09 Rigid Connection Part9 Stiffness Calculation

This playlist series focuses on the rigid connection calculation according to EN 1993-1-8. A comparison is made with Ansys at the end of the series after hand calculation. Finally, tips for applying the semi-rigid connection to RFEM are presented.

A portal frame with two levels is presented, as shown in the figure below. We went through the connections in this playlist for both ends and beams. The Endplate welded to the HEA200 beam is bolted to a HEB300 column with 6M20 class 8.8, as shown in the figures below. Steel material is S355 for all parties.

This video shows the rotational stuffiness of rigid and semi-rigid connections according to EN 1993-1-8. The contents are as follows:

1. Introduction to clause 6.3.
2. Different components’ stiffness coefficients according to Table 6.11.
3. Required stiffness coefficient to be considered in the calculation according to table 6.10.
4. Equivalent stiffness for Endplate according to 6.3.3.1.
5. Equivalent lever arm according to 6.3.3.1(3)
6. fRotational stiffness of the connection.

Link to the description and detailed solution notes: Download