Page 264 - Handbook of Structural Steel Connection Design and Details

Welded Joint Design and Production

Welded Joint Design and Production 249

σ 2

ε = zero
2
Figure 3.32 The highly restrained
σ 3 region at the junction of the beam
ε = +.001 and column flange as shown in
3
Fig. 3.27. (Courtesy of The
ε = zero Lincoln Electric Company.)
1
σ 1
Figure 3.32 shows an element from point A (Fig. 3.27) at the junc-
tion of the beam and column flange. Whether weld metal or the mate-
rial in the column or beam is considered makes little difference. This
region is highly restrained. Suppose it is assumed:
ε 0.001 in/in (as before)
3
ε 0 (since it is highly restrained with little strain possible)
2
ε 0
1
Then from the given equations, the following stresses are found:
17.31 ksi
1
17.31 ksi
2
40.38 ksi
3
In Fig. 3.33, these stresses are plotted as a dotted circle.
If these stresses are increased to the ultimate tensile strength, it is
found that
30.0 ksi
1
30.0 ksi
2
70.0 ksi
3

27.5
σ c1 τ 1–3 = 20

σ 1 σ 2 σ 3 = 70
Figure 3.33 A plot of the tensile
stress and shear stress from
Fig. 3.32. (Courtesy of The
Lincoln Electric Company.)

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