FLAC3D Simulation Analysis of Excavation and Supporting Structure of Deep Foundation Pit

The purpose of this paper is to do the simulation analysis of excavation and supporting structure of deep foundation pit by using FLAC3D to improve the structural performance. Using FLAC3D create a three-dimensional model of the deep foundation pit excavation and support process simulation analysis. Get the deep foundation horizontal displacement, settlement, vertical stress and supporting structure internal force distribution and variation. Comparing the horizontal displacement, settlement and supporting structure masterpiece of FLAC3D simulation, the deep foundation software design and site testing, the three comparison results are basically the same, that the excavation engineering instance program design rationality, numerical simulation analysis is correct. FLAC3D numerical simulation software can be reasonable for deep excavation software design based on better step excavation support deep foundation engineering simulation, to reflect the stress of the pile anchor retaining the pit during excavation and deformation characteristics, which provide guidance for the design and construction of deep foundation pit support technology, and in-depth understanding of the mechanism of pile-anchor supporting role, prior assessment of the excavation engineering in order to reduce construction the risk of an accident. Similar deep foundation also has a reference value.