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Method for analyzing horizontal dynamic response of single pile in layered soil based on Pasternak foundation model

A technology of horizontal dynamics and foundation models, applied in instrumentation, geometric CAD, design optimization/simulation, etc., can solve problems such as failure to reflect soil continuity, ignoring shear effects, and calculation results that are not rigorous enough in theory

Active Publication Date: 2020-06-19
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

The Winkler foundation model ignores the shear effect of the soil and cannot reflect the continuity of the soil between layers in the vertical direction, making the calculation results not rigorous enough in theory

Method used

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  • Method for analyzing horizontal dynamic response of single pile in layered soil based on Pasternak foundation model
  • Method for analyzing horizontal dynamic response of single pile in layered soil based on Pasternak foundation model
  • Method for analyzing horizontal dynamic response of single pile in layered soil based on Pasternak foundation model

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Embodiment Construction

[0079] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0080] It should be noted that, in the following specific embodiments, when describing the embodiments of the present invention in detail, in order to clearly show the structure of the present invention for the convenience of description, the structures in the drawings are not drawn according to the general scale, and are drawn Partial magnification, deformation and simplification are included, therefore, it should be avoided to be interpreted as a limitation of the present invention.

[0081] Such as figure 1 A kind of single pile horizontal dynamic response analysis method based on Pasternak foundation model layered soil shown in -2 is characterized in that, comprises the following steps:

[0082] S1: Introduce the following assumptions to establish a horizontal dynamic response model of a single pile in layered soil: the depth o...

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Abstract

The invention discloses a method for analyzing horizontal dynamic response of a single pile in layered soil based on a Pasternak foundation model. A layered Pasternak foundation model is adopted to simulate the shearing effect of a soil body around a pile, a segmented Timoshenko beam model is adopted to simulate the pile body so as to consider bending and shearing deformation of the pile body, meanwhile, it is assumed that a pile-soil model meets the small deformation condition, a pile-soil interface is in complete contact and free of relative sliding, and the pile bottom is a fixed end constraint. According to the invention, on the basis of the assumption; firstly, a horizontal dynamic balance equation of segmented pile body units is established; secondly, establishing a relationship among a pile body corner, a bending moment, a shearing force and a pile body horizontal displacement, establishing a coefficient matrix equation set of a segmented pile body unit according to the continuity of the horizontal displacement, the bending moment, the bending moment and the shearing force of the pile, and finally obtaining the horizontal displacement of each segment of the pile body and thebending moment and the shearing force on any section of the pile body according to boundary conditions. The method can provide theoretical guidance and reference for pile foundation power detection.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a method for analyzing the horizontal dynamic response of a single pile in layered soil based on a Pasternak foundation model. Background technique [0002] At present, when solving the dynamic response problem of pile horizontal vibration, for the convenience of calculation, the soil around the pile is generally simplified to the Winkler model. The Winkler foundation model ignores the shear effect of the soil and cannot reflect the continuity of the soil between layers in the vertical direction, making the calculation results not rigorous enough in theory. Based on the Winkler model, the two-parameter foundation model considers the shear effect of the foundation soil, which is more realistic. At this time, it is more appropriate to use the Pasternak foundation model. [0003] In addition, when solving the dynamic response problem of pile horizontal vibration, the classic Berno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/20G06F119/14
CPCY02E60/00
Inventor 崔春义辛宇梁志孟孟坤王本龙刘海龙张鹏赵九野
Owner DALIAN MARITIME UNIVERSITY
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