Abstract
The authors had presented the results of model test for bearing capacity of nodular cylinder pile as compared with non-nodular cylinder pile. This time, we performed a full-scale test to verify results of the model test. In a full-scale test, a nodular pile and two non-nodular piles (φ300, φ450) were penetrated with a hydraulic jack into compacted sand in a large scale soil bin (6m×4m×5m). This paper discribes the results of the test. Additionally, the measured shaft capacity of nodular pile is discussed using the following three data ; 1) the experimental equation based on previous model test, 2) data of shear tests between sand and gravel, 3) data of friction tests on sand/concrete and gravel/concrete interfaces. The conclusions are summarized as follows. (1) The point bearing capacity of a nodular pile is about 70 percent of the point capacity of a non-nodular pile. This result is consistent with the model test reported in a previous paper. (2) The shaft capacity of nodular pile is about 5 times as that of a non-nodular pile. (3) The mechanism of frictional resistance of nodular pile in this test is also similar to that in the model test. (4) It is ascertained that the experimental equation for shaft capacity based on the model test is to be applied to the full-scale nodular pile, as far as it is considered that the density of soil around pile is increased by penetration of pile.
