ABSTRACT
To compare and discuss the treatment effects of the “traditional dynamic compaction method”, “column hammer dynamic compaction method,” and “DDC composite foundation” commonly used in the thick fill foundation treatment of airport engineering, this paper takes the thick fill foundation of Shiyan Wudang Mountain Airport as the foundation, and takes the PLAXIS finite element numerical simulation as the means to carry out numerical simulation analysis of three foundation treatment methods. Through analysis, it is found that the critical filling thickness of the DDC composite foundation is the largest, followed by column hammer dynamic compaction, and the traditional dynamic compaction is the smallest. In the range of foundation treatment depth and the range of foundation treatment influence depth, the post-construction settlement increases linearly with the thickness of the filled foundation, and the growth slope is the same under the three types of foundation treatment. When the thickness of pile foundation is small, the effect of the three kinds of foundation treatment tends to be similar.
