Numerical analysis of the influence of soft ground improvement by surcharge preloading method on the underground pipe gallery

4th International Conference on Energy Equipment Science and Engineering

Li, J.S.^1^2^3^4 ; Kou, X.Q.^1^2^3^4

CCCC Tianjin Port Engineering Institute Co. Ltd., Tianjin

300222, China^1

CCCC First Harbor Engineering Co. Ltd., Tianjin

300461, China^2

Key Laboratory of Port Geotechnical Engineering, Ministry of Communications of PRC, Tianjin

300222, China^3

Key Laboratory of Port Geotechnical Engineering of Tianjin, Tianjin

300222, China^4

关键词: Drainage channels;    Lateral displacements;    Pore-water pressures;    Soft ground improvement;    Surcharge preloading;    Torsion angle;    Underground pipes;    Vertical displacements;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/242/6/062008/pdf
DOI  :  10.1088/1755-1315/242/6/062008

来源: IOP

【 摘 要 】

The numerical modelling method was used to analyse the influence of surcharging on underground pipe gallery. By simulating the 200-d surcharging process to observe the settlement, lateral displacement and dissipation of porewater pressure in the preloading area, it is found that the vertical displacement of pipe gallery under the influence of the surcharging near the drainage channel is not more than 10 mm, the lateral displacement is not more than 2.4 cm, and the torsion angle of the pipe gallery is not more than 0.18 degree. Therefore, it can be considered that the surcharging has little influence on the adjacent underground pipe gallery.