GRAITEC Advantage - FAQ feed GRAITEC Advantage - FAQ feed

GRAITEC FAQ News

How is a steel joint defined and calculated?

  • Software:

    Advance Design
  • Module

    General
  • Question:

    How is a steel joint defined and calculated?
  • Type:

    General
  • Difficulty:

    ***

Answer

For this example we will create a joint similar to the one shown in the following figure:

How is a steel joint defined and calculated How is a steel joint defined and calculated

How is a steel joint defined and calculated






First we will create a 1.5m column with a 90° beam 1.5m long. The elements have an IPE 360 section and are made from S235. At the end of the beam we will have a 20 kN force, as shown in the following figure.




After the structural analysis we will obtain the following results:

How is a steel joint defined and calculated

How is a steel joint defined and calculated




Activate the "Connection creation" toolbar, and, from it, select the command to create the desired joint: "Create a standard beam-column fixed connection".




Next, select the structural elements connected by this connection: first the column must be selected and then the beam. The connection can be created in the modeling stage or in the analysis stage.

How is a steel joint defined and calculated How is a steel joint defined and calculated


After the connection is created, select the connection to see its properties window. In the properties, select the "Connection type": "Flange Haunch" or "Moment End Plate". For this example we will use the "Flange Haunch" connection.

In the "Parameter" option, select "Advance Steel Joint" to open the properties window of the connection. All the parameters defining the connection are found in this window.

How is a steel joint defined and calculated



Using all the options and parameters in the properties window define the connection characteristics. In this example we will define a connection as shown in the following figure.

How is a steel joint defined and calculated

To define a connection as shown, enter the following parameters.

How is a steel joint defined and calculated

The fist step is to define the "End Plate" characteristics; the next one defines the column end.

How is a steel joint defined and calculated

The haunch body is created from an IPE 369 profile cut with an angle, and the flange haunch does not have an additional plate.

The connection does not have an "Additional Rafter".

How is a steel joint defined and calculated

The 1 and 3 stiffeners are defined as "full" between the column flanges, and the stiffeners 2 and 4 are defined as "none".

Select the "Stiffening type" as "Standard". All the options defining the other stiffening types (e.g., "Morris", "Web Doubler", etc.) are not available.

How is a steel joint defined and calculated

How is a steel joint defined and calculated

How is a steel joint defined and calculated

The bolts are defined having 20mm diameter and grade of 8.8. The bolts are also defined as forming 2 groups of 2 rows each.

The connection does not have any other stiffener.

The welds are defined as shown in the following figure:

How is a steel joint defined and calculated

How is a steel joint defined and calculated

How is a steel joint defined and calculated

After all the parameters are defined for the desired connection, the last option window must be set. On this tab, select the format in which the report will be generated: "RTF" or "HTML".

Even if the connection can be created in the model stage or in the analysis stage, the report can be generated only from the analysis stage. This way the report is generated after the calculation is done and the forces, inside the connection, are known.

To generate the report use the "Report" command.

How is a steel joint defined and calculated