The influence of vacuum preloading to existing road

2nd International Conference on Materials Science, Energy Technology and Environmental Engineering

材料科学;能源学;生态环境科学

Li, Bin^1,2,3

Tianjin Port Engineering Institute Ltd., CCCC First Harbor Engineering Company Ltd., Tianjin, China^1

Key Laboratory of Port Geotechnical Engineering, Ministry of Communications, PRC.Tianjin, China^2

Key Laboratory of Port Geotechnical Engineering of Tianjin, Tianjin, China^3

关键词: FLAC3D software;    High pressure jet grouting;    In-vacuum;    Mechanical model;    Supporting structure;    Tension fractures;    Vacuum preloading;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/81/1/012174/pdf
DOI  :  10.1088/1755-1315/81/1/012174

来源: IOP

【 摘 要 】

The vacuum preloading will produce an effect of tension fracture on existing road. We have established the mechanical model of vacuum preloading in vacuum preloading zone by using FLAC3D software and analyze the influence of the supporting structure, which is the high pressure jet grouting pile. The influential area of vacuum preloading with the high pressure jet grouting pile of the expressway is 20 meters and the largest settlement is 2.24 centimeters. Obviously, the high pressure jet grouting pile can weaken the influence of vacuum preloading on the expressway obviously more.