Evaluation of the various floors and impact on plant design basis spectra as a result of movement of heavy loads along the load path

Objective:

To determine the impact on existing floor structural qualification and seismic design spectra as a result of movement of some heavy loads across various floors of a large reinforced concrete structure.

Solution:

ENOVA created finite element model of the supporting floor coupled with the building stick model to minimize conservatisms associated with uncoupled response of two nearly tuned sub-structures. Non-linear analyses were performed to determine stability of the steam generators being carried on a large transporter to determine realistic seismic impact loads, which were then used for follow-up qualification of the floor.