Signal processing based damage detection of concrete bridge piers subjected to consequent excitations

Naderpour, Hosein; Ezzodin, Amir; Kheyroddin, Ali; Amiri, Gholamreza Ghodrati

doi:10.21595/jve.2015.16474

Cited by 10 publications

(3 citation statements)

References 15 publications

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“…Aguirre et al explored the practicality of employing output-only model-free wavelet-based techniques to identify damages in reinforced concrete structures under seismic loads [11]. To obtain the perturbation regarding the precise performance of the acceleration response in the bridge piers, a model-free output-only wavelet-based damage detection methodology was proposed by Naderpour et al [12]. Employing a simplifed numerical model and in situ vibration measurement enables some degrees of freedom.…”

Section: Introductionmentioning

confidence: 99%

A Novel Damage Detection Method of Reinforced Concrete Frames Using Signal Processing and Extracted Near-Fault Fling-Step Pulses

Ezzodin

Amiri

Naderpour

et al. 2022

Shock and Vibration

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A new model-free output-only signal processing-based damage detection procedure was carried out in this paper. First of all, a finite element model as the representative of reinforced concrete (RC) frames was constructed and subjected to a specific loading protocol in OpenSees. The protocol consisted of 9 consequent different near-fault fling-step pulse-type earthquake records with low-amplitude white noises among them to simulate the collapse procedure. The analysis process was complemented in three levels: (a) the Fourier transform was utilized to extract the vibration frequency, (b) the time instants of damage occurrence were detected by using the discrete wavelet transform, and (c) accurate damage detection was made by using the extracted pulse components of the records as loading protocol for earthquake simulation and the discrete wavelet transform. The results revealed that the proposed combinatorial method could efficiently diagnose the damage in the RC frames. Also, applying a pulse component instead of an original record increases the accuracy of damage detection by 70%.

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Section: Introductionmentioning

confidence: 99%

A Novel Damage Detection Method of Reinforced Concrete Frames Using Signal Processing and Extracted Near-Fault Fling-Step Pulses

Ezzodin

Amiri

Naderpour

et al. 2022

Shock and Vibration

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“…In 2016, Damage identification based on Peak Picking Method and Wavelet Packet Transform for structural equation has been used by Naderpour and Fakharian [22]. In 2017, a model-free output-only wavelet-based damage detection analysis was performed in order to achieve perturbation of detailed function of acceleration response in bridge piers [23]. It is worth to be noted that the safety measures of buildings in terms of structural reliability and probabilistic point of view were studied in different researches.…”

Section: Introductionmentioning

confidence: 99%

Structural damage detection of reinforced concrete shear walls subject to consequent earthquakes

2019

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Structural health monitoring is a procedure to provide accurate and immediate information on the condition and efficiency of structures. There is a variety of damage factors and the unpredictability of future damage, is essential for the application of structural health monitoring. Structural health monitoring and damage detection in early stages is one of the most fascinating topics that had been paid attention because the majority of damages can be repaired and reformed by initial evaluation, consequently the spread of damage to the structures, building collapse and rising of costs can be prevented. Detection of concrete shear wall damages are designed to withstand the lateral load on the structure is critical. Since failures and malfunctions of shear walls can lead to serious damage or even progressive dilapidation of concrete structures, any change in stiffness and frequency can clearly demonstrate the occurrence of the damage. In this article, with non-linear time history analysis, the finite element model of structures with concrete shear walls subject to four earthquakes have been extracted and applying Fourier and wavelet transform, the damage of shear walls is detected. The results of displacement, base shear and hysteresis curves for experimental and numerical programs indicate a good agreement which guarantee the precision of the damage detection procedure.

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“…Bridges are the essential and strategic elements in structural engineering that undergo vibrations under operational conditions like the effects of traffic, wind and other low vibrations called ambient vibrations. It has been estimated that about 2.5 million bridges are operated by global transportation network all over the world [1]. Therefore, the required maintenance shall be applied during the life time of the bridges (Fig.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on damage detection of RC bridge piers under ambient vibration

Safakhah¹,

Kheyroddin²,

Zahrai³

2018

J. vibroeng.

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This paper presents an experimental method for damage detection of bridge piers as the basic and strategic elements in such engineering structures. Definition of percentage and location of damage are considered as initial data to solve damage detection problems. Nowadays, regarding the development of inverse methods for damage detection such as definition of objective functions and optimization approaches, the present experimental study can be utilized as initial stage of such methods. In this study, three 1/3 scaled test specimens of RC bridge piers are casted. Spacing of transverse reinforcements is considered as the main variable parameter for test specimens. The constant vertical loads and low vibrations as cyclic loads are applied to the specimens and the results including the hysteresis behavior of specimens and the backbone curves are investigated. The damage percentage per first four steps is also extracted to utilize the results using Banon-Veneziano method. Also increase in lateral displacement during first steps initiated micro cracks propagated along nearly one tenth of the piers length (0.1L) above the foundation. The cracks were propagated after an increase in displacement from fourth step and were separately observed. Finally, the ultimate failures were observed along nearly one fifth of the piers length (0.2L). Finally, the results revealed that the proposed method is an appropriate method to determine the severity of damage and its location as the primary information in reverse-optimization methods.

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Signal processing based damage detection of concrete bridge piers subjected to consequent excitations

Cited by 10 publications

References 15 publications

A Novel Damage Detection Method of Reinforced Concrete Frames Using Signal Processing and Extracted Near-Fault Fling-Step Pulses

A Novel Damage Detection Method of Reinforced Concrete Frames Using Signal Processing and Extracted Near-Fault Fling-Step Pulses

Structural damage detection of reinforced concrete shear walls subject to consequent earthquakes

Experimental study on damage detection of RC bridge piers under ambient vibration

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