估方法,以此来衡量独立柱广告牌在极端大风天气下可能的风灾风险程度,为此类广告牌的风灾评估提供技术支撑。
Strong wind led to the destruction of independent column billboard is one of the security risks that the city can not be ignored. The wind loads and deformations of the billboards with independent columns were analyzed by CFD and finite element analysis. The results show that in the force analysis of billboards with independent columns, it is necessary to consider the uneven force caused by the direction of flow Sex. Aiming at the normal use limit state of independent column billboards, a risk assessment method of billboard wind disaster considering the effect of wind speed and wind direction is proposed to measure the possible risk of wind disaster under the extreme windy weather. This type of billboards provide technical support for wind disaster assessment.