TY - JOUR
T1 - Experimental evidence for effective flexural-only stiffnesses to account for nonlinear flexural-slip behaviour of timber-concrete composite sections
AU - Sebastian, W.M.
AU - Bell, O.G.A.
AU - Martins, C.
AU - Dias, A.M.P.G.
PY - 2017/9/15
Y1 - 2017/9/15
N2 - Abstract The nonlinear behaviours of timber-concrete composite (TCC) members can be predicted via linear beam element analyses. The key is to quantify effective flexural-only stiffnesses (B) that capture the material nonlinearities from flexure-slip action of the TCC section, and to conduct the analyses using B profiles which satisfy equilibrium, compatibility and nonlinear constitutive links to the connections. This paper demonstrates the manner in which ad-hoc of a TCC specimen can underpin validation of that concept. The test-based nonlinear B profiles along the span are found to out-perform the Gamma method (which assumes uniform B) in load response prediction. Finally, future research to broaden this approach is outlined.
AB - Abstract The nonlinear behaviours of timber-concrete composite (TCC) members can be predicted via linear beam element analyses. The key is to quantify effective flexural-only stiffnesses (B) that capture the material nonlinearities from flexure-slip action of the TCC section, and to conduct the analyses using B profiles which satisfy equilibrium, compatibility and nonlinear constitutive links to the connections. This paper demonstrates the manner in which ad-hoc of a TCC specimen can underpin validation of that concept. The test-based nonlinear B profiles along the span are found to out-perform the Gamma method (which assumes uniform B) in load response prediction. Finally, future research to broaden this approach is outlined.
KW - Timber-concrete composites
KW - Effective flexural-only stiffness
KW - Nonlinear analysis
U2 - 10.1016/j.conbuildmat.2017.04.082
DO - 10.1016/j.conbuildmat.2017.04.082
M3 - Article (Academic Journal)
SN - 0950-0618
VL - 149
SP - 481
EP - 496
JO - Construction and Building Materials
JF - Construction and Building Materials
ER -