Analytical Analysis and Practice of Two-segment Variable Diameter Pile
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Abstract
The internal force and displacement of piles under horizontal load are calculated, and the m method is recommended for the design of pile foundation. The disadvantage of m method is that the stiffness of the soil is very far from the assumption that the soil is replaced by the soil in the region near the cap when the horizontal bearing capacity of the piles is significantly increased. In this paper, 2K method is used to analyze the internal force and deformation of piles under horizontal load, and the two lateral spring stiffness of the soil. The application of 2K method in engineering is widely: the pile foundation near the soil for filling or reinforcement, the larger diameter of the pile body, the upper part of the pile body is set to increase, the pile foundation displacement will be reduced, and the pile's bearing capacity can be improved, and the internal force of pile can be calculated, It can be more accurate to consider its effect on the pile top, the horizontal bearing capacity of piles, the pile bending moment of the pile top, the bending moment of piles, the pile bending moment, the pile body bending moment, the pile body bending moment, and the pile foundation design. If the pile is built into the calculation model, the four stiffness parameters can be obtained by this method, and it can save the large degree of freedom of the pile modeling and its internal unit. The model is more easy to maintain, and this is an important milestone in the development of integrated modeling.
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