Health monitoring method for cable system in cable structure

A technology of health monitoring and cable structure, applied in the field of damaged cables, can solve the influence of the health status, and also affected by the health status of other cables, and the problem of unfavorable identification of damaged cables.

Inactive Publication Date: 2008-12-10
SOUTHEAST UNIV
View PDF0 Cites 104 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as far as a single cable is concerned, the change of its cable force has a clear and monotonous relationship with its health status (damage degree), but when the cable is a cable structure (especially a large cable structure, such as a large cable-stayed, suspension bridge ) cable system, since the change of the cable force of each specific cable is not only affected by its own health status, but also affected by the health status of other cables, so

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Health monitoring method for cable system in cable structure
  • Health monitoring method for cable system in cable structure
  • Health monitoring method for cable system in cable structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] Aiming at the health monitoring of cable systems of cable structures (especially large cable structures, such as large cable-stayed bridges and suspension bridges), the present invention discloses a method that can reasonably and effectively monitor the health status of each cable in the cable system of cable structures. systems and methods. The following descriptions of embodiments of the invention are merely exemplary in nature, and are in no way intended to limit the application or uses of the invention.

[0049] The present invention employs an algorithm for monitoring the health status of the cable system (all cables) in cable structures, especially large cable structures, such as large cable-stayed bridges, suspension bridges. During specific implementation, the following steps are one of various steps that may be taken.

[0050] The first step: Determine the numbering rule of the cable, and number all the cables according to this rule. This number will be used ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a health monitoring method used for a cable system in a cable structure which carries out a plurality of mechanical calculations based on the mechanical calculation benchmark model of a structure; the calculation times are equal to the quantities of the cables. In each calculation, one cable is supposed to have unit damage; the result for each calculation forms vector for calculating a current cable force; a cable force change vector is obtained by using the vector for calculating the current cable force to subtract an initial cable force vector; all the cable force change vectors form a cable force change identity matrix. The noninferior solution of the current damage vector of the cable can be fast calculated by utilizing proper arithmetic such as multi-target optimizing arithmetic according to the approximating linear relation of the current cable force vector (formed by all the current cable forces that are actually detected), the cable force change identity matrix, a unit damage scalar and the current cable damage vector (formed by all the current damage quantities), thus being capable of more accurately confirming the position and the damage degree of the damaged cable.

Description

technical field [0001] The invention identifies damaged cables in cable systems (referring to all cables) of cable structures (especially large cable structures, such as large cable-stayed bridges and suspension bridges) based on cable force monitoring, and belongs to the field of engineering structure health monitoring. Background technique [0002] The cable system is usually a key component of the cable structure, and its failure often leads to the failure of the entire structure. Based on the structural health monitoring technology to identify the Damaged cords are a method with great potential. At present, the structural health monitoring technology mainly monitors the cable force, and identifies the damaged cable and its damage degree according to the change of the cable force. However, as far as a single cable is concerned, the change of its cable force has a clear and monotonous relationship with its health status (damage degree), but when the cable is a cable struc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01M13/00G01L5/04
Inventor 韩玉林申文求
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap