Two-way spanning CLT-concrete-composite-slab

Stefan Loebus, Stefan Winter

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

This paper examines the load-bearing behaviour of cross-laminated-timber-concrete-composite slabs. The inhomogeneous distributed orientation of the trajectories of principal stress within the slab effected the design of the shear connection between the cross-laminated-timber (CLT) and concrete layer. Two well-known shear connection types, fully threaded screws in an angle of 45° and rectangular milled in notches, were examined in bi-axially loaded push out tests. Natural frequency tests and medium-scale test including the two shear connection types and different CLT-layer configurations determined the effective bending stiffness of the slab and the effective torsional bending stiffness of the slab respectively. The results facilitate the description of the bi-axial load-bearing behaviour, and establish a basis for a structural design model in two-way spanning CLT-concrete-composite-slab engineering. The paper eventually suggests first calculation models, a simplified FEM-model and a grid model. In this regard, a force-fitting element joint was developed and tested for practical reasons.

Original languageEnglish
Title of host publicationWCTE 2016 - World Conference on Timber Engineering
PublisherVienna University of Technology
ISBN (Electronic)9783903039001
StatePublished - 2016
Event2016 World Conference on Timber Engineering, WCTE 2016 - Vienna, Austria
Duration: 22 Aug 201625 Aug 2016

Publication series

NameWCTE 2016 - World Conference on Timber Engineering

Conference

Conference2016 World Conference on Timber Engineering, WCTE 2016
Country/TerritoryAustria
CityVienna
Period22/08/1625/08/16

Keywords

  • CLT
  • Effective bending stiffness
  • Force-fitting element joint
  • Fully threaded screw
  • Natural frequency
  • Notch
  • Push-out test
  • Shear connection
  • TCC
  • Torsional bending stiffness
  • Two-way spanning slab

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