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A cyclic hyperbolic elastic-plastic soil constitutive model and its application method

An application method and constitutive model technology, applied in the field of geotechnical engineering, can solve the problems of cycle characteristics and hysteresis curves that cannot be well reflected, and achieve the effect of easy access to parameters

Active Publication Date: 2019-04-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing constitutive models such as the Cambridge model and the modified Cambridge model can only reflect the mechanical properties of the soil under static loads. Linear characteristics, cyclic characteristics and hysteresis curves are not well reflected

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  • A cyclic hyperbolic elastic-plastic soil constitutive model and its application method
  • A cyclic hyperbolic elastic-plastic soil constitutive model and its application method
  • A cyclic hyperbolic elastic-plastic soil constitutive model and its application method

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Embodiment Construction

[0054] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0055] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0056] As introduced in the background technology, there are deficiencies in the prior art. In order to solve th...

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Abstract

The invention discloses a circular dual-curve elastic-plastic soil-mass constitutive model and an application method thereof. The model solves the problems that only mechanical characteristics of soilmass under the action of static loads can be reflected in existing constitutive models, and mechanical characteristics of the soil mass under the action of dynamic cyclic loads cannot be reflected; the model has the advantages of being capable of reasonably reflecting non-linear characteristics and circular characteristics of the soil mass under the action of the dynamic cyclic loads. According to the scheme, by means of the circular dual-curve elastic-plastic soil-mass constitutive model, the yield surface of the soil mass is defined by a Moore Kulun model, and a dual-curve elastic model isadopted by elastic segments below the yield surface for describing the strain condition of stress of the soil mass.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a cyclic hyperbolic elastic-plastic soil constitutive model under the action of dynamic cyclic load and an application method thereof. Background technique [0002] Rock and soil is a complex material, under the action of external force, it often has very complex stress-strain characteristics, such as nonlinearity, elasticity, plasticity, viscosity, dilatancy, strain hardening (softening), anisotropy, etc. It is affected to varying degrees by stress paths, stress levels, stress history, and the state, composition, structure, and temperature of the rock and soil. In order to describe the deformation and mechanical characteristics of the soil more accurately, reflect the real mechanical properties of the soil, and establish the relationship between the stress-strain-time of the soil, it is necessary to propose a certain mathematical model on the basis of the test. The exper...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/06
Inventor 韩勃崔晓琳刘健解全一张晓
Owner SHANDONG UNIV