Hybrid joints consisting of pre-tensioned bolts and a bonded connection, Part II: Large-scale experiments

Yokozeki, Koichi; Hisazumi, Kazumasa; Vallée, Till; Evers, Tobias; Ummenhofer, Thomas; Boretzki, Jakob; Albiez, Matthias

doi:10.1016/j.ijadhadh.2023.103523

Cited by 13 publications

(1 citation statement)

References 42 publications

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“…While bonding in timber construction has been state-of-the-art for decades [ 19 ], bonding in steel construction has been the subject of intensive research in recent years. Both new types of bonded connections [ 20 , 21 ] for steel structures and hybrid joining methods [ 22 ], combining grouts and adhesives [ 23 , 24 ] and bolts and adhesives [ 25 , 26 ] are being comprehensively investigated.…”

Section: Introductionmentioning

confidence: 99%

Bending Behavior of Hybrid Timber–Steel Beams

Haase,

Aurand,

Boretzki

et al. 2024

Materials

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Driven by climate change and the need for a more sustainable construction sector, policy is increasingly demanding and promoting timber hybrid construction methods. In the German state of Baden-Württemberg, every new public building has to be of timber or timber hybrid construction (Holzbauoffensive BW). The objective of multi-story buildings with large floor spans can only be achieved in a resource-efficient way by hybrid constructions combining timber and steel components. A research project recently completed at the Karlsruhe Institute of Technology was aimed at the development and systematic investigation of hybrid bending beams in which an advantageous combination of the materials steel and timber is used. For this purpose, steel profiles are integrated into timber cross-sections in a shear-resistant manner by adhesive bonding. As part of the experimental, numerical and analytical investigations, different cross-sections of steel and timber, as well as different construction materials, were considered (GL24h, LVL48p, LVL80p, S355 and S420). The results of large-scale four-point bending tests illustrate the potential of this new hybrid construction method. Depending on the geometry and material combinations tested, the bending stiffness could be increased by up to 250%, and the load-carrying capacity by up to 120%, compared to a glulam beam with identical dimensions.

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