NEESR-SG: Self-Centering Damage-Free Seismic-Resistant Steel Frame Systems SC-MRF High-Level DBE/Median MCE Hybrid Simulation

The earthquake input for this simulation will produce a response between the high-level (median plus one standard deviation) design basis earthquake (DBE) response and the median-level maximum considered earthquake (MCE) response. The input ground motion is the Canoga Park record from the 1994 Northridge event, scaled by 1.275. This record was used previously in a hybrid simulation of a 4 story, 2 bay concrete-filled-steel-tube column MRF. The purpose of this simulation is to compare the performances between the two MRFs. Yielding is expected in the first-story columns of the SC-MRF at the base and no other damage is expected. The roof drift will be approximately 4.0% radians. The structure is expected to self-center (without significant residual drift) during this simulation.

The 4-story, 2-bay SC-MRF test structure has been subjected to numerous previous laboratory tests, including several median-level frequently occurring earthquake (i.e., FOE, with 50% probability of occurrence in 50 years) hybrid simulations, two low-level DBE hybrid simulations, one median-level DBE hybrid simulation, and one high-level DBE hybrid simulation. From these previous laboratory tests, the test structure has no notable damage or residual drift.