@misc{LiZhangShietal., author = {Li, Zheng and Zhang, Qiulei and Shi, Fei and Wang, Jian and Pasternak, Hartmut}, title = {Geometric Properties of Steel Components with Stability and Fatigue Risks Using 3D-Laser-Scanning}, series = {Buildings}, volume = {14}, journal = {Buildings}, number = {1}, issn = {2075-5309}, doi = {10.3390/buildings14010168}, abstract = {Nowadays, 3D laser scanning technology is extensively employed in laboratory investigations of steel structural components, providing accurate geometric dimensions to reduce uncertainties caused by indeterminate geometry in experimental results. It is often used in conjunction with the Finite Element (FE) Method and analytical solutions, which are more accurate deterministic operators in the research on steel structures. However, establishing a common methodological framework for transferring or mapping 3D-scanned information into finite element models for complex steel structures with stability and fatigue risks remains an ongoing task. In light of this, this study has developed a 3D scanning platform capable of obtaining accurate geometric dimensions for various types of steel components. Different coordinate systems and point cloud mapping algorithms have been established for different types of components to construct actual finite element models with initial imperfections. The feasibility of the self-developed 3D scanning platform and finite element modelling has been validated through three experimental cases: weld details, steel girders, and cylindrical shells. The research findings demonstrate that the captured point cloud can be automatically processed and corrected using the developed algorithm. The scanned data can then be input into the numerical model using various mapping algorithms tailored to the specific geometric properties of the specimens. The differences between the experimental test results and the simulated results obtained from the 3D-scanned finite element models remain within a small range. The self-developed 3D scanning platform and finite element modelling technique effectively capture the actual dimensions of different steel components, enabling the prediction of their stability and fatigue risks through numerical simulations.}, language = {en} } @misc{WangLiEuler, author = {Wang, Jian and Li, Zheng and Euler, Mathias}, title = {Shear force resistance of plate girders with trapezoidally corrugated webs and reinforced web openings}, series = {Nordic Steel Construction Conference 2024, The 15th Nordic Steel Construction Conference, June 26-28, 2024, Lule{\aa}, Sweden}, journal = {Nordic Steel Construction Conference 2024, The 15th Nordic Steel Construction Conference, June 26-28, 2024, Lule{\aa}, Sweden}, doi = {10.5281/zenodo.12209595}, pages = {10}, abstract = {Corrugated web beams are an alternative to steel girders with flat webs. They consist of a welded Isection with a thin-walled trapezoidally corrugated web and flanges made of wide flat steel. In comparison with hot-rolled or welded I-beams with flat webs, corrugated web beams offer significant material savings and are produced fully automated. Assuming the same load-bearing capacity, corrugated web beams are lighter than those with a flat web, since the corrugated web beams can often be loaded up to their plastic resistance without reinforcement of the web. Research on the loadbearing behaviour of corrugated web beams without web openings is well-established. However, the resistance of corrugated web beams with reinforced web openings, which are necessary for installations in buildings, has not been well investigated experimentally yet. This paper examines the shear force resistance of trapezoidally corrugated web beams with reinforced square web openings. Two beam-like specimens with the same geometry but differently reinforced web openings were tested. The experimental results are compared with a Finite Element Analysis using Abaqus® and with an analytical model that allows a simplified calculation. The comparison identifies how the wall thickness of the web opening reinforcement affects the shear force resistance of perforated corrugated web beams.}, language = {en} } @misc{WangEuler, author = {Wang, Jian and Euler, Mathias}, title = {Trapezstegtr{\"a}ger mit versteiften quadratischen Steg{\"o}ffnungen}, series = {24. DASt-Forschungskolloquium, 5. und 6. M{\"a}rz 2024}, journal = {24. DASt-Forschungskolloquium, 5. und 6. M{\"a}rz 2024}, address = {D{\"u}sseldorf}, pages = {102 -- 106}, abstract = {Im Rahmen des Beitrags wird das Tragverhalten von Trapezstegtr{\"a}gern mit quadra tischen {\"O}ffnungen und {\"O}ffnungskr{\"a}nzen (umlaufende Versteifung) als Verst{\"a}r kungsmaßnahme untersucht. Die Ergebnisse aus zwei Traglastversuchen und einer umfangreichen numerischen Parameterstudie (FE-Berechnungen) zum Tragverhal ten von Trapezstegtr{\"a}gern mit versteiften quadratischen Steg{\"o}ffnungen werden vor gestellt. In der Parameterstudie werden die Einfl{\"u}sse der Kranzdicke und der geo metrischen Imperfektionen auf die Querkrafttragf{\"a}higkeit der Trapezstegtr{\"a}ger un tersucht. Schlussendlich wird ein praxisnaher Bemessungsvorschlag zur Ermittlung der Querkrafttragf{\"a}higkeit von Trapezstegtr{\"a}gern mit versteiften Steg{\"o}ffnungen vor gestellt.}, language = {de} }