190 Diagonal shear resistance Take one wave length of the composite slab as the calculation model: Calculation model 1000 305 140 Fig.2 Calculation model Diagonal shear resistance:.7.7xx10059 2 2 2=9.92kW Where b:calculation width of slab,normally be taken as mean width of ribs of steel deck; ho:mean depth of slab. The ultimate design load: 6-6×9.92 =39.68kW/m2 bl 1.5
Diagonal shear resistance Take one wave length of the composite slab as the calculation model: 0 165 140 110 59 0.7 0.7 1.1 9.92 2 2 V f bh kN u t Calculation model Where b: calculation width of slab, normally be taken as mean width of ribs of steel deck; h0 : mean depth of slab. Fig. 2 Calculation model 1 2 V q l u u 6 6 9.92 2 39.68 / 1.5 u u V q kN m bl Diagonal shear resistance: The ultimate design load:
Diagonal shear resistance As the bending moment design,the ultimate design load changes with the different slab spans Table 2 shows the ultimate design loads with different spans calculated from the diagonal shear resistance Table 2 The ultimate design loads L(mm) 1500 1650 1800 1950 2100 2250 2400 2550 2700 2850 3000 3150 3300 qu(kN/mm2 39.68 36.07 33.07 30.52 28.34 26.45 24.80 23.34 22.04 20.88 19.8 18.90 18.04 4
Diagonal shear resistance As the bending moment design, the ultimate design load changes with the different slab spans. Table 2 shows the ultimate design loads with different spans calculated from the diagonal shear resistance L(mm) 1500 1650 1800 1950 2100 2250 2400 2550 2700 2850 3000 3150 3300 qu (kN/mm2 ) 39.68 36.07 33.07 30.52 28.34 26.45 24.80 23.34 22.04 20.88 19.8 4 18.90 18.04 Table 2 The ultimate design loads