Rapid Bridge Deck Condition Assessment Using Three-Dimensional Visualization of Impact Echo Data

Basing on the coupled vibration theory, dynamic behavior of steel bridge deck thin surfacing under rand moving vehicles is studied. A three-dimensional coupled model is carried out for the steel bridges deck thin surfacing and vehicle. A method based on modal superposition and state space technique is developed to solve dynamic response generated by vehicle-surfacing interaction. The dynamic responses of an actual steel bridge deck thin surfacing are studied. The results show that adding epoxy asphalt as a sub coat can improve interface adhesion strength, which would be designed as the interface layer of steel deck thin surfacing.

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Applicability and Limitations of Impact Echo in Bridge Deck Condition Monitoring

10.4133/1.2923671 ◽

2006 ◽

Author(s):

Parisa Shokouhi ◽

Nenad Gucunski ◽

Ali Maher

Keyword(s):

Condition Monitoring ◽

Bridge Deck ◽

Impact Echo

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Application of Impact-Echo Method to 3D SIBIE Procedure for Damage Detection in Concrete

Applied Sciences ◽

10.3390/app10082729 ◽

2020 ◽

Vol 10 (8) ◽

pp. 2729

Author(s):

Katsufumi Hashimoto ◽

Tomoki Shiotani ◽

Masayasu Ohtsu

Keyword(s):

Elastic Wave ◽

Three Dimensional ◽

Laser Doppler Vibrometer ◽

Concrete Specimen ◽

Resonant Frequencies ◽

Impact Echo ◽

Propagation Behavior ◽

Reinforced Concrete Slabs ◽

Reflection Intensity

In this study, to visualize damage and defects, such as cracks and voids in concrete, the SIBIE (stack imaging of spectral amplitudes based on impact echo) procedure is applied and numerically improved to construct a three-dimensional (3D) model of elastic wave propagation behavior. A unit of arrayed accelerometers is installed to detect multi-channel signal waveforms in the frequency domain. The resonant frequencies due to reflections at each node in 3D lattice nodes are computed by using the distances from elastic wave input to multiple output locations. The amplitudes corresponding to the resonant frequencies in the spectrum are summed up as the reflection intensity of elastic wave at each node. The reflection intensity distribution is visualized finally in the targeted area three-dimensionally. Case studies are carried out on the proposal of the improved 3D-SIBIE procedure, applied to a concrete specimen with simulated-damage as well as in-situ highway RC (Reinforced Concrete) slabs in service. As for the signal detection, a non-contact elastic wave detecting system using a laser doppler vibrometer is also introduced to consider and validate the promising remote sensing and inspection technique for damage evaluation in concrete with the 3D SIBIE procedure.

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Bridge deck condition assessment by using GPR: a review

MATEC Web of Conferences ◽

10.1051/matecconf/201819100004 ◽

2018 ◽

Vol 191 ◽

pp. 00004 ◽

Cited By ~ 1

Author(s):

Tahar Bachiri ◽

Abdellatif Khamlichi ◽

Mohammed Bezzazi

Keyword(s):

Ground Penetrating Radar ◽

Bridge Deck ◽

Condition Assessment ◽

Concrete Degradation ◽

Ground Penetrating ◽

Vital Structure ◽

Huge Progress

Bridge deck deterioration includes delamination, corrosion of rebars, vertical cracking and concrete degradation. Ground Penetrating Radar based inspection technique was used for mapping bridge deck in order to monitor the health of this vital structure. Beginning from the 1970‘s, research has focused on identification of bridge deck deterioration which causes severe deficiencies by reducing seriously strength. The main purpose of this work was to review the literature existing in the field of bridge deck diagnosis by means of Ground Penetrating Radar. This enabled to survey detailed evolution of this technique, to understand the effects of key intervening parameters and to determine the kind of material disorders that this device could be used for. Bridge deck condition assessment can then be performed more successfully, based on the huge progress experienced by this particular method of inspection.

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