大高径比储罐的倾覆稳定性计算

Calculation of overturning stability of tank with large height to diameter ratio

在储罐设计过程中,当罐区平面布置受限时,一般都采用大高径比储罐。对于高径比大于1.6、容积小于100 m3的小型储罐,应通过计算确定储罐是否有倾倒的可能性。以某工程中的16座60 m3大高径比的拱顶罐为例,采用标准API 650—2013《钢制焊接石油储罐》对储罐的倾覆稳定性进行计算。通过计算,确定了储罐的倾覆稳定性满足API标准要求,不需增加锚固。API标准中的方法虽复杂,但考虑得更全面、具体,用其进行储罐的倾覆稳定性计算,结果更真实、可靠。

In the design of storage tanks, large height to diameter ratio will be adopted when the tank lay- out is limited. For the tanks with height to diameter ratio greater than 1.6 and the volume less than 100 m^3 , the calculation shall be performed to determine whether there is possibility of overturning. In a case study of sixteen 60 m^3 tanks, the overturning stability of tanks was calculated based upon standard API 650--2013 ＂Steel Welded Tanks＂. The calculation shows that the overturning stability of thanks meets the requirement of API standard and no additional anchoring is needed. The calculation method in API standard is more compre- hensive and specific although it is more complicated. The calculation results are more realistic and reliable.