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Method for obtaining response modulus of granular material layer structure

A technology of structural response and layer structure, applied in special data processing applications, constraint-based CAD, instruments, etc., can solve problems such as hindering the popularization and application of granular materials, and achieve the effect of small error, easy control, and promotion of application.

Active Publication Date: 2021-01-05
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

At present, there is no method with strong applicability and high accuracy to obtain the linear response modulus of the granular layer, which hinders the popularization and application of granular materials in road engineering.

Method used

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  • Method for obtaining response modulus of granular material layer structure
  • Method for obtaining response modulus of granular material layer structure
  • Method for obtaining response modulus of granular material layer structure

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described in detail below. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0018] An embodiment of the method for obtaining the response modulus of the granular material layer structure of the present invention is carried out through the following steps:

[0019] 1) Select the control structure response. Structural response refers to the stress, strain and deformation of the pavement structure layer under load. The control structure response refers to the structural response characteristics selected from the granular material layer in the road structure and the structural response characteristics of the upper and lower structural layers to control the mechanical characteristics and stress stability of the granular material layer in the road structure.

[0020] 2) Calculate the n...

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Abstract

The invention discloses a method for obtaining a response modulus of a granular material layer structure. The method comprises the following steps: 1) selecting a control structure response; 2) calculating a nonlinear structure response value of the control structure response; 3) setting an initial linear response modulus; 4) calculating a linear structure response value of the control structure response, and adjusting a linear response modulus through an iterative inversion algorithm to enable the linear structure response value to converge to a nonlinear structure response value; and 5) terminating iteration when the error between the linear structure response value and the nonlinear structure response value is smaller than a set value, wherein the linear response modulus at the moment is the aggregate layer structure response modulus. According to the method disclosed by the invention, the relatively accurate linear response modulus of the granular material layer structure responsecan be obtained, so that the structure response characteristics of the granular material layer can be quickly and accurately obtained.

Description

technical field [0001] The invention relates to civil engineering mechanical properties, in particular to a method for obtaining the response modulus of a granular material layer structure. Background technique [0002] Aggregate is a common building material in civil engineering, and is widely used in road bases, cushions, etc. In the design process of pavement structure, it is necessary to obtain accurate response characteristics of the granular material layer structure, so that the pavement structure can meet the requirements of service function and service life. The structural response characteristics of the granular material layer are stress-dependent, that is to say, the structural response characteristics of the granular material change with the change of the stress level, and the structural response characteristics of the granular material layer are a kind of nonlinear structural response characteristics. For this purpose, the nonlinear structural response character...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/23G06F111/04G06F119/14
CPCG06F30/13G06F30/23G06F2111/04G06F2119/14
Inventor 黄优刘朝晖柳力李文博杨程程
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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