Penetration Of Immersed Tube Piles And Bearing Capacity Study

In recent years, with the production level and the rapid development of science and technology, more and more complex building and high-rise building, the type of pile, the pile foundation form, construction technology and equipment has become the main research object of pile foundation. Sinking pipe pile in the construction of environmental pollution is small, unique technology, heavy pile quality is reliable,high bearing capacity of single pile, etc, caused wide attention and development in our country.The sinking pipe pile is developed on the technology of immersed tube piles of new technology. It overcomes the defect of immersed tube piles in the original, can greatly improve the bearing capacity of pipe piles, have good practical significance,and can bring large economic benefit.In this paper, on the basis of theoretical analysis combined with finite element software ABAQUS for the soil compaction effect, and the numerical simulation of the single pile ultimate bearing capacity. For the application of pile foundation engineering and the further analysis to provide basis for later. This paper mainly do the following work:1. This paper introduces the features of the sinking pipe pile, construction process, construction technology and research significance.2. Systematically summarized the soil compaction mechanism of immersed tube piles and pile stress mechanism.3. To establish the two-dimensional axisymmetric model, effectively solve the theory does not consider the initial geostress field, the constitutive relation, the contact problem, large deformation problems, load problems, etc.So as to fully realize the continuous injection of single pile soil process simulation, and analyzed the different parameters on the influence of soil compaction effect.4. To establish a 3 d model,analyzed the soil compaction effect of different pile diameter,with the simulation results.5、Simulation to calculate the single pile ultimate bearing capacity of immersed tube piles,and analyze soil parameters effect on the bearing capacity of single pile,found that the change of the soil elastic modulus has a great influence on the bearing capacity of single pile.