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埋地卧罐筒体附加外压计算

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Selected 储罐, 埋地.
  • 储罐
  • 埋地
  • 储罐
  • 埋地
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 依据:见注
埋地卧罐土层重力产生的外压计算
名称 单位 公式/来源 值
1 示意图
2 1
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14 输入
15  圆筒12点至地面的距离,Ho m 2.5
16  圆筒体外半径,Ro m 1.52
17  土层侧压系数,ko / 0.28
18  土层密度,γ kg/m³ 1650
19  外压放大系数,η / 1.3
20 过程
21  重力加速度,g m/s² g=9.81 9.81
22  12点深度,H m 1 2.5
23  3/9点深度,H m 1 4.02
24  6点深度,H m / 2.5
25  12点土层
竖向自重应力,σ
v
MPa 1 0.04046625
26  12点土层
侧向自重应力,σ
h
MPa σh=koσv 0.01133055
27  3/9点土层
竖向自重应力,σ
v
MPa 1 0.06506973
28  3/9点土层
侧向自重应力,σ
h
MPa σh=koσv 0.018219524
29  6点土层
竖向自重应力,σ
v
MPa 1 0.04046625
30  6点土层
侧向自重应力,σ
h
MPa σh=koσv 0.01133055
31 结果
32  12点土层
外压法向应力,σ
12
MPa 1 0.04046625
33  3/9点土层
外压法向应力,σ
3/9
MPa 1 0.018219524
34  6点土层
外压法向应力,σ
6
MPa 1 0.04046625
计算依据:《承压设备设计典型问题精解》[戴季煌][化学工业出版社][2010][第一版]
注:应对介质内压及埋地产生外压po等可能出现的最不利工况进行卧式容器的强度校核。
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