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315 results on '"Kuhlmann, A"'

2. Ermüdungsfestigkeit von Betonfahrbahnplatten bei Verbundgroßbrücken.

Author

Stempniewski, Lena and Kuhlmann, Ulrike

Subjects
*FATIGUE limit, *SHEAR reinforcements, *CONCRETE fatigue, *BENDING moment, *CONCRETE slabs, *CONSTRUCTION slabs, *GIRDERS
Abstract

Fatigue strength of concrete decks for large composite bridges In the support area of large composite bridges, tensile stresses occur in the concrete deck slab due to the negative bending moment of the main girders, leading to cracks in the concrete deck. Transverse steel cantilever beams are arranged under the deck at the transverse frame spacing in order to support e. g. prefabricated concrete elements, so that the deck slab predominantly spans in the longitudinal direction. Cyclic transverse forces due to local wheel loads caused by high variable traffic loads must then be transferred to the cross girders via the cracked concrete slab, as a result of the tensile loading. Up to now, no tests have been carried out to determine the fatigue strength of the cracked concrete deck slab. Based on tests from the literature (whereby so far only well documented tests without longitudinal tensile loading have been available) and own experiments (with longitudinal tensile loading), a database has been developed which formed the basis for the derivation of S‐N‐lines and which allowed the evaluation of the influence of specific parameters on the fatigue strength. Since the fatigue strength of reinforced concrete elements without shear reinforcement is dependent on the static load‐bearing capacity, the influence of the scatter of the static shear capacity on the fatigue strength is discussed in particular. Based on the results and the current state of standardization, a design concept for the fatigue strength of the concrete deck slab is presented. [ABSTRACT FROM AUTHOR]

Published
2024
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8. HFH‐Nachbehandlung höchstfester Baustähle – Erweiterung der DASt‐Richtlinie 026 – Kerbfalleinstufung unter Berücksichtigung geometrischer Fertigungsimperfektionen

Author

Thomas Ummenhofer, Ulrike Kuhlmann, Knuth‐Michael Henkel, Wilko Flügge, Philipp Weidner, Katrin Armbruster, Lisa‐Marie Gölz, Andreas Gericke, and Benjamin Ripsch

Subjects
Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Building and Construction, Civil and Structural Engineering
Published
2022

9. Statische Tragfähigkeit von geschweißten, hochfesten Hohlprofilknoten – FOSTA Forschungsverbund HOCHFEST: Projekte 'Hochfeste Hohlprofilknoten'

Author

Thomas Ummenhofer, Ulrike Kuhlmann, Imke Engelhardt, Markus Feldmann, Richard Stroetmann, Jonas Hensel, Wigand Knecht, Adrian Münch, Philipp Weidner, Joscha Weinert, Valentin Larasser, Helen Bartsch, Thoralf Kästner, Brian Rust, Jan Schmidt, André Hälsig, Martin Neumann, and Simon Schaffrath

Subjects
Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Building and Construction, Civil and Structural Engineering
Published
2022

10. Ausführung und Fertigung von geschweißten, hochfesten Hohlprofilknoten

Author

Richard Stroetmann, Jonas Hensel, Ulrike Kuhlmann, Thomas Ummenhofer, Imke Engelhardt, Thoralf Kästner, Brian Rust, Martin Neumann, Wigand Knecht, Adrian Münch, Jan Schmidt, André Hälsig, Philipp Weidner, Joscha Weinert, and Valentin Larasser

Subjects
Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Building and Construction, Civil and Structural Engineering
Published
2022

11. Effiziente Nachweiskonzepte für geschweißte Mischverbindungen im Stahlbau

Author

Mareike von Arnim, Stefan Eichler, Oliver Brätz, Jörg Hildebrand, Andreas Gericke, Ulrike Kuhlmann, Jean Pierre Bergmann, and Wilko Flügge

Subjects
Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Building and Construction, Civil and Structural Engineering
Published
2022

13. Ermüdungsfestigkeit von Zugstäben mit Endgewinden

Author

Julian Unglaub, Hendrik Jahns, Georgios Skarmoutsos, Ulrike Kuhlmann, and Klaus Thiele

Subjects
Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Building and Construction, Civil and Structural Engineering
Published
2022

19. HFH‐Nachbehandlung höchstfester Baustähle – Erweiterung der DASt‐Richtlinie 026 – Kerbfalleinstufung unter Berücksichtigung geometrischer Fertigungsimperfektionen

