NEESR-SG: Self-Centering Damage-Free Seismic-Resistant Steel Frame Systems SC-MRF Median MCE Hybrid Simulation
October 28, 2008
The earthquake input for this simulation will produce the median-level maximum considered earthquake (i.e., MCE, with 2% probability of exceedance in 50 years) response. The input ground motion is the 5082-235 record from the 1994 Northridge event, scaled by 2.744. Minor yielding is expected in the columns at the base and in the beams at the 3rd floor and roof. No other damage is expected. The roof drift will be approximately 3.6% radians. The structure is expected to self-center (without significant residual drift) during this simulation.
The 4-story, 2-bay SC-MRF test structure is based on a prototype structure designed for a site in Van Nuys, California. The test structure has been subjected to numerous previous laboratory tests, including several median-level frequently occurring earthquake (i.e., FOE, with 50% probability of exceedance in 50 years) hybrid simulations, two low-level DBE hybrid simulations, one median-level DBE hybrid simulation, one high-level DBE hybrid simulation, and one high-level DBE/median MCE hybrid simulation. From these previous laboratory tests, the test structure has no notable damage or residual drift.