Abstract: Currently, there is no published references of seismic centrifuge test results on the sliding resistance caissons under the excavation conditions. This paper presents the first seismic centrifugal testing result on this topic. The input of the seismic waves are the actual earthquake recorded on May 18, 1940 Imperial Valley Earthquake at a site in El Centro, California. The input vibrations have a total of 1559 data points with a time interval of 0.02 seconds. The maximum acceleration duration the excavation was assumed to be 0.38g due to the lacked of the recorded maximum acceleration value. The bending moments of the sliding resistance caisson were measured by the strain gages and the deformations at the top of caisson were measured by the laser distance measurement. The seismic earth pressure and the accelerations at different depths were also measured by the earth pressure cells and the accelerometers that were embedded in the soils. The bottom of the caissons in the centrifuge test were in the fixed condition.

Key words: Sliding Resistance Caissons, Seismic Centrifuge Tests, Acceleration, Deformation, Bending Moments, Earth Pressures