The Influence of Studs Spacing on the Shear Resistance of Walls

The studs of cold-formed steel stud walls usually spaced 400 mm and 600 mm. However, stud spacing of the test specimens and the finite element analysis models described above was 600 mm. Now the stud spacing of SSG wall, SSO wall and DSGO wall was adjusted to 400 mm, and the finite element analysis results of those walls are described in Table 5, the load-displacement curves are shown in Figure 12. When the stud spacing of SSG wall, SSO wall and DSGO wall was reduced from 600 mm to 400 mm, their shear resistance was increased by 14.47%, 24.11% and 29.96%, respectively. The stud spacing has obvious influence on the shear resistance of cold-formed steel stud walls, and this influence was strengthened with the increase of sheathing restriction.

Table 5. Finite element analysis results of walls.

Wall type

Stud spacing (mm)

P

1 max

(kN)

Shear resistance (kN/m)

SSG

400

10.62

4.43

600

9.29

3.87

SSO

400

33.47

13.95

600

26.98

11.24

DSGO

400

45.29

18.87

600

34.84

14.52

Fig. 12. Load-displacement curves of cold-formed steel stud walls.

Fig. 13. Load-displacement curves of wall with single-sided gypsum sheathing on the face.