Description

Three plates are connected in two configurations, namely with a transverse weld and with a longitudinal weld. The steel grade, length, and throat thickness of the weld are the variable parameters in the study. The joint is loaded by a normal force.

The model was created in IDEA StatiCa Connection application.

Fig. 1: Geometry of welded lap joint with transverse weld

Analytical Model

The design resistance per unit length of a fillet weld in fire should be determined from:

\[ F_{w,t,Rd}=F_{w,Rd}k_{w,\theta}\frac{\gamma_{M2}}{\gamma_{M,fi}}\]

where \(k_{w,\theta}\) is obtained from EN 1993-1-2, Table D.1 for the appropriate weld temperature; \(F_{w,Rd}\) is determined from EN 1993-1-8, Cl. 4.5.3.

Verification

Tab. 1: Transverse fillet welds

Fig. 2: Parametric study of temperature for transverse weld

Fig. 3: Parametric study of steel grade for transverse weld

Fig. 4: Parametric study of weld length throat thickness for transverse weld