Design issues of wind-resistant rings for storage tanks
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Clause 6.4.1 of GB/T50341 only specifies that an anti-wind ring is required for open openings. But do closed storage tanks (such as those with fixed roofs) require wind resistance rings, and how can one determine whether they are needed? Thank you
In GB/T 50341, the requirement regarding whether wind girders are needed for closed tanks (such as those with fixed roofs) is not clearly defined; no specific criteria for determination are provided. Therefore, when designing closed storage tanks, it is necessary to take various factors into consideration to determine whether an anti-wind ring is required. These factors may include, but are not limited to, the following: 1. Tank structure: The structure and shape of a closed storage tank can affect its wind resistance. For example, fixed-roof storage tanks may already be designed to account for wind loads, while other types of closed storage tanks may require additional wind resistance measures. 2. Local climate conditions: The local climate conditions are also an important factor in determining whether a wind-resistant ring is needed. If the area where the tank is located is frequently affected by strong winds or tornadoes, it is necessary to enhance the tank’s wind resistance. 3. Safety requirements: Based on the properties of the substances stored in the tank and relevant safety requirements, it is necessary to assess and determine the extent of the impact of wind loads on the tank, in order to decide whether wind-resistant rings are required. In practical design, it is recommended to consult professional tank designers who can conduct a comprehensive analysis and assessment based on the specific circumstances, to ensure that the structural strength and stability of the tank meet the required standards and thus guarantee its safe operation. .
The fixed roof must be designed for external pressure; if necessary, add stiffening rings to the tank wall. The verification of these stiffening rings already takes wind pressure into account, so there is no need to verify the wind-resistant rings separately.
This post was last edited by wanlirn on 2023-7-10 at 12:15. Open-top tanks can deform when exposed to wind, which of course affects their safe operation; tanks with fixed roofs have lids, and thus are much more resistant to wind. . . .
For closed tanks, in addition to considering the installation of intermediate wind-resistant rings as specified in 6.4.3, if the external pressure conditions in Appendix B are met, it is necessary to design reinforcement rings at the top, middle, and bottom.
Factors considered when setting the reinforcement ring include external pressure, wind load, seismic load, etc