Research On Soft Landing Numerical Analysis Rectification Of The Builaing And Applied

This paper focuses on soft soil area cut pile landing Rectification issues, usinganalytical methods for joint action and continue pumping due to excavation on theconstruction of a deep soft soil caused Yunnan near pile foundation and the soildeformation, tilting buildings and Rectification were cut pile numerical simulation,the main results are as follows:(1) In the excavation and continue pumping after construction, excavation andconstruction of the middle region of the far-field soil occurred a slight bulgephenomenon, with the continued construction of the adjacent pumping pit, near the pitside of the body especially the ends of the pile pile the bottom of the body of the soilreaches a critical soil plasticity, with the growth of the plastic zone of soil by the timethe pile near the bottom of the pile to pile and body development.(2) For the same project using PKPM and ABAQUS results show that thecalculated wall PKPM with ABAQUS force differences, combined with thefoundation and ground deformation is not difficult to find, on the basis of theseparation of foundation soil and the more action after the frame, the upper structureon the basis of Department displacement and rotation, structural internal forceredistribution occurs, mainly for the middle of the wall on both sides of the verticalforce to disperse. Proved the conventional method of calculation results with a largeerror, the credibility of the results is still open to question.(3) Before excavation, pile size distribution of the axial force and bendingmoment are side pile (N2, N8)> in the pile (N5); in excavation and continuedpumping, the structure forces the more obvious changes occurred, the performance ofthe pile along the north-south direction changes in the larger axial force, bendingmoment and do not change significantly, indicating that the structure of the overalltilt.(4) Through the analysis of the various steps under the water line around theshape and scope of the analysis results showed that: a) the excavation and continuepumping after the pit drainage funnel formed a natural precipitation curve, near alarge pit at the soil seepage velocity foundation soil maximum flow velocity in theside of the bottom of the pit, where it is likely to cause damage to expand; b) set up inthe early waterproof curtain, soil seepage obvious, with time, it tends to seepage smooth, waterproof curtain side horizontal excavation of shallow soil barrierobviously, blinds significant effect.(5) Each batch of cut pile process, after a previous cut pile produce a cut pilestructure to a large settlement, through the force of each batch of cut pile processsuperstructure and pile deformation found in the middle and bottom transverse beamfoundation cut pile in the middle of the wall late in the pile should be cut Rectificationspecific attention to the parts of the design and construction of reinforced handle.