根据结构应变能等效,推导了大跨屋盖结构背景响应等效静力风荷载表达式,解决了大跨屋盖结构等效静力风荷载计算中需要兼顾多个等效目标的问题,并赋予了其明确的物理意义,即将其与脉动风荷载下结构的应变能联系起来。最后将该方法应用于国家体育场屋盖结构背景响应等效静力风荷载的计算以验证其有效性。 According to the equivalent of structural strain energy, the equivalent static wind load response of long-span roof structure is deduced. The equivalent static wind load calculation of long-span roof structure solves the problem of taking into account multiple equivalent targets, And gives it a clear physical meaning, that is, it is related to the strain energy of the structure under pulsating wind loads. Finally, the method is applied to the calculation of equivalent static wind load of the national stadium roof structure to verify its validity.