Author

Ummenhofer, Thomas, primary, Kuhlmann, Ulrike, additional, Henkel, Knuth‐Michael, additional, Flügge, Wilko, additional, Weidner, Philipp, additional, Armbruster, Katrin, additional, Gölz, Lisa‐Marie, additional, Gericke, Andreas, additional, and Ripsch, Benjamin, additional

Published
2022
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20. Ausführung und Fertigung von geschweißten, hochfesten Hohlprofilknoten

Author

Stroetmann, Richard, primary, Hensel, Jonas, additional, Kuhlmann, Ulrike, additional, Ummenhofer, Thomas, additional, Engelhardt, Imke, additional, Kästner, Thoralf, additional, Rust, Brian, additional, Neumann, Martin, additional, Knecht, Wigand, additional, Münch, Adrian, additional, Schmidt, Jan, additional, Hälsig, André, additional, Weidner, Philipp, additional, Weinert, Joscha, additional, and Larasser, Valentin, additional

Published
2022
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21. Statische Tragfähigkeit von geschweißten, hochfesten Hohlprofilknoten – FOSTA Forschungsverbund HOCHFEST: Projekte „Hochfeste Hohlprofilknoten“

Author

Ummenhofer, Thomas, primary, Kuhlmann, Ulrike, additional, Engelhardt, Imke, additional, Feldmann, Markus, additional, Stroetmann, Richard, additional, Hensel, Jonas, additional, Knecht, Wigand, additional, Münch, Adrian, additional, Weidner, Philipp, additional, Weinert, Joscha, additional, Larasser, Valentin, additional, Bartsch, Helen, additional, Kästner, Thoralf, additional, Rust, Brian, additional, Schmidt, Jan, additional, Hälsig, André, additional, Neumann, Martin, additional, and Schaffrath, Simon, additional

Published
2022
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27. Ermüdungsfestigkeit von Gurtlamellenenden

Author

Ulrike Kuhlmann and Karl Drebenstedt

Subjects
Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Building and Construction, Civil and Structural Engineering
Published
2020

33. Verbundbrückenbau – neue Entwicklungen und Beispiele

Author

Ulrike Kuhlmann, Jochen Raichle, and Lena Stempniewski

Subjects
Engineering, Composite construction, Mechanics of Materials, business.industry, Mechanical Engineering, Metals and Alloys, Building and Construction, business, Humanities, Civil and Structural Engineering
Published
2019

34. Experimentelle Untersuchungen an Slim‐Floor‐Trägern

Author

Therese Sheehan, Nadia Baldassino, Ulrike Kuhlmann, Johannes Schorr, Riccardo Zandonini, and Dennis Lam

Subjects
Composite construction, Materials science, Creep, Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Building and Construction, Composite material, Civil and Structural Engineering, Shrinkage
Published
2019

35. Tragverhalten von CoSFB‐Dübeln

Author

Markus Schäfer, Matthias Braun, Ulrike Kuhlmann, Ferdinand Reif, Renata Obiala, and Christoph Odenbreit

Subjects
Composite construction, Materials science, Mechanics of Materials, business.industry, Mechanical Engineering, Metals and Alloys, Building and Construction, Structural engineering, business, Civil and Structural Engineering
Published
2019

36. Anwendungsregeln für Slim‐Floor‐Träger unter Berücksichtigung von Sicherheit, Funktionalität und Nachhaltigkeit

Author

Eleftherios Aggeloupolos, Therese Sheehan, Ulrike Kuhlmann, Johannes Schorr, Dennis Lam, Françoise Labory, Mike Tibolt, Riccardo Zandonini, and Nadia Baldassino

Subjects
Mechanics of Materials, Mechanical Engineering, media_common.quotation_subject, Metals and Alloys, Building and Construction, Art, Humanities, Civil and Structural Engineering, media_common
Published
2019

39. Tragfähigkeit von Kehlnahtverbindungen normal- und höherfester Stähle

Author

Ulrike Kuhlmann and Jennifer Spiegler

Subjects
Materials science, Mechanical Engineering, Metallurgy, Fillet weld, Metals and Alloys, High strength steel, 020101 civil engineering, 02 engineering and technology, Building and Construction, 0201 civil engineering, 020303 mechanical engineering & transports, 0203 mechanical engineering, Mechanics of Materials, Civil and Structural Engineering
Published
2018

