Static and Fatigue Test on Real Steel Bridge Components Deteriorated by Corrosion

Macho, Martin; Ryjáček, Pavel; Matos, José C.

doi:10.1007/s13296-018-0099-6

Cited by 11 publications

(9 citation statements)

References 20 publications

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“…The influence of fatigue and corrosion on the behaviour of riveted connections has been the subject of much experimental and numerical research. [4][5][6] Laboratory tests 7 show that corrosion has a negative impact on the fatigue behaviour of steel riveted connections. As a result of the corrosion process, the surface of steel members becomes rough and the stress distribution changes.…”

Section: Combination Of Fatigue and Corrosion Damagementioning

confidence: 99%

“…For this reason, based on previous research, 7 the aim of the present paper is to develop a methodology that takes into account both fatigue and corrosion. The methodology will be usable for the fatigue assessment of existing steel riveted bridge structures affected by corrosion.…”

Section: Combination Of Fatigue and Corrosion Damagementioning

confidence: 99%

“…The result of this method is the stress spectrum, obtained in the place where the strain gauge was located on the structure. 7 are integrated into the model. The model provides the calculation relationships considering the change in detail category due to corrosion loss.…”

Section: Stress Spectrum Calculationmentioning

confidence: 99%

“…The relationship for the reduction of detail category was taken from the results of laboratory tests focusing on the fatigue behaviour of corroded elements. 7…”

Section: Calculation Of Fatigue Damagementioning

confidence: 99%

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Fatigue Life Analysis of Steel Riveted Rail Bridges Affected by Corrosion

Macho

Ryjáček

Matos

2019

Structural Engineering International

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Decades-old steel bridges have to endure an unfavourable environment that causes the ageing and deterioration of material properties. Moreover, railway bridges in particular are exposed to a large number of stress ranges that may lead to fatigue damage. The combination of both phenomena has a significant impact on the condition of bridges and their remaining service life. In such cases, appropriate maintenance or even removal of the deteriorated structure is necessary; however, a lack of funds often makes this difficult. The subject of this paper is the development of methodology for the assessment of remaining service life of existing steel bridges considering the fatigue and corrosion effects. Using MATLAB ® software, a program for the prediction of the remaining fatigue life has been developed. The results of earlier experiments and numerical simulations were integrated into this tool. Various scenarios regarding the future maintenance of bridges were included in the program, thus making it possible to calculate the remaining service life of bridges, including corresponding costs. The second half of the paper presents a case study demonstrating the application of the methodology and the calculation program.

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Section: Combination Of Fatigue and Corrosion Damagementioning

confidence: 99%

Section: Combination Of Fatigue and Corrosion Damagementioning

confidence: 99%

Section: Stress Spectrum Calculationmentioning

confidence: 99%

“…The relationship for the reduction of detail category was taken from the results of laboratory tests focusing on the fatigue behaviour of corroded elements. 7…”

Section: Calculation Of Fatigue Damagementioning

confidence: 99%

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Fatigue Life Analysis of Steel Riveted Rail Bridges Affected by Corrosion

Macho

Ryjáček

Matos

2019

Structural Engineering International

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“…19,20 It is no exaggeration to say that the formation of concrete cracks caused by the corrosion of steel bars affects the service performance of concrete buildings to a great extent. 19,21,22 The later maintenance and repair of concrete buildings are very important to extend their service time role. 23,24 Therefore, it is urgent to realize the dangers and early warning signs of concrete buildings and to apply intelligent maintenance in advance to avoid human casualties and the collapse of concrete buildings.…”

Section: Introductionmentioning

confidence: 99%

Analysis of steel corrosion‐induced surface damage evolution of magnesium oxychloride cement concrete through gray‐level co‐occurrence matrices

Wang

Huang

et al. 2020

Structural Concrete

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In order to get the characteristics of crack formation on a concrete surface, a coupled method of industrial cameras and gray-level co-occurrence matrices (GLCM) is used to analyze the formation of magnesium oxychloride cement concrete surface cracks. This method requires fewer samples than the previous edge detection method, typing analysis, and artificial neural network method and can provide more damage parameter information without being limited to the geometric information of local features. According to the GLCM analysis of the surface crack formation of concrete under the effect of a rust expansion force, it is concluded that the larger the concrete protective layer, the longer the energization time required. When the concrete surface crack reaches 0.2 mm, the test pieces with protective layers of 14, 24, 34, and 44 mm need to be energized for 270, 465, 673, and 792 hr, respectively. With the increase of cracks on the concrete surface, the contrast keeps increasing, while the correlation, energy, and homogeneity gradually decrease. In color heat maps, the number of matrix peaks gradually increases with the formation of cracks, and the bandwidth of the horizontal projection of matrix peaks gradually decreases, and there is a tendency to extend along the main diagonal of the matrix. The selection of the size of the region of interest region will have a certain impact on the size of the four eigenvalues in GLCM, but it will not change its development law.

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