Damaged cable and support translation progressive identification method on basis of angle monitoring during temperature variation

A progressive identification and angle monitoring technology, used in measuring devices, testing of machine/structural components, instruments, etc.

Inactive Publication Date: 2012-10-03
SOUTHEAST UNIV
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In addition to being affected by the health state of the cable system and the translational displacement of the support, the monitored quantity will also be affected by the temperature change of the cable structure (which often occurs). Under the condition that the temperature of the cable structure changes, if the monitored quantity can It is of great value to the safety of the cable structure to realize the identification of the translational displacement of the support cable and the support with health problems. At present, there is no public and effective health monitoring system and method to solve this problem.

Method used

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  • Damaged cable and support translation progressive identification method on basis of angle monitoring during temperature variation
  • Damaged cable and support translation progressive identification method on basis of angle monitoring during temperature variation
  • Damaged cable and support translation progressive identification method on basis of angle monitoring during temperature variation

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Embodiment Construction

[0125] When the temperature changes, the method discloses a system and method capable of reasonably and effectively monitoring and identifying the health status of each evaluated object in the cable structure for the identification of the translational displacement of the damaged cable and the support of the cable structure. The following description of embodiments of the method is merely exemplary in nature and is in no way intended to limit the application or uses of the method.

[0126] The method uses an algorithm that is used to identify damaged cables and support translational displacements. During specific implementation, the following steps are one of various steps that may be taken.

[0127] Step 1: Set the sum of the number of supporting cables of the cable structure and the number of translational displacement components of the support of the cable structure to be N. For the convenience of description, this method collectively refers to the evaluated supporting cab...

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Abstract

The invention relates to a damaged cable and support translation progressive identification method on the basis of the angle monitoring during temperature variation. According to the damaged cable and support translation progressive identification method, on the basis of the angle monitoring, the translation displacement of a support, the temperatures of cable structures, the environment temperature and the damage degrees of damaged cables are monitored to determine whether a mechanical calculation reference model of the cable structures needs to be updated so as to obtain a novel mechanical calculation reference model of the cable structures, in which the translation displacement of the support, the damage degrees of the damaged cables and the temperatures of the cable structures are counted; and on the basis of the new model, according to approximate linear relations between a current value vector of a monitored quantity and a current initial value vector of the monitored quantity, a value unit change matrix of the unit damage monitored quantity and a current nominal damage vector to be obtained, when the temperature is changed, the damaged cables and the translation displacement of the support can be accurately identified.

Description

technical field [0001] Cable-stayed bridges, suspension bridges, truss structures and other structures have one thing in common, that is, they have many parts that bear tensile loads, such as cable-stayed cables, main cables, slings, tie rods, etc. , cables, or rods that only bear tensile loads are supporting components. For convenience, this method expresses this type of structure as a "cable structure". As the ambient temperature changes, the temperature of the cable structure will also change. When the temperature of the cable structure changes, this method is based on angle monitoring to identify the supporting system of the cable structure (referring to all load-bearing cables and all supporting For the rods under tensile load, for the sake of convenience, this patent refers to all supporting components of this type of structure as "cable system", but in fact, the cable system not only refers to the supporting cables, but also includes rods that only bear tensile loads ,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00G01B21/02
Inventor 韩玉林万江韩佳邑
Owner SOUTHEAST UNIV
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