Model test and numerical simulation data of post-grouting piles

By combining finite element numerical simulation, the compressive bearing characteristics and load transfer laws of pile end grouting piles, pile end grouting piles, and pile end pile side composite grouting piles were analyzed.

The results indicate that these three pile types can effectively improve the ultimate bearing capacity of piles; The length of grouting on the pile side (n, 0 ≤ n ≤ 1) has a significant impact on the ultimate bearing capacity of the grouted pile on the pile side. When n ≤ 0.6, its ultimate bearing capacity significantly increases. Then, as n increases, the ultimate bearing capacity increases limitedly, indicating that due to the larger lateral stress in the lower soil, the grouting on the lower pile side more effectively improves the compressive bearing capacity.