Steel Buildings in Europe

Title A.4 Worked Example – Simply supported, primary composite beam 9 of 13 4 – 89 where: n r = 1 h p = 58 mm h sc = 100 mm b 0 = 82 mm  1 0 614 58 100 58 0 6 82 l , , k          ≤ 1,0 OK                   3 2 3 2 Rd 10 1,25 10 ; 0,29 1 19 25 31000 1,25 19 / 4 Min 0,8 450 0,614  P   81,66; 73,73 0,614 Min   = 45,27 kN Degree of shear connection The degree of shear connection is defined by: c,f c N N   where: N c is the design value of the compressive normal force in the concrete flange EN 1994-1-1 § 6.2.1.3 (3) N c,f is the design value of the compressive normal force in the concrete flange with full shear connection At the load location: The compressive normal force in the concrete flange represents the force for full connection. A c is the cross-sectional area of concrete, so at the load location: A c = b eff h c h c = h - h p = 140 – 58 = 82 mm  A c = 2250 × 82 = 184500 mm 2        3 10 1,5 25 184500 0,85 0,85 0,85 - C ck c c cd c,f  f A A f N 2614 kN Since the maximum moment is reached nearly at the load location, the studs should be placed between the support and the concentrated load. However, studs should also be placed between the concentrated loads.