Tip bearing capacity estimation method, tip bearing capacity management system, construction management method, and program for rotary press-fit piles

摘要

This method of estimating the tip bearing capacity of a rotary press-fit pile is the tip of a rotary press-fit pile that estimates the tip bearing capacity of the rotary press-fit pile when a rotary press-fit pile made of a steel pipe pile with the pile tip released is rotationally press-fitted into the ground. It is a bearing capacity estimation method, in which a step of inputting a pressure input Qin and a bearing capacity estimation index H measured at the time of construction, and the rotation using the pressure input Qin and the bearing capacity estimation index H. The tip of the rotary press-fit pile is based on the tip bearing capacity estimation formula represented by equation (1) formulated from the correlation between the press-in input Qin in the press-fit pile, the tip bearing capacity Ru, and the bearing capacity estimation index H. It has an estimation step of estimating the bearing capacity Ru. [Equation 1] Gradient B: X when the approximate line of the plot points of the test results with the X-axis as the natural logarithmic of the bearing capacity estimation index H and the Y-axis as Qin / Ru is expressed by Eq. (2). The Y-intercept [Equation 2] when the approximate line of the plot points of the test results with the axis as the natural logarithmic of the bearing capacity estimation index H and the Y-axis as Qin / Ru is expressed by Eq. (2).