ABSTRACT
The tests were performed using two different types of backfill: a gravelly sand and a fine silty sand. Initially, both backfills were loosely dumped. The resulting peak lateral pressure increases in the loosely dumped fill are shown by the open triangles in Figs 16(a) and 17(a). The solid lines in these figures are values of Ao-i,,„, p calculated by simple elastic analyses. Allowing for scatter in the measurements, the agreement is fairly good. The solid triangles show the residual earth pressure increases after load removal, and the dashed lines the residual compaction-induced lateral stresses calculated using the analytical techniques described in this chapter (Duncan and Seed, 1986). Agreement between these analyses and the field measurements can be seen to be good.
