Analysis of a Welded Connection with Fillet Welds for a Bending Moment
bf=18 cm; tf=0,8 cm; tw=0,6 cm; hw=24 cm; h=25,6 cm;
Objective: Check the mode for calculating welded connections
Task: Check the welded connection with fillet welds for a bending moment
References: Manual to SNiP II-23-81. Welded Connections. 1984. p. 28-29.
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 file:
| 1.1.sav | |
| report — Kristall1.1.doc |
Initial data:
| М = 75 kNm | Bending moment |
| Ryn = 345 MPa, Run = 490 MPa | Steel 15HSND |
| Rwf = 215 MPa, βf = 0,9 | Flat CO2 semiautomatic welding with a 2 mm diameter Sv-08G2S wire |
| γwf = γc = 1 | Service factors |
KRISTALL parameters:
Steel: C345 category 3
|
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 |
49949,032 T/m2 |
|
Design resistance of the fillet welds for shear in the weld metal, Rwf |
21916,412 T/m2 |
|
Type of welding |
Automatic and semiautomatic, diameter of the electrode wire not less than 1.4-2.0 mm |
|
Position of weld |
Flat |
|
Climatic region |
with temperature t > -40°C |
|
Type: |
Parameters: |
|---|---|
|
Section - Full assortment of GOST profiles.. Wide flange I-beam GOST 26020-83 26W1 |
tf = 6 mm Leg of weld near flange = 4 mm
|
Internal forces and moments:
N = 0 N
My = 75000 Nm
Qz = 0 N
Mz = 0 Nm
Qy = 0 N
Comparison of solutions:
|
Factor |
Strength of the weld metal |
|---|---|
|
Source |
208/215 = 0,967 |
|
KRISTALL |
0,951 |
|
Deviation, % |
1,655 |
Comments:
Deviations in the results of the calculation are due to the differences in the initial data. In this mode KRISTALL enables to select an I-section only from the assortment of rolled profiles. The I-section specified in theoretical solution has cross-sectional dimensions which do not have an exact assortment analog. When checking the connection with the help of KRISTALL, the closest I-section was selected – I-beam 26W1 GOST 26020-83.