Analysis of an Overlapping Welded Connection of an Element in Tension

Objective: Check the mode for calculating welded connections.

Task: Check the overlapping fillet welded connection of an element in tension.

References: Steel Structures. In 3 v. — V. 1. Elements of Steel Structures/ Gorev V.V., Uvarov B.Yu., Filippov V.V. and others — M.: High school, 2004. p. 158-159.

Compliance with the codes: SNiP II-23-81*, SP 16.13330.2011, SP 16.13330.2017, DBN B.2.6-163:2010, DBN B.2.6-198:2014.

Initial data:

Run = 400 MPa	Steel С285
t = 10 mm	Thickness of the plate
h = 200 mm	Height of the plate
N = 540 kN	Longitudinal force
kf = 8 mm	Weld leg
Rwf = 205 MPa	Manual welding with E46 electrodes
l = 15 cm	Lap length

 

Initial data file:

1.9.sav;
report — Kristall1.9.doc

 

KRISTALL initial data:
Steel: C285

Importance factor	1
Service factor	1
Group of structures according to the table 50* of SNiP II-23-81*	1

 

Properties of welding materials:
Characteristic resistance of the weld metal based on the ultimate strength, Rwun	450 N/mm2
Design resistance of the fillet welds for shear in the weld metal, Rwf	200 N/mm2
Type of welding	Manual
Position of weld	Flat
Climatic region	with temperature  t > -40°C

 

Type:	Parameters:
	Weld leg = 8 mm b = 150 mm h = 200 mm t = 10 mm tf = 12 mm

Internal forces and moments:

N = 540 kN
M_y = 0 kNm
Q_z = 0 kN

Checked according to SNiP	Check	Utilization factor
Sec.11.2 Formula (120)	of the weld metal	0.964
Sec.11.2 Formula (121)	of the metal of the fusion border	0.789

 

Comparison of solutions:

Check	of the weld metal
Theory	161 / 11,5 / 14 = 1
KRISTALL	0,964
Deviation, %	3,6

 

Comments:

The slight difference in the results is explained by the difference in the value of the design resistances R_wf = 205 MPa (source) and R_wf = 200 MPa (code and KRISTALL).