大型卧式储罐鞍座应力分析

Stress Analysis of Saddle Support of a Large Horizontal Storage Tank

１前言在大型卧式容器中，支座处的筒体截面是一个危险截面，在外载荷与支座反力作用下，筒体会在一定程度上出现“扁塌”现象，并由此导致筒体受力不均匀，特别是弯曲应力明显增加。对于鞍式支座，筒体的外伸端长度和载荷作用下的“扁塌”都会影响其受力状态。在常规的卧...

Abstract This paper presents stress analysis of a saddle support of a large horizontal storage tank for storing liquified carbon dioxide.It is found that for a multi-rib saddle support,the compressive stress on the outside rib is much larger than that on other ribs and web plate.When the ratio A/L of the extended length A over the total cylinder length L is in the range of 0 19～0 21,the stress distribution in the suport is more reasonable.A reinforced ring on the cylinder in the support area can not only greatly reduce the“collapse”and stresses in the cylindrical shell near the support,but also,in some extent,improve the stress distribution of the support.Comparisons between conventional calculation and finite element evaluation for some stresses are also availabel in this paper.