Nonlinear Material Behavior of the Bridge Components - Finite Element Analysis and Design of Steel and Steel-Concrete Composite Bridges - page 87

P

180 180 180

35

150

1 50

150

250

1 50

250

1 00

35
30 recess

150 260

150

200 200

200

Mortar base

Reinforcement:
10 mm diameter ribbed bars

Steel section:
254×254×89 kg UC

100

600

Figure 2.18 Standard push-off test specimen specified in EC4 [ 2.37 ] .

reinforcement specified and the size of the slabs are greater than that of the
earlier British Standard push-off test [ 2.38 ] shown in Figure 2.19 .EC4
[ 2.37 ] gives results that are less influenced by splitting of the slabs and so give
better predictions of the behavior of connectors in beams as mentioned by
Johnson [ 2.39 , 2.40 ] .

2.6.3 Complete and Partial Shear Concoction
The connection between the steel beam and the concrete slab is called
“complete” in the sense that the slip and uplift at the interface of the two
elements are negligible. Shear connection in composite beams is identified
[ 2.41 , 2.42 ] as complete when the beam has a bending strength that would
not be increased by the addition of further connectors. On the other hand,
the connection between steel beam and concrete is called partial when
fewer connectors are used than are required for the complete shear connec-
tion. The term “partial connection” should not be considered to imply