Abstract
The paper presents a study on the seismic cross-aisle behaviour of drive-in steel storage racks obtained from full-scale shake table tests. The objectives of the study are to determine the natural frequency and damping from full-scale tests as well as the inelastic response of drive-in rack frames when subjected to seismic excitation including modes of vibration, 3D behaviour, base shear and damage propagation. Two different framing systems are considered in this study. One frame is fully braced in the cross-aisle direction with the diagonal braces extending from top to bottom, whereas the second frame is more flexible relying mainly on a portal frame type of stiffness and bending capacity of uprights in resisting the earthquake-induced actions. Different waveforms are used in the tests, obtained from actual ground motion records at various locations around the world. The paper also presents a comparison between the behavior of the two systems highlighting the key characteristics, advantages and disadvantages of each.
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