Issue 68

H. Mostafa et alii, Frattura ed Integrità Strutturale, 68 (2024) 19-44; DOI: 10.3221/IGF-ESIS.68.02

Studied parameters

dimensions (mm)  /  max

 '/  max

f y

f c ’

Model

Group

number

number

Slab thickness t s (mm)

Gratings number Notes

(MPa)

(MPa)

Column

position

Gratings

thickness(mm) Gratings

dimensions (mm) Gratings

Concrete

cover (mm)

Control model (CM)

CM SCM

25

400

250 400x400 0.35 0.20

30

15 1000x1000 Middle 1

SM01 SM02 SM03 SM04 SM05 SM06 SM07 SM08 SM09 SM10 SM13 SM14 SM15 SM16 SM17 SM18 SM19 SM20 SM11 SM12

400 400

250 400x400 0.35 0.20 250 400x400 0.35 0.20 250 400x400 0.35 0.20 250 400x400 0.35 0.20 300 400x400 0.35 0.20 350 400x400 0.35 0.20 250 400x500 0.35 0.20 250 400x600 0.35 0.20 250 400x400 0.50 0.20 250 400x400 0.70 0.20 250 400x400 0.35 0.20 250 400x400 0.35 0.20 250 400x400 0.35 0.20 250 400x400 0.35 0.20 250 400x400 0.35 0.20 250 400x400 0.35 0.20 250 400x400 0.35 0.20 250 400x400 0.35 0.20 250 400x400 0.35 0.15 250 400x400 0.35 0.25

30 30 30 30 30 30 30 30 30 30

15 1000x1000 Middle 1 15 1000x1000 Middle 1 15 1000x1000 Middle 1 15 1000x1000 Middle 1 15 1000x1000 Middle 1 15 1000x1000 Middle 1 15 1000x1000 Middle 1 15 1000x1000 Middle 1 15 1000x1000 Middle 1 15 1000x1000 Middle 1

30

Effect of f c ’

1

35

25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25

500

2

Effect of f y

600

Effect of slab thickness

400

3

400 400 400 400 400

Effect of column dimensions Effect of main steel ratio/  max Effect of secondary steel ratio/  max Effects of concrete cover

4

5

400

30

15 1000x1000 Middle 1

6

400

30

15 1000x1000 Middle 1

400 400 400 400 400 400 400 400

15 1000x1000 Middle 1 15 1000x1000 Middle 1

50

7

20

Effect of grating thickness

30

1000x1000 Middle 1

30

8

30 30 30 30 30

1000x1000 Middle 1 1200x1200 Middle 1 1400x1400 Middle 1

38

Effect of grating dimensions

15 15

9

Effect of grating position

15 1000x1000

1

Top

10

15 1000x1000 Bottom 1

Top, and bottom Top, middle and Bottom

SM21

25

400

250 400x400 0.35 0.20

30

15 1000x1000

2

Effect of numbers of gratings

11

SM22

25

400

250 400x400 0.35 0.20

30

15 1000x1000

3

Table 5: Parametric study program.

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