Pile-side grouting is the main method to enhance the bearing capacity of in-service pile foundation, the formation parameters have complicated influence on the grouting reinforcement effect. For the problem of inadequate bearing capacity of friction piles in service in alluvial river plains, the effect of the parameters of the complex strata of silty clay and fine sand on the bearing capacity of friction piles reinforced by extrusion grouting was investigated by model tests. When the thickness ratio of powdered clay and fine sand stratum changes from 1:3 to 3:1, the proportion of powdered clay in the stratum increases, and the bearing capacity of the pile foundation decreases by about 50∼100 N. The internal friction angle of fine sand is larger with the particle size increase, and the load transfer efficiency is higher, so the effect of pile side compaction grouting reinforcement is more pronounced. Meanwhile, the water content of powdered clay plays a negative role in the impact of pile foundation grouting reinforcement.
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
Tel.: +1 703 830 6300
Fax: +1 703 830 2300 firstname.lastname@example.org
(Corporate matters and books only) IOS Press c/o Accucoms US, Inc.
For North America Sales and Customer Service
West Point Commons
Lansdale PA 19446
Tel.: +1 866 855 8967
Fax: +1 215 660 5042 email@example.com