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Connections with inclined screws and increased shear plane friction [in press]

Aurand, Simon; Blaß, Hans Joachim

Abstract:
Joist to header connectors are widely available in different shapes and sizes. One of the most common types resembles dovetail connections, where two parts slide into each other to enable load transfer (Figure 1a). Usually, aluminium is used for the connectors. One scope of the here presented project was to replace the aluminium with densified veneer wood (DVW). The connectors are mostly fastened with self-tapping and fully threaded screws, which are often inclined by 45° to the connector plane. In such connections with inclined screws, the load parallel to the shear plane is mainly transferred by axial screw loading, see Bejtka & Blass (2002). Due to equilib-rium conditions, a compressive force results perpendicular to the shear plane. This compressive force leads to frictional resistance, which depends on the size of the compressive force and the coefficient of friction µ. For connections with inclined screws, this additional load-carrying capacity can be taken into account by default, although the screws are loaded in tension. This is the difference to connections un-der combined lateral and tensile load, where the load increase due to friction, i.e. ... mehr


Zugehörige Institution(en) am KIT Versuchsanstalt für Stahl, Holz und Steine (VAKA)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 16.08.2021
Sprache Englisch
Identifikator KITopen-ID: 1000139615
Erschienen in Proceedings of the International Network on Timber Engineering Research (INTER) 2021 - Meeting 54, Online Meeting, August 16-19, 2021. Ed.: R. Görlacher
Veranstaltung 8th International Network on Timber Engineering Research (INTER 2021), Online, 16.08.2021 – 19.08.2021
Verlag Timber Scientific Publishing
Seiten 147-168
Schlagwörter inclined screws, shear plane, friction, coefficient of friction COF
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