Research on Anti Floating Technical Measures for Subway Stations with Zero Cover Soil in Water Rich Sand Layer
In order to find a solution that is suitable for improving the anti floating,internal force,and deformation of subway stations with zero cover soil in water rich sand layers,and has good economic efficiency,this article combines the engineering example of a subway station with zero cover soil.Under the premise of the participation of the retaining wall in the anti floating of the station,finite element software is used to make a comparative analysis on the anti floating stability,internal force,and deformation of the station under the three schemes of setting uplift piles under the bottom plate,setting broken line inverted arches under the bottom plate,and setting interlayer compression on the top plate.The results show that under the action of the above three schemes,the deformation and internal force of the station structure have been greatly improved,and all of them are beneficial for the station's anti floating.The effect of each scheme on the structure is related to the diameter and length of the uplift pile,the height of the bottom plate broken line inverted arch,and the thickness of the top plate soil pressure;setting uplift piles under the bottom plate is not conducive to the laying of the entire waterproof layer,and the broken line inverted arch scheme and top plate compression scheme avoid this problem;the scheme of setting uplift piles and setting broken line inverted arches on the bottom plate has poor economic efficiency,while the top plate compression method has good economic efficiency.It can also achieve a similar effect on improving the internal force and deformation of the station structure.
subway station withe zero cover soiluplift pilebroken line inverted archcompressionanti floating technologyscheme comparison
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