Aspects of structural degradation in steels of old bridges by means of fatigue crack propagation

Lesiuk, Grzegorz; Szata, M.

doi:10.1007/s11003-011-9371-z

Cited by 25 publications

(13 citation statements)

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“…Construction materials commonly used at the turn of 19th century were two types of steel -puddled and mild one. Technical infrastructures such as bridges made of those steel types and subjected to long operation periods show inclination towards degradation processes of their mechanical properties and chemical composition, which is well documented in previous authors' investigations [4][5][6][7]. The chemical composition and basic mechanical properties for puddle (called puddle iron) and mild steels are shown in Tables 1 and 2, respectively.…”

Section: Introductionsupporting

confidence: 65%

Fatigue resistance curves for single and double shear riveted joints from old portuguese metallic bridges

Pedrosa

Correia

Rebelo

et al. 2019

Engineering Failure Analysis

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The maintenance and safety of ancient bridges is a major concern of governmental authorities. In particular, the safety of old riveted bridges fabricated and placed into service at the end of the 19th century deserves particular attention. These structures are susceptible to exhibit high fatigue damage levels due to their long operational period with increasing traffic intensity associated to an original design not covering the fatigue phenomenon. This paper reviews recent fatigue behaviour investigations on single and double shear riveted joints performed by Universities of Porto (Portugal), Trás-os-Montes e Alto Douro (Portugal), and Wrocław (Poland), in particular concerning the fatigue characterization of riveted joints extracted from representative Portuguese riveted bridges, namely the Eiffel, Luiz I, Fão, Pinhão and Trezói bridges. In order to overcome the influence of scatter and establish a reliable assessment for the obtained experimental data, two statistical approaches were used: implement linearized boundaries following the recommendation in ASTM E739 standard and defining probabilistic SeN fields using the Castillo & Fernández-Canteli model. This statistical analysis allows to propose design SeN curves for single and double riveted joints and evaluate the applicability (safety) of using the design curves suggested in Eurocode 3 as well as design curves proposed by Taras and Greiner.

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Section: Introductionsupporting

confidence: 65%

Fatigue resistance curves for single and double shear riveted joints from old portuguese metallic bridges

Pedrosa

Correia

Rebelo

et al. 2019

Engineering Failure Analysis

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“…A similar effect was observed in 19th puddled steel from old bridge (1861) [15]. Threshold values of stress intensity coefficients for the steels ''RS'' and ''B'' were determined.…”

Section: Strength Examinationsupporting

confidence: 59%

The mechanical properties and the microstructural degradation effect in an old low carbon steels after 100-years operating time

Lesiuk¹,

Szata²,

Bocian³

2015

Archives of Civil and Mechanical Engineering

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“…These are an important challenge in buildings which have been in use for long periods. For this reason, there is great interest in the literature when it comes to the material testing of structures made from old low-carbon steel [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Studies have indicated that the degradation of microstructure due to corrosion processes leads to a decrease in steel ductility, as well as to changes in the character and rate at which fatigue cracking develops [ 1 , 2 ].…”

Section: Introductionmentioning

confidence: 99%

Metallographic Testing of 19th Century Steel in an Operating Water Tower

2021

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The world’s first steel structures were built towards the end of the 19th century. Some of them are still in use today, whereas others are maintained as precious technical heritage. In both cases, there may be a need to assess their technical condition and carry out repairs and reinforcements, which requires an understanding of the properties of the steel used. The few studies that have been undertaken of such steel structures indicate that the properties depend on the history of use. This paper presents the results of metallographic tests of a steel tank in a water tower built in 1884 in Lower Silesia. The chemical composition was consistent with that of the puddled steel used in the 19th century. The carbon content showed significant segregation and ranged from 0.011% to 0.072% mass. As a consequence, a typical microstructure for low-carbon steels (ferritic) was observed, changing locally to ferritic-pearlitic. The tested steel contained a very high content of phosphorus and silicon. The microstructure with numerous slags favoured the formation of surface delamination caused by the corrosion processes. The degree of corrosion of the steel of the tank was also assessed, as well as the type of corrosion inside the tank. Corrosion was favoured by the oxygen concentration cell. The results of the research will be used to assess the potential for continuing tank use and the reinforcements that have been planned. The results presented will add to the somewhat limited research results available for steel dating back to the 19th century, which is still present in many building structures. Such a database is especially needed by those designing technical measures aimed at maintaining these historical structures in good technical condition.

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Aspects of structural degradation in steels of old bridges by means of fatigue crack propagation

Cited by 25 publications

References 1 publication

Fatigue resistance curves for single and double shear riveted joints from old portuguese metallic bridges

Fatigue resistance curves for single and double shear riveted joints from old portuguese metallic bridges

The mechanical properties and the microstructural degradation effect in an old low carbon steels after 100-years operating time

Metallographic Testing of 19th Century Steel in an Operating Water Tower

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