By taking a real foundation pit engineering as an example, the deformation characteristics of supporting structure of a deep foundation pit at excavation stage was simulated by means of a finite element software PLAXIS, and the horizontal displacement of supporting pile was measured and analyzed. The results show that the prestressed pile had a great impact on displacement of pile enclosure, which is a more effective way to control the envelope; the Hardening-soil model analysis was used to describe the characteristics of the soil unloading, and the results in...
