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A platform for research: civil engineering, architecture and urbanism
Study on the Influence of Deep Foundation Pit Excavation on Existing Tunnels
The three-dimensional numerical model of station, tunnel and foundation pit is established by using the formation structure method. Considering the interaction between soil and structure, the dewatering of foundation pit and the spatio-temporal effect of foundation pit excavation, the whole construction process is calculated and analyzed, and the tunnel displacement and the response results of the soil pressure of the segments are obtained. The displacement will be used as the external load in the second stage of subsequent analysis. Based on the parameter sensitivity analysis of the influence of deep pit excavation on adjacent station and tunnel structure, the influence of tunnel distance and buried depth on tunnel deformation is discussed. The results show that the finite element simulation results are basically consistent with the measured results. The maximum horizontal displacement of the tunnel is greater than the maximum vertical displacement. The horizontal displacement of the deep tunnel is slightly greater than that of the shallow tunnel, and the vertical displacement is slightly smaller than that of the shallow tunnel.
Study on the Influence of Deep Foundation Pit Excavation on Existing Tunnels
The three-dimensional numerical model of station, tunnel and foundation pit is established by using the formation structure method. Considering the interaction between soil and structure, the dewatering of foundation pit and the spatio-temporal effect of foundation pit excavation, the whole construction process is calculated and analyzed, and the tunnel displacement and the response results of the soil pressure of the segments are obtained. The displacement will be used as the external load in the second stage of subsequent analysis. Based on the parameter sensitivity analysis of the influence of deep pit excavation on adjacent station and tunnel structure, the influence of tunnel distance and buried depth on tunnel deformation is discussed. The results show that the finite element simulation results are basically consistent with the measured results. The maximum horizontal displacement of the tunnel is greater than the maximum vertical displacement. The horizontal displacement of the deep tunnel is slightly greater than that of the shallow tunnel, and the vertical displacement is slightly smaller than that of the shallow tunnel.
Study on the Influence of Deep Foundation Pit Excavation on Existing Tunnels
Advances in Engineering res
Zhao, Gaofeng (editor) / Satyanaga, Alfrendo (editor) / Ramani, Sujatha Evangelin (editor) / Abdel Raheem, Shehata E. (editor) / Zhai, Yang (author) / Wang, Longyan (author) / Tan, Qingyuan (author) / Wang, Jinchang (author) / Sun, Yazhen (author)
International Symposium on Traffic Transportation and Civil Architecture ; 2024 ; Tianjin, China
2024-09-24
10 pages
Article/Chapter (Book)
Electronic Resource
English
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