Welded Connections

The mode enables you to perform checks of welded connections of the following three types:

• attachment of single and double angles to a gusset plate;
• attachment of overlapping steel sheets;
• butt attachment of a steel sheet, I-beam, channel, or pipe.

The set of checks depends on the type of the connection and the set of loads it is subjected to. All types of connections are checked in accordance with Section 11.2, and in necessary cases – with Sections 11.3, 11.5 of SNiP II-23-81*, or according to Section 15.1 of SP 53-102-2004 (Section 14.1 of SP 16.13330, Sec. 1.12.1 of DBN B.2.6-163:2010, Sec. 16.1 of DBN B.2.6-198:2014).

The dialog box contains three tabs: Type of Connection, Properties, Interaction Curves.

The first one contains buttons for selecting the type of the checked structure. It also contains drop-down lists for specifying data on the type of welding, method of welding, and the position of the weld in the course of work. One option has to be selected in each group, which enables to determine the β_f and β_z factors in accordance with Table 34* of SNiP II-23-81* (Table 36 of SP 53-102-2004, Table 38 of SP 16.13330, Table 1.12.1 of DBN B.2.6-163:2010, Table 16.1 of DBN B.2.6-198:2014).

Other properties needed for the analysis have been previously defined in the Steel, Materials for Welding, and Service Factor modes. Their values are displayed in the respective fields and can be modified by the user when necessary.

The Properties tab is used to specify information on the dimensions of the joint and to enter data on the forces acting in it (it is assumed that the point of application of forces is the center of mass of the section). This tab is also used to specify the weld legs checked for compliance with the design codes. The checked values are given in the table below.

The Interaction Curves tab displays interaction curves of force factors enclosing an area of the load-bearing capacity of the welded connection. This tab is absolutely identical to that of the Bolted Connections mode.

Welded connections are checked for: