Load transfer model and improved transition method for load-settlement curve under O-cell pile testing method

By analyzing the data of O-cell pile testing, new load transfer models before and after post grouting are proposed. The precise conversion method used to load-settlement curve transformation under the O-cell pile testing method is improved, and the influence of continuity of soil on the settlement is considered. The rationality of the proposed models is shown by the practical engineering. Further analysis shows that the the influence of continuity of soil on the settlement of super-long piles is strong, the ultimate bearing capacity with considering the continuity of soil is less than that without, and the improved method is safer.