Structural Integrity - Historical Context

doi:10.17559/tv-20220321074430

Cited by 3 publications

(5 citation statements)

References 8 publications

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“…Semi-arch shapes were varied, along with the changes in the cross-sections along the arch lengths. Adopted arches were slightly stronger than the ones shown in [1,6], with a parabolic arch. It was determined that the reaction forces in the semi-arches from the dome dead weight acting on the main support ring was 1050 kN, i.e.…”

Section: Numerical Simulations Of the Dome As A Wholementioning

confidence: 63%

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Structural integrity analysis of the pre-stressed concrete dome of the Belgrade fair hall 1

Jelić,

Sedmak,

Folić

et al. 2023

Frattura Ed Integrità Strutturale

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Belgrade fair hall 1 is well known for its dome, which is still the world largest self-supported construction made of pre-stressed concrete, with its diameter of 106 m. In this paper the Finite Element Method (FEM) was performed to analyze different loading and supporting conditions. At the same time, crack growth in a support column was simulated by the extended FEM (XFEM). Results of numerical calculations indicate ingenious design of such a complex structure which was based on “hand” calculation decades ago, without computers. In addition to classical engineering and more advanced numerical calculations, risk based analysis was performed taking into account artificially introduced crack and Failure Analysis Diagram, obtained using stress intensity factor and net stress, as well as fracture toughness and critical stress. This analysis, made for the first time for Belgrade fair hall 1, proved that its structural integrity is jeopardized only when a crack reaches half the thickness of a steel bar.

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Section: Numerical Simulations Of the Dome As A Wholementioning

confidence: 63%

“…hrough the history of a mankind, large structures were always a demonstration of power and human ingenuity to make them bigger and bigger, but also more reliable at the same time, [1]. Concrete was always a suitable material for large structures, due to its low price and satisfying mechanical properties, except for the tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Structural integrity analysis of the pre-stressed concrete dome of the Belgrade fair hall 1

Jelić,

Sedmak,

Folić

et al. 2023

Frattura Ed Integrità Strutturale

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“…Metal bridges were not known in ancient times. There are only indications that in ancient China and India, around the 1st century AD, iron chains were used for suspension bridges (Bender, 1872;Sedmak, Ković, & Kirin, 2022;).…”

Section: Results and Discussion What Materials Were Used At Different...mentioning

confidence: 99%

“…The first real metal bridge was built in the central industrial region of England, in the county of Shropshire across the river. River Severn (Sedmak, Ković, & Kirin, 2022). On one side of the river was the famous Coalbrookdale works of Abraham Darby II and Reynolds.…”

Section: Results and Discussion What Materials Were Used At Different...mentioning

confidence: 99%

On the history of the construction of metal bridges in the 20th century using welding technology

Strelko

2023

Hist. sci. technol.

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The history of bridge construction is an important part of historical knowledge. Developments in bridge construction technology reflect not only engineering advances, but also social, economic and cultural aspects of society. Engineers and scientists faced unique challenges when designing and building bridges depending on the technological level of the era, available materials and the needs of society. This process may reflect technological progress, changes in transportation needs, and cultural and social changes. The purpose of this article is to briefly review key moments and stages in the history of metal bridge construction using welding technology in the 20th century. The history of the development of the construction of metal bridges using welding goes back a little over 100 years. The short period from the construction of the first welded bridges to their first disasters led to the need to analyze the possible causes of these destructions. As the analysis performed showed, catastrophic destruction most often occurred under the influence of several factors, as well as a combination of external adverse influences and the internal “unpreparedness” of the structure for them. The above examples indicate that an irrational choice of steel could be both an independent cause causing brittle failure of structures, and an aggravating factor in the presence of structural violations, thermal stresses and welding defects. Over the years, bridge manufacturing technologies have been improved in different countries, and new steels and materials for their welding have been developed. Thanks to the use of carbon, low-alloy and alloy steel, designers abandoned the brutal “railroad-type” beam trusses and today metal bridges with graceful and beautiful silhouettes powerfully stride across the water surface, mountains and valleys. They became real attractions of megacities and country landscapes, and builders were able to successfully solve numerous technical and economic problems. An important contribution to the development of global bridge construction using welding technologies was made by the team of the Institute of Electric Welding of the Academy of Sciences of the Ukrainian SSR under the leadership of Academician Evgeny Oskarovych Paton. The team of the Institute of Electric Welding of the Academy of Sciences of the Ukrainian SSR, introducing welding into bridge construction, carefully checked the results and monitored the behavior of structures. A new grade of steel was created that was resistant to the formation of brittle and fatigue cracks, its welding technology was developed, a technology for installation welding of vertical sheets with forced formation of a seam was developed, and suitable welding materials were selected. At the time of construction in 1953, the Kyiv Evgeny Paton Bridge across the Dnipro River was the largest all-welded bridge in Europe, all seams of which, including assembly ones, were made for the first time using automatic and semi-automatic welding. In addition, the presence of large similar blocks in the design of the Evgeny Paton Bridge made it possible to mechanize assembly and welding operations and organize an in-line method for their production at the factory and installation, which improved the quality of welding work and reduced its labor intensity.

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“…Consequently, HSLA steel was used, SUMITEN 80P, with YS around 700 MPa, but only after extensive experimental research of the prototype, as shown in Figure 1, to prove its fitness-for-purpose, as described in [21,22]. Later on, this approach was named the structural integrity [25]. Although this issue was a topic of a number of papers decades ago, only recently some of the most intriguing results have been explained in detail by using the finite element method for precise analysis of the stress-strain state, both for the prototype [26][27][28] and for tensile panels with large and small cracks, as shown in [29,30] for the BM.…”

Section: Introductionmentioning

confidence: 99%

Crack Size and Undermatching Effects on Fracture Behavior of a Welded Joint

et al. 2023

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Crack size and undermatching effects on fracture behavior of undermatched welded joints are presented and analyzed. Experimental and numerical analysis of the fracture behavior of high-strength low-alloyed (HSLA) steel welded joints with so-called small and large crack in undermatched weld metal and the base metal was performed, as a part of more extensive research previously conducted. J integral was determined by direct measurement using special instrumentation including strain gauges and a CMOD measuring device. Numerical analysis was performed by 3D finite element method (FEM) with different tensile properties in BM and WM. Results of J-CMOD curves evaluation for SUMITEN SM 80P HSLA steel and its weld metal (WM) are presented and analyzed for small and large cracks in tensile panels. This paper is focused on some new numerical results and observations on crack tip fields and constraint effects of undermatching and crack size keeping in mind previously performed experiments on the full-scale prototype. In this way, a unique combined approach of experimental investigation on the full-scale proto-type and tensile panels, as well as numerical investigation on mismatching and crack size effects, is achieved.

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Structural Integrity - Historical Context

Cited by 3 publications

References 8 publications

Structural integrity analysis of the pre-stressed concrete dome of the Belgrade fair hall 1

Structural integrity analysis of the pre-stressed concrete dome of the Belgrade fair hall 1

On the history of the construction of metal bridges in the 20th century using welding technology

Crack Size and Undermatching Effects on Fracture Behavior of a Welded Joint

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