Impact of wind load increasing due to super gusty wind related withtyphoon and tornado on buildings

与缓慢上升的阵风情况相比，短上升时间的阵风作用于结构上的风力更大。这被称为风力超调。利用专用的风洞试验再现了超调现象，并通过超调系数将几个简单形状试件上的超调力与通常的风力进行了比较。通过对试验结果的数值模拟，揭示了超调力的产生机理，并通过对大风观测记录的分析，证明了风力超调是阵风损伤扩展的因素之一。

Compared with a case under a slowly rising gust, bigger wind force acting on a structure is generated under a short-rise-time gust. This is called the overshoot of wind force. The overshoot phenomenon was reproduced using a specially-equipped wind tunnel test and the overshoot force on several specimen of simple shape was compared with an usual wind force by the overshoot coefficient. The mechanism of the overshoot force was revealed by numerical simulation of the experimental results and it was proved that overshoot of wind force was one of the factors of gust damage expansion from analysis of strong wind observation record.