Bearing Behavior of Cement-soil Pile under the Action of Both Horizontal and Vertical Loads

The bearing characteristics of cement-soil pile were analyzed under the action of both horizontal and vertical loads by FLAC software. The relationship between different loads and maximum horizontal displacement at pile-top, the horizontal displacement along the pile body, settlement at pile-top was obtained. The maximum horizontal displacement at pile-top has a positive linear correlation with the both horizontal load and vertical load. The horizontal ultimate load is decreased with the increasing of vertical load when the pile is broken. The direction of horizontal displacement around a deep range of pile is opposite of the direction of the horizontal load. The concept of the first zero point and the second zero point of the pile horizontal displacement is presented. The settlement at pile-top has a positive linear correlation with vertical load when the horizontal load is small; while the settlement at pile-top has a positive nonlinear correlation with vertical load when the horizontal load is high. Moreover, the differential settlement of pile is aggravated along with the increasing of horizontal displacement because the loading conditions are changed from concentric compression into eccentric compression.