Damage Identification of the Arch Bridge Based on the Difference of Deflection with Moving Load

Zhan Zhao; Zhen Hua Nie; Hong Wei Ma

doi:10.4028/www.scientific.net/AMM.578-579.1096

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 578-579Damage Identification of the Arch Bridge Based on...

Damage Identification of the Arch Bridge Based on the Difference of Deflection with Moving Load

Abstract:

A new damage identification method for arch bridge structures under a moving load based on the difference of deflection is presented. The function of the deflection at the mid span of the arch with the changing positions of the moving load is derived using the Moore integral method. It can be concluded from the results that when the moving load is in the area without damage, this target indicates to be linear functions with the cosine of an angle (θ) between moving load and horizontal. Nevertheless, this target is multinomial with the change of cosθ in the damage area. In order to validate the proposed damage detection algorithm, a steel arch modal is simulated, which is proved to be practicable in projects. The results indicate that the location and degree of single damage can be identified accurately.

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Periodical:

Applied Mechanics and Materials (Volumes 578-579)

Pages:

1096-1100

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.578-579.1096

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Online since:

July 2014

Authors:

Zhan Zhao*, Zhen Hua Nie, Hong Wei Ma

Keywords:

Arch Bridge, Damage Identification, Health Monitoring, Moving Load

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* - Corresponding Author

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