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Large liquid storage tank structure safety assessment method

A technology of safety and construction method, which is applied in the field of structural safety assessment of large-scale liquid storage tanks to achieve the effects of ensuring reliability, improving accuracy and improving effectiveness

Active Publication Date: 2021-05-28
中国人民解放军火箭军工程大学
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For this reason, the present invention provides a kind of structural safety evaluation method of large liquid storage tank, in order to overcome the structural safety evaluation method of large liquid storage tank in the prior art problem of accuracy

Method used

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  • Large liquid storage tank structure safety assessment method
  • Large liquid storage tank structure safety assessment method
  • Large liquid storage tank structure safety assessment method

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Embodiment Construction

[0066] In order to make the objects and advantages of the present invention clearer, the present invention will be further described below in conjunction with the examples; it should be understood that the specific examples described here are only for explaining the present invention, and are not intended to limit the present invention.

[0067] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

[0068] It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "inner", "outer" and other indicated directions or positional relationships are based on the terms shown in the accompanying drawings. The direction or positional relationship shown is ...

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Abstract

The invention relates to a large liquid storage tank structure safety assessment method, which comprises the following steps: firstly, performing finite element analysis on internal and external factors which influence the health of a liquid storage tank structure by combining a mechanical principle, and constructing a structure health mechanism simulation model; secondly, constructing a structure safety evaluation model based on a belief rule base and capable of simultaneously processing various types of uncertainty qualitative and quantitative information by utilizing a mechanism simulation result, an industrial standard and expert domain knowledge; and finally, generating structure damage samples under different working conditions by using the structure health mechanism simulation model, making up the defect that a structure safety sample set is incomplete, and training the structure safety evaluation model by using the structure damage samples. The method can be used for guaranteeing the structural health of the large liquid storage tank and effectively preventing dangerous states such as deformation, inclination, cracking and collapse. According to the method, mechanism knowledge and observation data are fully fused, and the method can be applied to the safety assessment problem of the liquid storage tank in various related fields.

Description

technical field [0001] The invention relates to the technical field of structural safety assessment of large liquid storage tanks, in particular to a structural safety assessment method for large liquid storage tanks. Background technique [0002] With the rapid development of the global economy and the strategic needs and production needs of the aerospace, petrochemical and other industries, the volume of liquid storage tanks in my country continues to rise, and large storage tanks have become an inevitable trend. As a large-scale industrial structural part with a thin-walled structure, the large-scale liquid storage tank has a large diameter-thickness ratio and low rigidity, and is prone to various structural deformations under external effects such as foundation settlement and storage tank inclination, resulting in the storage tank Accidents such as leakage and explosion of flammable liquids in the fuel tank will cause serious economic and environmental losses. Therefore...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/27G06F111/04
CPCG06F30/23G06F30/27G06F2111/04
Inventor 周志杰陈媛胡冠宇胡昌华杨立浩曹友
Owner 中国人民解放军火箭军工程大学
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