The shallow buried and concealed excavation method has become the main construction method for subway tunnels in bustling urban areas due to its simple construction process,low ground interference,and strong geological adaptability.However,its construction will inevitably have an impact on adjacent buildings.Based on the CRD method construction project of a tunnel on Beijing Metro Line 22,numerical simulation methods were used to finely simulate the entire construction process of the vertical shaft and horizontal passage,as well as the CRD method double track tunnel.The deformation control indicators of the overpass were proposed,and the deformation laws and control measures of adjacent existing pedestrian overpasses under the influence of construction were studied.
维普
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