40. Aufgeschweißte Flach- und Vierkantschienen von Kranbahnträgern

Author

Mathias Euler and Ulrike Kuhlmann

Subjects
020303 mechanical engineering & transports, Materials science, 0203 mechanical engineering, Mechanics of Materials, Mechanical Engineering, Metals and Alloys, 020101 civil engineering, 02 engineering and technology, Building and Construction, 0201 civil engineering, Civil and Structural Engineering
Published
2018

41. Entwicklung einer DASt-Richtlinie für höherfrequente Hämmerverfahren

Author

Philipp Weidner, Thomas Ummenhofer, Stephanie Breunig, and Ulrike Kuhlmann

Subjects
0209 industrial biotechnology, 020901 industrial engineering & automation, Materials science, Mechanics of Materials, Mechanical Engineering, Metals and Alloys, 020101 civil engineering, 02 engineering and technology, Building and Construction, 0201 civil engineering, Civil and Structural Engineering
Published
2018

42. Moderne Eisenbahnbrücken als DickblechTrogbrücken - Optimierung der Auslegung für Ermüdung und Lebenszyklusbetrachtung

Author

Ulrike Kuhlmann, Tim Zinke, and Stephanie Breunig

Subjects
020303 mechanical engineering & transports, 0203 mechanical engineering, Mechanics of Materials, Mechanical Engineering, Political science, Metals and Alloys, 020101 civil engineering, 02 engineering and technology, Building and Construction, Humanities, 0201 civil engineering, Civil and Structural Engineering
Published
2018

44. Die Vielfältigkeit des Stahlbaus

Author

Joachim Lindner, Ulrike Kuhlmann, and Andreas Taras

Subjects
Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Building and Construction, Civil and Structural Engineering
Published
2021

49. Beulfelder unter mehraxialer Beanspruchung

Author

Joseph Ndogmo, Ulrike Kuhlmann, Martin Mensinger, Jörg Frickel, and Vahid Pourostad

Subjects
020303 mechanical engineering & transports, 0203 mechanical engineering, Mechanics of Materials, Mechanical Engineering, Metals and Alloys, 020101 civil engineering, 02 engineering and technology, Building and Construction, 0201 civil engineering, Civil and Structural Engineering
Published
2017

50. Einfluss der Zugspannungen auf das Beulverhalten eines Beulfeldes unter mehraxialer Beanspruchung - Nachweis nach DIN EN 1993-1-5, Abschnitt 10

Author

Vahid Pourostad, Antonio Zizza, and Ulrike Kuhlmann

Subjects
020303 mechanical engineering & transports, 0203 mechanical engineering, Mechanics of Materials, Mechanical Engineering, Metals and Alloys, 020101 civil engineering, 02 engineering and technology, Building and Construction, 0201 civil engineering, Civil and Structural Engineering
Abstract

Mit Einfuhrung der derzeit gultigen DIN EN 1993-1-5 [1] ist es moglich, unter Anwendung der Methode der reduzierten Spannungen, den gesamten Spannungszustand zur Berechnung eines einzigen Plattenschlankheitsgrades heranzuziehen. Die Interaktionskurven nach DIN EN 1993-1-5 ermoglichen somit eine systematische Ausnutzung der gunstigen Wirkung von Zugspannungen auf das Beulverhalten. Allerdings fehlen bislang Studien, die diese positive Wirkung rechtfertigen. Daher werden im Rahmen des vorliegenden Beitrages experimentelle und numerische Untersuchungen vorgestellt, die einen Einblick in das Beulverhalten mehrachsig beanspruchter Platten geben. Dafur wurden sechs Versuche an mehrachsig beanspruchten, schlanken Stahlplatten durchgefuhrt. Anschliesend erfolgten Simulationen der oben genannten Versuche. Das gleiche Beulverhalten konnte auch bei der numerischen Nachrechnung der Versuche beobachtet werden. Das validierte numerische Modell wurde fur die mit ABAQUS durchgefuhrten Parameterstudien herangezogen, um die Auswirkung verschiedener Einflussgrosen zu beurteilen. Fur die Durchfuhrung der Parameterstudien wurden vereinfachte Modelle mit verschiedenen Ansatzen fur die Randbedingungen verwendet. Auf der Grundlage der durchgefuhrten Parameterstudien konnte ein neuer Bemessungsvorschlag entwickelt werden. Der Vergleich mit den numerischen Ergebnissen zeigt dabei gute Ubereinstimmungen fur die untersuchten Lastfalle und rechtfertigt den Ansatz der positiven Effekte aus Zugspannungen.

Published
2017

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