Study On The Vertical Compressive Bearing Capacity Of Static Drill Rooted Nodular Piles

As a kind of effective way to provide vertical support for constructions, pile has been developed to many different kinds of styles. The static drill rooted nodular pile is a new one of the numerous styles. By comparing the experimental data of the new pile with the bored pile, we can conclude that the bearing performance of the new pile is no worse than the bored pile. In order to make the new type of pile work in the best way, we need to carry out systematic study on it.1. After sorting of the experimental data, a comparison between different nodular piles with different sizes is made to reveal the regular pattern of their supporting ability, and a comparison between the nodular pile and the bored pile is made to demonstrate that the nodular pile is good in providing support.2. The finite-element software, ABAQUS, is adopted for analysis. The difference between the numerical simulation result and the site measurement is very tiny, which indicates that ABAQUS simulation is reliable in simulating the working process of the nodular pile. According to the displacement developing and stress distribution in the simulation, the load-transfer mechanism and destructive modes of nodular pile are revealed.3. Models with different sizes and different parameters are simulated. The simulating results indicate that the cemented soil’s thickness and the nature soil’s modulus have an obvious effect on the supporting characteristics of the nodular pile, while the distance between the knots and the cemented soil’s modulus makes tiny differences.