Abstract
The case study building experienced moment connection fractures and has instructure recorded response. Correlative analyses are performed using a probability approach to describe the connection rotational capacities. The Northridge calibrated model is then subjected to other scenario earthquake records. The main points include:
-Northridge connection damage can be reasonably simulated using models that idealize the rotation capacities as random variables,
-Many of the connection fractures occurred from beam moment demands that were less than the beam yield moments,
-Vertical earthquake excitation and gravity loads did not play a major role in the connection fractures,
-The damaged building can withstand another Northridge intensity quake,
-Near-source ground motions from great quakes have the potential to collapse the building with pre-Northridge type connection details, and
-Connection rotation capacity can make the difference between building survival or collapse during severe quakes.
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