Experimental study of the mechanical behavior of timber-concrete shear connections with threaded reinforcing bars

Experimental investigation of bamboo-concrete composite beams with threaded reinforcement connections

“…The secant slope K of the load-slip curve was used by researchers to define the shear stiffness ( K = P/S ). To reflect the shear stiffness at different loading stages, the secant slopes at loads of 0.4 P max , 0.6 P max and 0.8 P max were defined as the initial stiffness K s,0.4 , serviceability stiffness K s,0.6 , and ultimate stiffness K s,0.8 , respectively [ 38]. The ductility coefficient D can be defined as the ratio of the ultimate displacement S u to the yielding displacement S y .…”

“…Du et al [37] investigated the shear behavior of inclined cross screws for TCC beams, and cross screws were suggested as an optimal arrangement for screws. Djoubissie et al [38] suggested a simple composite system for TCC structures using reinforcing steel bars, and the materials were simple and accessible on the market. Good ductile behavior can be achieved by connections with steel bars.…”

Experimental investigation on the long-term behaviour of prefabricated timber-concrete composite beams with steel plate connections

“…In addition, notched [8] , [9] and glued-in steel-plate connections [10] , [11] were proposed to obtain better loading-capacity and slip stiffness. Djoubissie et al [12] found that the shear strengths and slip moduli of notched-rebar connections were improved by 40% and 5.3 times, respectively, compared with pure rebar connections. The composite efficiency of TCC floors with notched connections reached to 83.4% [13] .…”

Behavior of Shear Connectors Formed by Bonded-in “X” Type Steel Bars in Wood-Concrete Specimens

“…Sliding modulus is the relation between applied force and the relative displacement between wood-concrete, considering simultaneously wood, concrete and connector deformations [6,7]. In Brazil, there are few published studies on mixed wood-concrete structures.…”