An investigation of the behavior of a spiral micropile in soil

The study of a new micropile construction are presented. The proposed vertical micropiles have a large surface area due to their spiral shape and a larger bearing capacity compared to the typical micropiles. Numerical modeling shows the influence of the number of spiral turns, the relative elongation of the spiral turns on the change in load capacity, and the features of its compressibility. Numerical modeling also shows the area of the effective constructive combinations of the number of spiral turns along the length of the pile and the widening of the turns. This area has the largest load capacity of the spiral pile compared to typical micropiles. Additionally, restrictions on compressibility have been imposed to confine torsional tensions. The authors also formulate problems for further research.