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Pile-soil interaction and pile-end soil constitutive model and parameter determining method thereof

A constitutive model and model equation technology, which is applied in basic structure engineering, electrical digital data processing, testing of basic structures, etc., and can solve problems such as mechanical characteristics that are difficult to describe continuous softening.

Inactive Publication Date: 2015-09-02
卢里尔
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Problems solved by technology

[0002] With the high development of construction, foundation piles have been widely used, and various types of piles have emerged. However, so far, most of the mechanical models describing pile-soil interaction use ideal elastic-plastic models or piecewise linearization. softening models, these models are difficult to describe the mechanical characteristics of continuous softening

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  • Pile-soil interaction and pile-end soil constitutive model and parameter determining method thereof
  • Pile-soil interaction and pile-end soil constitutive model and parameter determining method thereof
  • Pile-soil interaction and pile-end soil constitutive model and parameter determining method thereof

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Embodiment Construction

[0062] The present invention will be further described below in conjunction with the accompanying drawings.

[0063] 1. Pile-soil interaction mechanism:

[0064] The pile-soil interaction mechanism proposed by the present invention is: in the homogeneous geological materials in all directions, under the action of a certain pile top load, the foundation pile deforms between the pile body and the soil in contact with it, along the pile body: the upper part The shear force and displacement are located in the post-failure zone, the middle is in the peak stress zone (this zone is a curve (that is, the cross-sectional curve of the pile: such as a circle, quadrilateral, etc.)), and the lower part is locally between the proportional ultimate stress and the peak stress. The interval area and the local area are in the proportional limit stress area (such as figure 1 Among them, the pile-soil interaction follows the law in figure (a), the soil stress-strain at the pile tip follows the b...

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Abstract

The invention provides a pile-soil interaction and pile-end soil constitutive model and a parameter determining method thereof, and provides a force method and a displacement method for foundation pile calculation. A pile body constitutive model is the existing linear or elastic-plastic model. With the adoption of the model, the bearing force feature of foundation piles under various geological conditions such as the condition that the bearing force of a pile top is not greatly increased after increasing the pile length in a clay area can be simulated, thus the broken position of a pile body can be determined, the foundation pile design and other features can be optimized, and as a result, the development of the design and construction can be conveniently carried out.

Description

technical field [0001] The present invention relates to the technical field of civil engineering and foundation engineering, in particular to the pile-soil interaction and pile tip soil constitutive model and method for determining model parameters, and in particular to the analysis and design of foundation piles. The process transfer analysis has a guiding effect on the design and construction of lime piles, powder spraying piles, rotary grouting piles, concrete piles, steel piles, hollow piles, etc., and has a wide range of applications. Background technique [0002] With the high development of construction, foundation piles have been widely used, and various types of piles have emerged. However, so far, most of the mechanical models describing pile-soil interaction use ideal elastic-plastic models or piecewise linearization. These models are difficult to describe the mechanical characteristics of continuous softening. Contents of the invention [0003] The purpose of ...

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Application Information

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IPC IPC(8): E02D33/00G06F19/00
Inventor 卢应发刘德富邓友生
Owner 卢里尔
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