Pile Load Transfer Mechanism Of The Pilot Study And Mechanism Analysis

In the practice of pile foundation, most pile can endure the vertical load. It shows that under the vertical load interaction between pile and soil is very complex. Now it is not certain of load transferring and settlement mechanics. Regarding the problem there are two ways: one is site load test. The other is numerical method on the basis of elastic theory. Owing to uncertain of later method for math simulation, it can not calculate the stress and displacement of it. So it is very important to study working properties of pile foundation at the same time of calculation.In this thesis, the research work focus on the entire process of load transfer , pile friction, pile-soil load ration, pile settlement。 The study idea and method is: according to in-situ experiments and long-term observations it reveal the transmitting of the load and possible sedimentation, and the difference between the operating characteristic of a single pile and that of pile group2.According to the results of experiment, we got the some computational parameter. It can give solid foundation to the following three-dimensional finite element computation. the difference between the operating characteristic of a single pile and that of pile group2. Long-term observation was done on the distribution of the stress , pile-soil load ration and settlement. Base on the long-term observation, we have a research on the behaviors of pile group under the load, the load-settlement's mechanism of small bridge pile cap are explored.