Deep Barrette Pile Capacity with Aging Effect

Abstract

Two instrumented barrette piles of the highest high-rise building in Bangkok city were tested in order to verify the ultimate pile capacity. Their sizes were approximately 1.2×3.0x66m depth and their pile tips seated in the second very dense silty sand layer. The first tested barrette pile (TP1) was tested at 43 days after pile completion while 72 days curing time was allowed for the second tested barrette pile (TP2). Aging Effect of barrette pile was observed. Barrette pile number TP1 showed low loading capacity with high settlement while higher loading with lower settlement was recorded in the tested barrette pile number TP2. The value of adhesion factor (α) and friction factor (β) of the first tested pile (TP1) were studied and it shows well agreement with typical values of Bangkok soil while the second showed that its values were at higher bound of the typical.