Behavior in Different Soils
When comparing the contribution of the shaft and the bearing plates to the axial compressive resistance in clays, the shaft of the helical pile tends to contribute more to load with increasingly stiff clays. The bearing plates carry most of the load, and their contributions increase in proportion as the pile approaches its ultimate axial capacity (Elsherbiny and El Naggar 2013). When comparing the contribution of the shaft and the bearing plates to the axial compressive resistance in sands, the shaft of the helical pile tends to contribute more to...