A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Study on Deformation Regularity and Control Measure of Existing Metro Tunnels Caused by Viaduct Construction
The construction of the foundation pit has a negative impact on the existing shield tunnel below, and if not properly controlled, it could lead to construction risks and affect operational safety. In this paper, the construction of a viaduct pit over an existing metro tunnel is used as an example. We analyzed the soil and tunnel deformation under various construction conditions by numerical method and quantified the effect of strengthening measure. The results show that the shield tunnel produced a large vertical deformation and a small horizontal displacement during the construction, while grouting can reduce the ground uplift by about 30% and the deformation of the existing tunnel by 50%.
Study on Deformation Regularity and Control Measure of Existing Metro Tunnels Caused by Viaduct Construction
The construction of the foundation pit has a negative impact on the existing shield tunnel below, and if not properly controlled, it could lead to construction risks and affect operational safety. In this paper, the construction of a viaduct pit over an existing metro tunnel is used as an example. We analyzed the soil and tunnel deformation under various construction conditions by numerical method and quantified the effect of strengthening measure. The results show that the shield tunnel produced a large vertical deformation and a small horizontal displacement during the construction, while grouting can reduce the ground uplift by about 30% and the deformation of the existing tunnel by 50%.
Study on Deformation Regularity and Control Measure of Existing Metro Tunnels Caused by Viaduct Construction
Han, Yuzhen (author) / Zhang, Lei (author) / Nie, Xiaofan (author) / He, Jizhong (author)
22nd COTA International Conference of Transportation Professionals ; 2022 ; Changsha, Hunan Province, China
CICTP 2022 ; 2305-2314
2022-09-08
Conference paper
Electronic Resource
English
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