Analysis of the Impact of New Urban Roads on the Stability of Existing Rail Tunnel Structures
To study the impact of new urban road construction and operation on the structure of existing rail tunnels,and ensure the operational safety of existing tunnel structures.This article takes a certain city road as an example to analyze the mechanical impact mechanism and spatial relative relationship of the new road on the adjacent tunnel structure.Secondly,based on the strength reduction method,a numerical model is established using finite element software to obtain the deformation law of the new road passing through the existing track tunnel structure and surrounding rock.It is shown that after taking reasonable engineering measures,the impact on the existing tunnel structure is relatively small when constructing roads outside the double tunnel contour,and the surrounding rock of the existing tunnel is in an elastic state.
New urban roadsExisting track tunnel structureSurrounding rock deformationRock mass stress
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