Abstract
ABSTRACTThis paper describes the construction and commissioning of an experimental facility for testing heavily loaded full‐scale steel storage racks under seismic excitation. A one‐degree‐of‐freedom rig was built to test drive‐in racks with pay load up to 60tons. The rig was supported on rollers moving along girders attached to the ground. Different sets of non‐destructive tests took place during the commissioning process. The first set of tests was for commissioning the hydraulic actuator. The test results showed that the test rig setup was able to reproduce feedback signals that are very close to earthquake demand waveforms based on actual recordings of seismic events at various locations around the world. The second set of non‐destructive tests was for determining the dynamic friction coefficient in the rig. Force versus displacement test results under different loading conditions showed that the average friction coefficient was not sensitive to the speed of the jack or the weight, and was found to be in the order of 1% which is negligible. Hence, the test rig was found to operate as intended and met the design objectives.
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