Safety estimation method for an industrial special steel cable assembly

A safe and special technology, applied in the field of safety assessment of industrial special steel cable components, can solve the problems of serious time-consuming, difficult to meet engineering needs, large amount of calculation, etc., to achieve less time-consuming, reduce algorithm complexity, and evaluation accuracy high effect

Active Publication Date: 2019-11-05
NAVAL UNIV OF ENG PLA
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  • Application Information

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Problems solved by technology

[0003] At present, the safety assessment method applied to industrial steel cable components mainly regards the built-in unit of the steel cable as an m / n type binary (complete, fault) safe state system, and then according to the life of the built-in unit of the steel cable in the sense of engineering statistics distribution characteristics, the implementation of safety assessment of steel cable components, this method can better achieve safety assessment, but with the development of industry, the number of built-in special steel cable components is increasing (such as the number of built-in steel wire units>100), For special steel cables with a large number of units, this safety assessment method is too computationally intensive and time-consuming, and it is increasingly difficult to meet engineering needs

Method used

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  • Safety estimation method for an industrial special steel cable assembly
  • Safety estimation method for an industrial special steel cable assembly
  • Safety estimation method for an industrial special steel cable assembly

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Experimental program
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Effect test

Embodiment 1

[0016] see figure 1 , a schematic flow chart of a method for evaluating the safety of an industrial special steel cable assembly provided in Embodiment 1 of the present invention, including:

[0017] S101. Constructing the physical model, mathematical model and system coupling model of the m / n type load-bearing special steel cable assembly respectively;

[0018] In the m / n type load-bearing special steel cable assembly, by the physical model of the special steel cable assembly, it is assumed that the special steel cable assembly is composed of n built-in strand units stacked, for a large number of steel cable assemblies (such as n> 100), the safety level of each strand unit i, 1≤i≤n, directly affects the safety level of the entire special steel cable assembly, and the general safety risk requirements of related projects are: steel cables are built into n strand units , at least m strand units should be kept within the acceptable safety risk range at all times.

[0019] Optio...

Embodiment 2

[0069] figure 2 , image 3 The schematic diagrams for comparing the risk amount of the limit sequence kernel algorithm and the traditional analysis algorithm provided by the embodiment of the present invention and the comparison diagram of the safety error are respectively. On the basis of the first embodiment, a specific example is used to perform the operation of safety assessment through the limit sequence kernel. The performance is described in detail:

[0070] Assuming n = 150, m = 75, λ = 0.2 / a, for m / n type special steel cable assemblies whose built-in strand element risk conforms to the homogeneous exponential distribution, the safety assessment is realized by using the traditional method and the limit sequence kernel respectively The performance analysis of these two methods:

[0071] When the traditional safety analysis algorithm is used to solve the m / n type load-bearing special steel cable assembly, its quantitative analysis expression is:

[0072]

[0073] ...

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Abstract

The invention relates to a safety estimation method for an industrial special steel cable assembly, and belongs to the field of engineering safety. The method comprises the following steps: respectively constructing a physical model, a mathematical model and a system coupling model of m / n types of force-bearing special steel cable assemblies; determining constraint conditions of the safety limit sequence kernel of the special steel cable assembly, constructing a limit sequence kernel constant for safety evaluation of the special steel cable assembly according to the constraint conditions of the limit sequence kernel, and achieving binding of the limit sequence kernel in the safety evaluation of the special steel cable assembly; and resolving and reversely decompressing the special steel cable assembly according to the binding relationship of the safety limit sequence core in safety evaluation of the special steel cable assembly, and performing safety evaluation on the special steel cable assembly based on a resolving result and a reverse decompressing result. According to the scheme, safety evaluation can be rapidly and accurately carried out, the algorithm complexity of a traditional evaluation method is reduced, and the time consumption of calculation is reduced.

Description

technical field [0001] The invention relates to the field of engineering safety, in particular to a method for evaluating the safety of an industrial special steel cable assembly. Background technique [0002] In various industrial installations or large-scale industrial systems, industrial steel cables are widely used as key components, such as wharf freight hoisting, military special tensioning devices, and some shopping malls transfer devices, park amusement devices, etc. will be applied to steel cables. In order to ensure the safe use of these devices or systems, industrial steel cables must be guaranteed to have a long enough service life when they are manufactured, and the safety assessment of the main load-bearing steel cables must be carried out before they are officially put into use. [0003] At present, the safety assessment method applied to industrial steel cable components mainly regards the built-in unit of the steel cable as an m / n type binary (complete, faul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q10/06G06Q50/04
CPCG06Q10/0635G06Q10/067G06Q50/04Y02P90/30
Inventor 史跃东钱超陈凤林
Owner NAVAL UNIV OF ENG PLA
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