Quantitative Analysis and Study of the Impact of Tunnel Proximity Road Construction on Zoning
Relying on the southern end project of Foshan Metro Line 3,the quantitative analysis of the tunnel proximity project was carried out through three methods:numerical test,engineering measurement and theoretical analysis.The maximum vertical deformation of Xinfeng Road surface is used as the basis for establishing the influence zone,and the net distance between the tunnel and the road surface and the spacing between the double track tunnels are the influencing factors.Regression a-nalysis is conducted based on the maximum vertical deformation of the road surface obtained from nu-merical experiments using finite element analysis software.And by deriving the expression of the influ-encing factors of the proximity engineering,the zoning line is established to obtain the strong,weak and micro three influence zoning under the actual engineering conditions.According to the scale correspond-ing to the three impact zones,suitable control measures are provided,which can greatly reduce the max-imum settlement value of the pavement under the condition of economic feasibility,control it within the early warning value,and protect the main structure of the existing structure.
万方数据
维普
