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Abstract:	Stützen und Träger aus Stahlprofilen können in Fundamente oder Wände aus Stahlbeton einbetoniert werden. Diese Anschlüsse wirken in der Regel wie Einspannungen, die eine ausreichende Einspanntiefe erfordern. Im Folgenden wird eine verallgemeinerte Berechnungsmethode für in Stahlbetonkonstruktionen eingespannte Stahlprofile aus gewalzten I-Profilen, geschweißten I-Profilen, runden Hohlprofilen, eckigen Hohlprofilen und einzelligen Kastenquerschnitten vorgestellt. Für Beanspruchungen infolge einachsiger Biegung um die starke und schwache Profilachse werden der profilabhängige Ansatz der Betondruckspannungen im Einspannbereich und die Ermittlung der Einspanntiefe behandelt. Unter Berücksichtigung der Normalkraft werden an den maßgebenden Stellen Tragfähigkeitsnachweise für die Stahlprofile geführt. Als Ergänzung zu den Berechnungsformeln werden Bemessungshilfen zur Verfügung gestellt, die die Wahl der mitwirkenden Breiten und der Einspanntiefen erleichtert. Generalized calculation method for steel profiles embedded in concrete - embedment depths, design at the ultimate limit state and design aids Columns and beams made of steel can be concreted into reinforced foundations or walls. Corresponding connections are in general treated as moment resisting restraints, however, requiring a sufficient embedment depth. In the following, a generalized calculation method for restrained steel profiles made of rolled I-sections, welded I-sections, circular hollow sections, rectangular hollow sections, and single-celled box sections is presented. For uniaxial bending about the strong and weak section axis, the profile-dependent approaches for considering the concrete compression within the restraint and the determination of corresponding embedment depths are discussed. Taking axial normal force into account, the load-bearing capacity of the steel profiles is verified at relevant positions. Design aids are provided to supplement the calculation formulae and to facilitate the selection of the required effective widths and the embedment depths.
Source:	Stahlbau 92 (2023), No. 1
Page/s:	2-26
Language of Publication:	German

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