TY - GEN
T1 - Two-way spanning CLT-concrete-composite-slab
AU - Loebus, Stefan
AU - Winter, Stefan
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
KW - CLT
KW - Effective bending stiffness
KW - Force-fitting element joint
KW - Fully threaded screw
KW - Natural frequency
KW - Notch
KW - Push-out test
KW - Shear connection
KW - TCC
KW - Torsional bending stiffness
KW - Two-way spanning slab
UR - http://www.scopus.com/inward/record.url?scp=85010952216&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85010952216
T3 - WCTE 2016 - World Conference on Timber Engineering
BT - WCTE 2016 - World Conference on Timber Engineering
PB - Vienna University of Technology
T2 - 2016 World Conference on Timber Engineering, WCTE 2016
Y2 - 22 August 2016 through 25 August 2016
ER -