Check patentability & draft patents in minutes with Patsnap Eureka AI!

Cable structure cable force measurement method and system based on flexibility identification

A measurement method and cable structure technology, which are used in the testing of machine/structural components, tension measurement, measurement devices, etc., can solve problems such as poor identification accuracy, and achieve the effects of high accuracy, wide applicability, and simple relationship.

Active Publication Date: 2017-02-08
SOUTHEAST UNIV
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the impact of boundary conditions and bending stiffness is significant in the vibration test of the short cable force, resulting in poor recognition accuracy based on the frequency method

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
  • Cable structure cable force measurement method and system based on flexibility identification
  • Cable structure cable force measurement method and system based on flexibility identification
  • Cable structure cable force measurement method and system based on flexibility identification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The technical solution of the present invention will be described in detail below by taking a short cable as an example.

[0047] The selected sling material is glass fiber, the length is 6m, the diameter is 0.0413m, and the modulus of elasticity of the sling is 5.152×10 4 MPa, material density is 2039kg / m 3 .

[0048] 1. Cable force and stiffness linear fitting and physical stiffness identification in the tension stage

[0049] In the bridge completion stage, tension jacks are used to tension the cable force T of the sling to 40KN, 80KN, and 120KN in sequence, and a health monitoring system is quickly deployed for testing and compliance identification. Proceed as follows:

[0050] Step 1: Quickly install and monitor. Such as figure 1 and image 3 As shown, the acceleration health monitoring system 3 is installed at the nodes 1 to 5 of the sling 2 of the bridge structure 1;

[0051] Step 2: Shock vibration test. Use the hammer 4 to hammer the node 1, and use the...

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 present invention discloses a cable structure cable force measurement method and system based on flexibility identification. The measurement method comprises: firstly, obtaining the time interval signals of the impact force acted on the cable structure and the accelerated speed signals under the action of the impact force; secondly, identifying the flexibility matrix of the cable structure through the obtained impact force time interval signals and the accelerated speed signals; and finally, obtaining the total rigidity through inversion of the flexibility after the flexibility of the cable structure is identified, and employing the corresponding relation between the cable force and the total rigidity to obtain the final cable force. The cable structure cable force measurement method and system based on the flexibility identification employs the linear relation between the cable force and the rigidity of the cable structure to perform cable force and the physics rigidity identification so as to provide a monitoring method with stable reliability degree for the cable force test of a short cable.

Description

technical field [0001] The invention relates to the technical field of structural health monitoring, in particular to a method and system for monitoring cable force of a cable structure. Background technique [0002] As the key load-bearing components in arch bridges, cable-stayed bridges and suspension bridges, cables play a very important role in the safety of bridge structures. The magnitude of the cable force directly affects the stress and deformation state of the bridge superstructure. After the bridge is in operation, due to environmental conditions and traffic loads, the bridge cables will be damaged, resulting in changes in the cable force. Therefore, it is a key issue to regularly test the cable force of bridge cables. [0003] At present, the main cable force test methods include pressure sensor method, pressure gauge reading method, tension jack measurement method, magnetic flux method and vibration frequency method. The pressure sensor method and the pressure ...

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): G01L5/04G01M5/00
CPCG01L5/04G01M5/0058
Inventor 张建李攀杰
Owner SOUTHEAST UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com