Numerical Simulation And Analysis Of Strut In Deep Foundation Pit Excavations

Concern about building technology has been developing, the surrounding are becoming more complicated. Foundation pit supporting technology faces a bigger challenge. A new braced retaining structure with piles be used in one commercial plaza foundation pit excavation of Jinan, trying to monitoring and analysis variation rules of displacement and stress-strain behaviors with this type supporting. Moreover, monitoring results compare to monitoring data lead to find the benefits and disadvantages about this simulation, providing technical reference for late parallel constructional works.In this paper, an actual engineering as background, as same time, analysis variation rules of displacement and stress-strain behaviors with this type supporting by FLAC3D simulations. All components, displacement and stress-strain behaviors go with pit excavation have been investigate:inclined pile level deformation distribution likes "ends small, Middle big"; and supporting pile bears large load, making more stability of the supporting structure. Inclined support transferring soil pressure effectively caused by foundation pit excavation, playing an active role in displacement of soil. Meanwhile, three-dimensional space model by FLAC3D, spatial property of excavation foundation pit has been considered.Numerical simulation comparing with the monitoring data, acquired the rules of retaining piles displacement. Although exist bias, but the general similar trend is similar. Numerical simulation methods are feasible, but the data and model can lead to the difference between the simulation results and field monitoring data.