Abstract
The field static load test method was adopted for two test piles in a project in Zhejiang area of China, analyze the effect of post-grouting technique on super-long cast-in-place bored pile and its internal mechanism. Q-s curves and pile axial force curves were drawn based on test data to show that post-grouting technique played a prominent role in improving bearing capacity of single pile and pile skin friction. In addition, pile skin friction at upper soil layer around super-long pile was fully used, but that at lower soil layer was not. For the design of super-long pile, the compression of pile body should be considered to make the best use of pile skin friction caused by relative displacement between pile and soil.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bruce DA (1986a) Enhancing the performance of large diameter piles by grouting(I). Ground Eng 19(4):9–15
Bruce DA (1986b) Enhancing the performance of large diameter piles by grouting(II). Ground Eng 19(5):11–18
Fleming WGK (1993) The improvement of pile performance by base grouting. Civ Eng 97(2):88–93
Gao Y, Sun D, Zhu Z, Xu Y (2019) Hydro-mechanical behavior of unsaturated soil with different initial densities over a wide suction range. Acta Geotech 14(2):417–428
Kusakabe O, Kakurai M, Ueno K, Kurachi Y (1994) Structural capacity of precast piles with grouted base. J Geotech Eng 120(8):1289–1306
Luo XH (2007) Design principle of foundation engineering. Huazhong University of Science and Technology Press, Wuhan (in Chinese)
Mullins G, Winters D (2006) Predicting end bearing capacity of post-grouted drilled shaft in cohesionless soils. J Geotech Geoenviron Eng 132(4):478–487
Nan Z, Cui ZZ (2014) Research on effect of post grouting at pile tip on bearing behavior of single pile. Rock Soil Mech 35:267–271 (in Chinese)
Poulos HG (1989) Pile behaviour—theory and application. Geotechnique 39(39):365–415
Qi CG, Liu GB, Chen YH, Guo W (2015) Field testing on the bearing characteristics of plastic tube cast-in-place concrete pile with shaft pre-grouting. Yantu Lixue/rock Soil Mech 36(8):2377–2385 (in Chinese)
Youn H, Tonon F (2010) Numerical analysis on post-grouted drilled shafts: a case study at the brazo river bridge, tx. Comput Geotech 37(4):456–465
Acknowledgements
This research was supported by Zhejiang Provincial Natural Science Foundation of China under Grant No. LY21E080007 and No.LGF20E080007.
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Cui, Yl., Qi, Cg., Zheng, Jh. et al. Field test research on post-grouting effect for super-long cast-in-place bored pile in thick soft foundation. Geotech Geol Eng 39, 4833–4842 (2021). https://doi.org/10.1007/s10706-021-01796-x
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10706-021-01796-x