Headed Studs Used in Trapezoidal Steel Sheeting According to Eurocode 4

This paper presents the results of a recently completed research project at the Institute of Structural Design, Universität Stuttgart funded by Deutsches Institut für Bautechnik (DIBt). The main focus of the project was to assess the quality of the given approach in Eurocode 4 to determine the bearing resistance of headed studs used in trapezoidal steel sheetings. Therefore, 17 new push-out tests with steel sheeting within the field of application of Eurocode 4 have been performed. The main focus of the investigation has been the influence of the position of the headed stud in the trough and the influence of the various geometric parameters on the failure mode. At the moment, the existing design rules in Eurocode 4 for headed studs in trapezoidal steel sheeting do not take into account the position of the stud in the trough nor the variety of failure modes. The test results showed that in a number of cases the bearing resistance reached was smaller than predicted by Eurocode 4. Moreover, the construction rules of Eurocode 4 aiming at a ductile behavior could not always assure this. On the other hand, ductile failure occurred though some of the construction rules were not respected. As a result, the need for further in-depth investigation is emphasized.