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How do I superimpose generated equivalent loads from the seismic analysis?

Answer

When calculating with the equivalent load method, an equivalent load is determined from the individual mode shapes, as the name suggests. After a successful determination, you can export these equivalent loads in RFEM. Load cases are created automatically in RFEM.

The exported load cases must now be superimposed in a result combination. In this case, a quadratic superposition must always be applied for earthquake equivalent loads. Two types of superposition are possible, firstly the frequently used SRSS rule and the CQC rule. All load cases from the earthquake are always assumed to be permanently acting and superimposed according to the respective regulations. The calculation rules are defined in the current standards.

Keywords

Overlay Earthquake Dynamics

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  • Updated 21 October 2020

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