CALCULATION OF PYRAMID PILES FOR HORIZONTAL LOAD AND BENDING MOMENT ACCORDING TO THE ACTION OF VERTICAL LOAD
The results of experimental and theoretical studies of the features of the work of a stuffed pyramidal pile on a horizontal load are presented. On an experimental site composed of clay soils, 2 experimental piles were made and static tests were performed for the combined action of vertical, horizontal and moment loads. Based on the test results, it was found that the presence of a vertical load increases the resistance of a pyramidal pile to a horizontal load. Based on the analysis of the test results, a design scheme of a horizontally loaded pyramidal pile in a multilayer Winkler foundation was constructed, taking into account friction on the side faces. The bending rigidity of the pile shaft is assumed to be infinitely rigid. In accordance with the design scheme, an analytical method for calculating a pyramidal pile loaded with vertical and moment loads has been developed, taking into account the increase in bearing capacity under the action of a vertical load. Based on the results of the calculation, the horizontal displacement of the pile head in the level of the soil surface, the angle of rotation of the pile, as well as bending moments and transverse force along the length of the pile are determined. An example of calculating a pyramidal pile for a horizontal load with and without friction on the side surface of the pile is presented.