HomeStudies and consultingEarthquake : NuclearEstimate of the seismic structural margins of the RHF building

Estimate of the seismic structural margins of the RHF building

Fukushima stress test

Estimation of the seismic structural margins thanks to a numerical export and adaption, a non linear modeling of materials and time history dynamic analysis and push over analysis

The structure concerns the RHF building, protected by a containment chamber. Processing of the numerical model from HERCULE to Code_Aster. Achievement of the complete reinforced concrete building model. Walls and slabs are integrated in the model by multi-layer shells, beams and columns by multi-fiber beams. Non-linear material behavior laws : concrete (parabola-rectangle law taking into account of the traction limit, elasto-plastic with strain hardening steel).Dynamic non-linear time-history analyses. Non-linear push-over analyses for several seismic spectrums. Calculation of strength margins associated to the different seismic levels.

Numerical model obtained from a HERCULE to Code_Aster conversion
Numerical model obtained from a HERCULE to Code_Aster conversion
Capacity diagram – +X direction earthquake
Capacity diagram – +X direction earthquake
Plastic strain state of the reinforcement bars
Plastic strain state of the reinforcement bars
Strain development at different levels of the structure
Strain development at different levels of the structure