New Prestressed Retaining Pile Structure System and Reinforcement Method

A large number of reinforcing bars in the conventional pile anchor support structure system cannot be recycled and become construction waste. Under the background of the carbon peaking and carbon neutrality goals, a new type of prestressed support pile with recyclable main bars was proposed. This new type of support pile was introduced from the aspects of structural structure, material selection, construction process, technical points of recycling main bars, etc. The bearing mode and working mechanism of this new type of pile were deeply studied, and a new reinforcement calculation method was proposed based on the traditional calculation method. The rationality of the formula was analyzed. In order to determine the reasonable value range of the tension control stress, ABAQUS finite element software was used to carry out numerical simulation and analysis, and the bending bearing capacity of this new type of support pile under different working conditions was obtained. Compared with the bending bearing capacity calculated by the new reinforcement method proposed, the research shows that the new reinforcement method is applicable to the situation where the tension control stress does not exceed 300 MPa.