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Mean-Squared Response Sensitivity Method for Bridge Damage Detection

An, Ning / Ma, Rui / Dong, Peng

A new sensitivity approach for detecting bridge deterioration using the mean-squared response is proposed, in which the dynamic responses of the bridge are estimated using a vehicle-bridge dynamic interaction model. The sensitivity of the mean-squared response to bridge damage is investigated and matrices are generated by defining the stiffness variation of the bridge element as an index of damage factor. The mean-squared response sensitivity method detects local bridge damage with significantly fewer iteration times, and the identification accuracy is proportional to the number of measuring points. The mean-squared response sensitivity approach may correctly identify bridge local damage, including single-element and two-element damage.

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Mean-Squared Response Sensitivity Method for Bridge Damage Detection

An, Ning / Ma, Rui / Dong, Peng

A new sensitivity approach for detecting bridge deterioration using the mean-squared response is proposed, in which the dynamic responses of the bridge are estimated using a vehicle-bridge dynamic interaction model. The sensitivity of the mean-squared response to bridge damage is investigated and matrices are generated by defining the stiffness variation of the bridge element as an index of damage factor. The mean-squared response sensitivity method detects local bridge damage with significantly fewer iteration times, and the identification accuracy is proportional to the number of measuring points. The mean-squared response sensitivity approach may correctly identify bridge local damage, including single-element and two-element damage.

Mean-Squared Response Sensitivity Method for Bridge Damage Detection

An, Ning / Ma, Rui / Dong, Peng

A new sensitivity approach for detecting bridge deterioration using the mean-squared response is proposed, in which the dynamic responses of the bridge are estimated using a vehicle-bridge dynamic interaction model. The sensitivity of the mean-squared response to bridge damage is investigated and matrices are generated by defining the stiffness variation of the bridge element as an index of damage factor. The mean-squared response sensitivity method detects local bridge damage with significantly fewer iteration times, and the identification accuracy is proportional to the number of measuring points. The mean-squared response sensitivity approach may correctly identify bridge local damage, including single-element and two-element damage.

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Title:

Mean-Squared Response Sensitivity Method for Bridge Damage Detection

Additional title:

Lecture Notes in Civil Engineering

Contributors:

Li, Dayong (editor) / Zhang, Yu (editor) / An, Ning (author) / Ma, Rui (author) / Dong, Peng (author)

Published in:

Advances in Frontier Research on Engineering Structures II ; Chapter: 26 ; 317-323

Lecture Notes in Civil Engineering ; 535

Publication date:

2024-12-10

Size:

7 pages

ISBN:

978-981-97-6238-5 , 978-981-97-6237-8

ISSN:

2366-2565 , 2366-2557

DOI:

https://doi.org/10.1007/978-981-97-6238-5_26

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Damage detection , Vehicle-bridge system , Mean-squared response , Sensitivity method Engineering , Building Construction and Design , Mechanical Engineering

Licence:

http://creativecommons.org/licenses/by/4.0/

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