Analytical solution of grouting fracturing height for the post-grouted bored piles using the Herschel–Bulkley model with time-varying viscosity

Autor: Jing Cao, Gan Nan, Rui Liang, Hong-tao Xie, Hai-ming Liu, Yong-mei Peng
Rok vydání: 2021
Předmět:
Zdroj: Arabian Journal of Geosciences. 14
ISSN: 1866-7538
1866-7511
DOI: 10.1007/s12517-021-08456-7
Popis: According to the cylindrical cavity expansion theory, the equation calculating the lateral displacement of soil along the pile shaft is obtained. Combined with the Herschel–Bulkley model with time-varying viscosity and the uniform flow equation, the analytical solution of the grouting fracturing height (GFH) for the post-grouted at the pile tip and considering the time-varying viscosity is derived under certain assumptions. For the problem of post grouting in the layered soil, the iterative calculation method of the GFH is given. The influence of the grouting pressure, pile length, pile radius, thickness of mud skin, rheological index, initial consistency coefficient, time-varying coefficient, and grouting time for grouting on the GFH is analyzed with examples. Finally, the problems of time-varying viscosity and grouting pressure loss are discussed.
Databáze: OpenAIRE
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