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

A technology for liquefying the site and covering the clay. It is used in calculations, infrastructure engineering, special data processing applications, etc., and can solve problems such as poor soil reaction force accuracy.

Active Publication Date: 2015-03-25
唐亮 +1
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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

Method used

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

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Embodiment Construction

[0039] The present invention also provides the implementation steps for estimating the load-displacement relationship of bridge pile foundations covered with clay layers in the earthquake process, as follows:

[0040] (1) The pile-soil dynamic interaction force is calculated by adopting the improved differential method for solving the soil reaction force proposed by the present invention;

[0041] (2) Based on the curvature-area method, the solution of the lateral dynamic displacement of the pile is obtained;

[0042] (3) The acceleration time history of the far-field soil layer at different depths from bottom to top is recorded through the soil layer;

[0043] (4) According to the acceleration time history, the sand layer displacement time history at different depths is obtained by double integration;

[0044] (5) For any moment, according to the sand layer displacement at different depths, the sand layer displacement at any depth is represented by quadratic polynomial fitti...

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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...

Claims

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Application Information

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IPC IPC(8): G06F19/00E02D27/12
Inventor 唐亮凌贤长
Owner 唐亮
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