Analyzing To The Vertical Bearing Behavior Of Large Diameter Rock-socketed Pile Under Pressure And Studying To Its Influencing Factor

For the complexity of pile, rock and soil system, Behavior of rock-socketed piles is different from common piles. It is difficulty for normal calculation ways to express the behavior of rock-socketed piles that rock and soil around piles are not at all the same. It can be better simulating and analyzing with the finite element method, and many researchers had spent lots of time on the work, However, for rock-socketed piles, how to set up the models, contact element and control calculation are still problems need to be further studied. In this paper, based on the common software Ansys, the method how to set up the contact element that between the pile and the rock for better simulating behavior of rock-socketed piles are studied. The visual software was written, which based on the improved elastic theoretic method and can be used to computing and plotting. On these premise, Calculation results of Ansys and the improved elastic theoretic method were compared with actually surveyed. It is shown that finite element modeling and calculating method in the papers can be used to better analyzing bearing behavior of rock-socketed piles. Finally, with this modeling and calculating method, influencing factors such as rate of piles length and diameter, the depth of rock-socketed, intensity of soils around piles, intensity of rock, intensity of pile, flaccidity layers and the depth of sediment at the end of pile were studied in detail.