The influence of different pile foundation types on deformation characteristics of foundation

4th International Conference on Energy Equipment Science and Engineering

Li, Bin^1^2^3^4

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

CCCC First Harbor Engineering Company Ltd., Tianjin, China^2

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

Key Laboratory of Port Geotechnical Engineering of Tianjin, Tianjin, China^4

关键词: Adverse effect;    Cast in place pile;    Deformation Characteristics;    Foundation types;    High pressure jet grouting;    Mechanical model;    Retaining structure;    Vacuum preloading;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/242/6/062021/pdf
DOI  :  10.1088/1755-1315/242/6/062021

来源: IOP

【 摘 要 】

The effect of vacuum preloading on the existing road will be cracking. The mechanical model of vacuum preloading treatment in vacuum preloading area is established by FLAC 3D software, and the impact on the expressway under the conditions of high-pressure jet grouting pile and cast-in-place pile plus high-pressure jet grouting pile are simulated respectively. When the retaining structure is a high-pressure jet grouting pile, the impact of vacuum preloading on the expressway is 50m and the maximum settlement is 2.24 cm. When the retaining structure is cast-in-place pile and high-pressure jet grouting pile, the influence range is 45m and the maximum settlement is 2.37 cm. The cast-in-place pile and high-pressure rotary jet grouting pile retaining wall can weaken the adverse effect of vacuum preloading on the expressway.