Study on the influence of support structure on vacuum preloading

2017 2nd International Seminar on Advances in Materials Science and Engineering

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, Tianjin, China^2

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

关键词: Cast in place pile;    FLAC3D software;    High pressure jet grouting;    Mechanical model;    Support structures;    Supporting structure;    Tension fractures;    Vacuum preloading;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/231/1/012074/pdf
DOI  :  10.1088/1757-899X/231/1/012074

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 one is the cast-in-place and the high pressure jet grouting pile. In the first supporting structure, the influential area of vacuum preloading on the expressway is 45 meters and the largest settlement is 2.37 centimeters. Obviously, the cast-in-place pile and the high pressure jet grouting pile can weaken the influence of vacuum preloading on the expressway obviously more.