Analysis on the Influence of Deep Foundation Pit Construction in Soft Soil Stratum on Adjacent Subway Station Interval
The south side of a deep foundation pit in soft soil stratum is adjacent to the existing subway station in-terval.The excavation and unloading of deep foundation pit will have an adverse influence on the safe operation of the subway.This paper adopts the finite element method to establish a three-dimensional numerical model of deep foundation pit-station-interval to study the influence of deep foundation pit excavation on station interval.The re-sults show that the maximum stratum deformation caused by foundation pit excavation is 16.9 mm,the maximum deformation of interval tunnel is 4.6 mm,and the max-imum deformation of station pavilion is 3.8 mm,which all meet the requirements of deformation limitation.The selection of foundation pit support structure is reasonable and feasible.
deep foundation pit constructionstation structureinterval tunnelnumerical simulationdeforma-tion
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NSTL
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