Deformational Influence Of Foundation Pit On Foundations Of Style Constructions

Whether excavation have an adverse impact on the surrounding historic buildings discusses.Based on the measured data results in the field and the finite element software ABAQUS, westudy the deformation behavior of three-dimensional excavation. The results show as follows:(1) Force of support most is under pressure. Force of first support is larger than the restsupport. Force of support gradually decreases along with the depth of excavation. Horizontaldisplacement of support moves to foundation pit, and displacement of first support is largest.Displacement of support gradually decreases along with the depth of excavation.(2) Horizontal displacement of wall moves to the foundation pit. As long as the East andNorth wall is as structure of foundation pit, deformation is small. Horizontal displacement of thecenter wall is respectively0and10mm. Deformation of the other two sides is close to100mm.Simulation of the west and south wall is as the same with the monitoring results. Along with thedepth of wall, horizontal displacement of wall changes as inverted triangle, as the same with thesimulated results. At the same depth,middle displacement of diaphragm wall is larger than thefour corners.(3) After excavation settlement of foundation is almost0. settlement of11,12point is0.01mm. Simulation of displacement is increased with distance of foundation pit. Maximum andminimum sedimentation is0.0178m and0.0033m. Local inclination values are less than theallowable value of0.002m specification. Meet the specification requirements.The analysis indicates:(1) The field monitoring of foundation pit has been completed, and the deformation lawsof different monitoring contents are analysised. Foundation of structure foundations is predicted.The results show that we can ignore the impact on the deformation of foundation pit excavation.(2) Make a simulation analysis with ABAQUS. Study the distortion rule of foundation.Compare the calculate results of actual measurement and FEM. The finite element method canapply to the deep foundation pit, instruction engineering design and construction.Hope to use analysis results for predicting the deformation of foundation pit engineeringand the influence on adjacent buildings.