Can I consider the normal force when designing a rigid end plate connection according to the DSTV guideline?

Answer

In the first place, the typified moment-resisting connections of the DSTV guideline are not designed for loading by a normal force. However, a load of up to 5% of the plastic normal force resistance of the connected beam may be neglected according to the instructions given in the guideline. If there is a higher axial force contained in the beam, a warning message also appears in RF‑/JOINTS Steel - DSTV.

Figure 01 - Warning Message for Acting Normal Force 5% N_pl,Rd

With the additional volume of the 2018 guideline, additional moment-resistant connections of the IM designation were added. In the beam-to-beam connection type, they are also designed to resist the normal forces. If you design such a connection, the normal force resistance design including the MN interaction appears instead of the warning message.

Figure 02 - M-N Interaction for IM Connections

For beam-column connections, the normal force resistance of column components is not included in the table values according to the DSTV guideline. Therefore, the connection must be designed separately again. Consequently, the warning message appears anyway. As an alternative, you can use RF‑/JOINTS Steel - Rigid.

Keywords

End plate joint DSTV Typified connection Normal force resistance

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  • Updated 10 November 2020

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