VELACS model No. 3: Liquefaction in dense and loose sand columns
A dynamic centrifuge test on a saturated specimen of loose and dense sand columns prepared adjacent to each other in a laminar box was performed at Caltech. The test was also duplicated at University of California, Davis (UCD) and at RPI. An earthquake-like dynamic motion was supplied to the base of specimen and the responses of accelerometers, pore pressure and displacement transducers were measured. One of the duplicate tests (UCD) had comparable results to the primary test at Caltech. The input motion of the other duplicate test (RPI) was very different and could not be compared directly to the other two tests.