Bearing Capacity of Deep Pile Foundation for High-rise Facility on Weak Soils: Comparing of Analysis Results and Experimental Data

The results of static testing of the pile and comparative results of analytical and numerical calculations for the experimental deep pile (length 65 m, diameter 1.2 m) under the high-rise building, designed in the area of a large thickness of weak soils, are presented in the paper. At the same construction site, an experimental barrette pile of rectangular crosssection with a size of 3.3 x 1.1 and a length of 65 m with the location of the base in solid Proterozoic clays was made. This pile was tested with the use of Osterberg cells, for which strain gauges were mounted in its reinforcement cage at 9 levels. In the first stage, a standard test of the entire experimental barrette pile in the top-down direction was conducted; in the second, after reaching the maximum possible load, the tests were carried out using the “O-cells” located at a depth of 50 m in the thickness of solid clays and transmitting the load in two directions (up and down). A General assessment of the bearing capacity of the barrette pile obtained by three methods is given.