Abstract: The uplift force generated by the groundwater will often cause adverse influence or even damage to the building foundations. Therefore, the anti-buoyancy design is a crucial link in the underground structures. At present, the commonly used anti-buoyancy technology is mainly to increase the structure’s self-weight and to bury the anti-uplift pile (anti-uplift anchors). This paper focuses on the principles of the mechanism, the classification, the application areas and the axial capacity of the anti-buoyancy piles. Combined with a case history of the Suzhou Campus of Nanjing University, the application of the resistant pile is analyzed. The test method of the axial static load test is conducted on site. By presenting the load test results, the axial capacity of the pile meets the design requirements. Therefore, the reliability of the anti-buoyancy design and the safety of the structure are achieved.

Key words: Groundwater, Anti-Buoyancy Design, Anti-Uplift Piles, Ultimate Uplift Axial Capacity