Load-displacement relation estimation new method of liquefaction field bridge pile foundation covered with clay bed in earthquake process

Abstract

The invention provides a new method for establishing the liquefaction field pile covered with a clay bed-soil dynamic interaction load-displacement to overcome the defect that the soil reaction force solving precision is poor in the process of establishing the dynamic load-displacement, effectively obtain the relativity displacement y of pile soil and ensure the correctness of the liquefaction field pile covered with the clay bed-soil dynamic interaction load-displacement. The new method for establishing the liquefaction field pile covered with the clay bed-soil dynamic interaction load-displacement relates to the technological approach for solving the pile-soil dynamic interaction load-displacement in the field of geotechnical engineering and mainly relates to the five parts of content of the dynamic load-displacement establishing basic theory, the soil layer boundary pile bending moment interpolating function processing method, the pile-soil dynamic interaction force calculating, the pile lateral dynamic displacement solving and the pile soil relative dynamic displacement determining.

Description

technical field [0001] The invention relates to a new method for estimating the load-displacement relationship of a bridge pile foundation on a liquefied site covered with a clay layer during an earthquake in the field of geotechnical earthquake engineering. Background technique [0002] Usually, it is difficult to directly and accurately measure the time history of earth pressure on piles during earthquakes. It is necessary to convert the strain of the measured pile into bending moment, and use the interpolation function to represent the discrete bending moment value distributed on the pile, and then according to the relationship between the bending moment and deflection of the pile, through the double integration of the bending moment of the pile along the buried depth and Combined with the pile displacement boundary conditions, the lateral displacement y of the pile is calculated, and the soil reaction force p on the pile is solved by double differentiation of the bending...

AI Technical Summary

Problems solved by technology

It can solve the defect of poor accuracy in solving the soil reaction force in the process of establishing pile-soil seismic interaction load-displacement, and can also effectively obtain the relative displacement y of pile-soil to ensure the pile-soil dynamics of the liquefied site covering the clay layer. Correctness of Interaction Load-Displacement Curve

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