Analysis of Steel Pipe Inclined Support and Earthwork Excavation Technology in Adjacent Subway Deep Foundation Pit
In this paper,the deformation characteristics of the foundation pit structure and surrounding structures under different excavation conditions are analyzed by finite element method,and the construction technology in the process of excavation and support is deeply analyzed,and the construction effect is evaluated.The results show that the deformation of the wall is 0.04 mm,the differential settlement of the two sides of the subway station is 0.02 mm,and the horizontal displacement of the supporting structure is 4 mm under the condition of symmetrical excavation and reserved soil.The deformation of single-side excavation+no reserved soil wall is 2 mm,the differential settlement of both sides of subway station is 0.5 mm,and the horizontal displacement of supporting structure is 11.6 mm.The foundation pit excavation scheme with symmetrical excavation and reserved soil has the least deformation to the side wall of subway tunnel and the supporting structure of foundation pit itself.
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