湿式煤气柜顶架网壳结构稳定性分析

STABILITY ANALYSIS OF THE RETICULATED SHELL ON THE TOP OF DISH GAS HOLDER

针对湿式煤气柜顶架网壳结构负压失稳问题 ,采用几何非线性有限元法对湿式煤气柜顶架通常应用的肋环型网壳结构进行了稳定性分析 ,并归纳弹性屈曲临界压力计算公式和单杆计算长度的计算方法。

Aimed at the buckling of a reticulated shell on the top of the dish gas holder,which was caused by negative pressure,a geometrically nonlinear finite element method is adopted to analyse the stability of the ribbed shell that is usually used for the top of a dish gas holder.A formula of elastic critical pressure of the general buckling and calculation method of member effective length for the ribbed shells are attained.