Analytical method for calculating the bearing capacity of injection piles in clayey soil

The paper presents the results of the study into the analytical method for calculating the bearing capacity of injection piles F-d in clayey grounds. The method considers the physical processes occurring underneath the bottom end of the injector whilst pressing-in, as well as around the pile shaft as it becomes expanded under the pressure of the concrete mixture. The method applies to injection and Raymond regulated injection piles installed in clayey soils of various structure. It has been found that for clayey soils of high plasticity, the discrepancy between the calculations of the bearing capacity of injection piles F-d obtained experimentally and using the suggested method, does not exceed 20%-30%.