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Due to the application of elastic interlayers for acoustic decoupling, wood screws to connect timber elements are stressed beneath axial and shear loads additionally by a bending moment. The equations to calculate the load carrying capacity of wood-wood-connections according to the Eurocode 5, lose their validity in case of application of interlayers with low shear resistance. Furthermore, the increasing flexibilities of the joints should be considered for a realistic static modelling.
Aim of the present work is to analyze the mechanical load bearing characteristics of wall-ceiling-connections of cross laminated timber with and without elastic interlayers. On the basis of experiments as well as analytical approaches, the load-deformation-behavior is discussed and contrasted to the current standards.
Der Beitrag zeigt die bauordnungsrechtlichen Anforderungen allgemein uns speziell hinsichtlich des Brandschutzes an nichttragende innere Trennwände auf. Dazu werden formalen Randbedingungen für die Nachweisführung, insbesondere mit Blick auf nach der EU-Bauprodukte-Verordnung CE-gekennzeichnete Produkte und Bausätze für Trennwände dargestellt.
Bio-based products show a great potential to reduce the dependence on fossil resources. Germany currently has a forerunner role in the EU, using biomass as the same resource base for material and energetic utilisation.
Beech wood is hyped in both ways: In material usage directly e.g., in the building sector to balance the possible scarcity of soft wood in the future, as well as indirectly as a feedstock for biorefineries, representing a long-term alternative to the fossil-based industry, and secondly, as energetic use due to its excellent burning quality.
The BIOECONOMY CLUSTER sees itself as an actor in a difficult tension field within implementation of the wood-based Bioeconomy. With a total stocking volume of about 635 million m3, beech is the most abundant hardwood tree species in Germany. Nevertheless, beech wood-based biorefineries compete in a difficile tension field.
One crucial factor is the reliable supply of raw materials - a consistent biomass quality, season-independent availability and efficient logistics of the raw material.
However, the production processes are technically feasible; thus, finally, there is no guarantee for selling the bio-based products to the obtained price.
How to overcome the strong tension field in the beech-based Bioeconomy? Different selected examples show possible approaches. To manage the wood-based Bioeconomy and the beech wood supply chain effectively, the influencing of factors and the managing of the same is crucial.