Centrifuge Model Study on Pile Responses due to Adjacent Excavation

Lateral soil movements due to deep excavation works for substructure construction may induce excessive bending and lateral deflection on existing pile foundations in the vicinity. As field data on such cases are almost impossible to collect, a series of centrifuge model tests has been performed to investigate the pile responses due to excavation-induced soil movements on piles in sand with various relative densities. The test results are presented in terms of bending moment and pile deflection profiles. Comparison of maximum bending moment and pile head deflection for different tests are reported. The practical implications of the findings are also discussed in this paper.