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Method for establishing and using temperature coupling model of mixed asphalt pavement structure

A pavement structure and coupling model technology, applied in computer-aided design, design optimization/simulation, calculation, etc., can solve problems such as no specific method

Pending Publication Date: 2020-01-24
SHAANXI RAILWAY INST
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  • Abstract
  • Description
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  • Application Information

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However, no practical method has been found

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  • Method for establishing and using temperature coupling model of mixed asphalt pavement structure
  • Method for establishing and using temperature coupling model of mixed asphalt pavement structure
  • Method for establishing and using temperature coupling model of mixed asphalt pavement structure

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] A method for establishing a temperature coupling model of a mixed asphalt pavement structure in the present invention is specifically: establishing a geometric model of 250mm×200mm×180mm, then performing grid division on the established geometric model and defining the grid density, and the grid division adopts four sides Volume unit meshing, specifically including setting simulation boundary parameters and meshing the simulation area, the established geometric model is a multi-physics simulation model, the lower part of the multi-physics simulation model is a free boundary, surrounded by thermal insulation boundaries , the upper layer is the mixed boundary, and the built multi-physics simulation model is the temperature coupling model of the mixed asphalt pavement structure; among them, the parameters of the simulation boundary are set...

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Abstract

The invention discloses a method for establishing a temperature coupling model of a mixed asphalt pavement structure. The method specifically comprises the following steps: establishing a 250mm * 200mm * 180mm geometric model; then, meshing the established geometric model, and defining the mesh density, wherein the meshing is performed by adopting tetrahedral unit meshing which specifically comprises the steps of setting simulation boundary parameters and mesing a simulation area. The established geometric model is a multi-physical-field simulation model, the lower part of the multi-physical-field simulation model is a free boundary, the periphery of the multi-physical-field simulation model is a thermal insulation boundary, the upper layer of the multi-physical-field simulation model is amixed boundary, and the established multi-physical-field simulation model is a mixed asphalt pavement structure temperature coupling model. The invention further provides a using method of the model.The invention provides a method for analyzing a temperature field of an asphalt pavement. The temperature evolution process of an asphalt mixture pavement structure in a natural environment is explored.

Description

technical field [0001] The invention belongs to the technical field of pavement temperature model building methods, and relates to a method for building a mixed asphalt pavement structure temperature coupling model, and also relates to a method for using the model. Background technique [0002] Asphalt mixture has attracted much attention due to its excellent shock absorption and force performance. As a semi-rigid base material, asphalt mixture has parameters such as compressive strength, bending resistance, splitting strength and modulus that all change with temperature without exception. Whether it is good or bad is directly related to driving safety and service life of the project. Therefore, a large number of scholars have conducted extensive research work on this phenomenon. However, no practical method has been found. Contents of the invention [0003] The object of the present invention is to provide a method for establishing a temperature coupling model of mixed...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/08
Inventor 张巧慧姜小磊万成
Owner SHAANXI RAILWAY INST