负风压

对于结构负风压，按规范计算的值比按统计方法得到的计算值大，应作为设计荷载。

The larger values should be used as the design load .

结构稳定，抗裂、抗震性好，无空腔构造设计，抗负风压能力强。

Structural stability , crack resistance , resistance to shock , and no cavity structure design , capable of negative air pressure .

根据分析结果，罩棚主要受力构件控制荷载工况为负风压作用工况及降温与重力荷载组合工况；

According to the results , the determining loads to the main member in the roof were wind load and lower temperature together with gravity load ;

在大跨度柱支承钢网格结构的橡胶支座中设置锚栓，能有效防止屋盖在极端情况（如罕遇地震、负风压）下脱离出支承柱。

Setting anchor bolts in laminated rubber bearings of large span column supported steel latticed structures can efficiently prevent the roofs from disengaging from the supporting columns in exceptional cases ( e.g. seldom occurred earthquake , wind suction ) .