Study on deformation control technique in deep foundation pit engineering

摘要

Through calculation and analysis on slope deformation of deep foundation pit with Mindlin elastic semi-infinite body theory, it is determined that the lateral displacement is maximum at 0.2 H distance from top of slope of deep foundation pit vertically, where it is proposed to set up out loading platform to out load and facilitate construction. Combined support of reinforced concrete beam and anchor is adopted for out loading platform to strengthen deformation control. Soil nail support combined support system is adopted for the rest.Verified through engineering practice and FLAC-2D numerical simulation, it is proved the support structure design based on deformation control is feasible, practical, reliable, economic and can be applied and verified in similar works.