Study on the Supporting Features of Composite Soil Nailing Wall

This paper was based on a deep foundation pit support project in Beijing. FLAC3D software was used to simulate the excavation and support process of the foundation pit in detail according to design parameters and geological conditions. The experiment data of the horizontal and vertical displacements of walls, the axial forces of soil nailing and prestressed anchor cables during excavation and support process of the foundation pit provided a technical reference for the site construction and ensured the safety of the whole project.