A safety assessment method for industrial special steel cable assemblies

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

Active Publication Date: 2021-03-12
NAVAL UNIV OF ENG PLA
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  • Claims
  • 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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  • A safety assessment method for industrial special steel cable assemblies
  • A safety assessment method for industrial special steel cable assemblies
  • A safety assessment method for industrial special steel cable assemblies

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0018] In the m / n type load-bearing special steel cable assembly, the physical model of the special steel cable assembly assumes that the special steel cable assembly is composed of n built-in strand units stacked, and 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. Generally, the relevant engineering safety risk requirements are: the steel cable is built into n strand units , at least m strand units should be maintained, which are always within the acceptable safety risk range.

[0019] Opti...

Embodiment 2

[0069] figure 2 , image 3 The schematic diagram of the comparison of the risk amount of the limit sequence checking algorithm and the traditional analytical algorithm and the comparison diagram of the safety error provided by the embodiment of the present invention are respectively. The performance is described in detail:

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

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

[0072]

[0073] When using the limit sequence check method to solve the m / n type load-bearing special steel cable assembly, its quantitative analyt...

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Abstract

The invention relates to a method for evaluating the safety of an industrial special steel cable assembly, which belongs to the field of engineering safety. The method includes: respectively constructing the physical model, the mathematical model and the system coupling model of the m / n type load-bearing special steel cable assembly; determining the constraint conditions of the safety limit sequence kernel of the special steel cable assembly, and constructing according to the constraint conditions of the limit sequence kernel Limit sequence kernel constants for the safety assessment of special steel cable assemblies, and realize the binding of limit sequence kernels in the safety assessment of special steel cable assemblies; according to the safety limit sequence kernel in the safety assessment of special steel cable assemblies The binding relationship is calculated and reversely decompressed for special steel cable components, and the safety assessment of special steel cable components is performed based on the calculation results and reverse decompression results. Through this solution, security assessment can be performed quickly and accurately, the algorithm complexity of traditional assessment methods is reduced, and the time-consuming calculation is reduced.

Description

technical field [0001] The invention relates to the field of engineering safety, in particular to a safety evaluation method for 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 terminal 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 safety of these devices or systems, industrial steel cables must have a long enough service life when they are manufactured, and the main load-bearing steel cables must be evaluated for safety before they are officially put into use. [0003] At present, the safety assessment method applied to industrial steel cable assemblies is mainly to regard the built-in element of the steel cable as an m / n binary (good, fault) safe state system, and then based o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06Q10/06G06Q50/04G06F119/14
CPCG06Q10/0635G06Q10/067G06Q50/04Y02P90/30
Inventor 史跃东钱超陈凤林
Owner NAVAL UNIV OF ENG PLA
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