LNG储罐吊顶结构特定工况下安全性分析

Safety Analysis of LNG Storage Tank Suspended Deck under Specif ic Working Conditions

为了分析吊顶在吊杆失效情况下,吊顶结构的安全性,通过采用有限元计算,对吊杆失效的最不利工况进行分析,给出了吊顶结构应力和位移分布,并依据规范对结构安全性进行了分析。结果表明:当吊杆失效时,最大应力出现在失效吊杆最近两侧的吊杆;对于每环吊杆最大应力,失效前后一致;按照规范EN14620,吊杆失效最不利工况满足要求,结构安全。

In order to analyze the safety of the suspended deck in the case of suspenders failure,the worst conditions of the suspender failure are analyzed by using f inite element calculation,the stress and displacement distribution of the suspended deck are given,and the safety of the structure is analyzed according to the standards.The results show that when the suspenders fail,the maximum stress appears on the nearest side of the suspenders.The maximum stress of each ring is consistent before and after suspenders failure.According to code EN14620,the worst condition of suspenders failure meets the requirements and the structure is safe.