Study On The Bearing Mechanism And The Detection Technologies Of Large-Diameter Bored Pile

As the bearing mechanism of the large-diameter bored pile is complexity, the method of how to determine the bearing capacity of this pile is uniform, meanwhile, the study of the bearing mechanism is still not perfect, and the experimental results are also quite different from the theoretical values. Therefore, it is very important to combine the field engineering test with finite element numerical simulation to make further analysis of this pile.Firstly, this paper introduces the development overview about pile foundation, reviews the development and application of large-diameter bored pile at home and abroad, generalizes its detection technologies and adaptability. Secondly, it makes a instruction about the bearing capacity calculation and bearing mechanism.Thirdly, combining the concrete engineering about relocation project of xin’an town, it takes the field static load test and core drilling test. Meanwhile, in order.to learn more about the working mechanism of this pile, this paper combines with practical engineering and theoretical analysis method to analysis and discuss about the bearing mechanism and related factors. And it comes to the conclusion that the bearing capacity and integrity of the piles tested meet the design requirements.Finally, this paper makes a numerical simulation about the bearing mechanism of the large-diameter bored pile by the means of finite element. And we find that the analog results of vertical bearing capacity of single pile are in good agreement with the results of the field static load test. And the paper makes a further discussion about the vertical bearing mechanism of this pile. It can provide certain reference and theoretical basis for the application and researching of this pile in similar engineering.