| 罐底提离时的下节点应力计算 |
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| 引用本文： | 陈世一.罐底提离时的下节点应力计算[J].油气储运,1998,17(2):18-21. |
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| 作者姓名： | 陈世一 |
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| 作者单位： | 抚顺石油学院 |
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| 摘 要： | 当安装于罐顶上的呼吸阀失灵，或罐内液体的汽化速度增大而又不能及时排放时，罐内的压力增高，部分罐底可能会离开基础而发生罐底提离现象。此时，在下节点处存在着较大的应力，甚至会造成油罐在下节蹼处的破坏。
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| 关 键 词： | 油罐 下节点 应力 计算 |
Calculation of Bottom Node Stresses in Oil Tank When Uplift Occurs due to Excessive Internal Pressure |
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| Chen Shiyi.Calculation of Bottom Node Stresses in Oil Tank When Uplift Occurs due to Excessive Internal Pressure[J].Oil & Gas Storage and Transportation,1998,17(2):18-21. |
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| Authors: | Chen Shiyi |
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| Abstract: | When breather vent attached on the tank roof does not work properly or vent capacities based on normal breathing is inadequate to cope with the increased rate of vaporization of the contained liquid,the internal pressure in the tank increase. As a result of the increase of internal pressure,part of the tank bottom may be raised from the foundation base,that is,uplift at the bottom occurs. The stresses increase and rupture may occure at the bottom-to-shell-joint or bottom node. The method of calculating bottom bending moment presented by J. B. Denham is not suitable for the situation. The paper presents the method for calculating bottom node stresses under the condition that uplift occurs due to excessive internal pressure in the tank. The influences of density,level of the contained liquid,and internal pressure on uplift and bottom node stresses are analyzed. |
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| Keywords: | oil tank bottom node stress calculation method |
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