This study critically evaluates the axial side resistance of driven precast concrete(PC)piles.A wide range of load test data are classified into drained and undrained databases and subsequently used in the investigation.Each database is further divided into:(1)compression and uplift loading and(2)round and square cross sections.Measured and predicted results are both applied to examine the representative analytical models,including the alpha(α),beta(β),and lambda(λ)methods.The statistical results show that the range of values of the empirical coefficient a is wide.The predicted results of the β method are underestimated in drained loading,but they are reasonable in undrained loading.The relationship between λ and pile depth is also developed.Based on the analyses,the relative merits of the three analytical models are established,and designs for analyzing the side resistance of driven PC piles are recommended.
展开▼
