YouTube zu HBV
Normen
In Ergänzung der EC 5 »Bemessung und Konstruktion von Holzbauten« soll der HBV genormt werden. In Vorbereitung hierauf arbeiten mehrere Forschungseinrichtungen in Europa zur Zeit an einer Technical Specification.
Eigenschaften des HBV
- große Spannweiten
- geringes Eigengewicht
- guter Feuerwiderstand
- guter Schallschutz
- geringe Schwingungsanfälligkeit
- Vorfertigung möglich
A timbered ceiling with TCC is 10 times more rigid
One major objective of refurbishment of timber-beamed ceilings is the improvement in the vibration properties. The shear connectors that are turned into the timber beams and the locally poured concrete reinforce the entire timber ceiling by approximately a factor of 10. The shear connectors under load, but also in the event of earthquakes, under wind loads or high water levels will prevent a relative shift between timber and concrete.
Any shift between beam and concrete is eliminated.
Imagine a model in the form of a thick book with soft binding, where the book’s pages shift laterally at the edge, when the middle part is pressed. In the model, all pages would be bonded full-face on all sides. Thereafter, when subjected pressure, the book would have significantly greater stiffness and stability, since the pages could no longer be displaced relative to one another. This corresponds to the manner in which the vibration is reduced in the Elascon Timber-Concrete Composite system. The built-in connecting screws (shear connectors) prevent the shift been timber beams and concrete virtually entirely.
