Meso analysis method for total cross section of bituminous pavement
A technology of asphalt pavement and analysis method, applied in the field of civil engineering, to achieve the effect of high mechanical response accuracy and strong pertinence
Inactive Publication Date: 2017-11-28
WUHAN UNIV OF TECH
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In the current technology, there is no mesoscale model of the whole structural layer of asphalt pavement based on the real cross-sectional information of asphalt pavement
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[0027] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.
[0028] please see figure 1 , a kind of asphalt pavement full-section mesoscopic analysis method provided by the invention comprises the following steps:
[0029] Step 1: Analyze the 3D macroscopic finite element model of the asphalt pavement;
[0030] A typical semi-rigid base asphalt pavement structure is selected as the research object, and the parameters of the selected asphalt pavement structure are shown in Table 1. The wheel load adopts the standard axle load BZZ-100, and the single wheel load is simplified to a rectangle of 18.9×18.9cm, the distance ...
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The invention discloses a meso analysis method for a total cross section of a bituminous pavement. The method comprises the steps of extracting a cross section image of each structure layer of the bituminous pavement, and processing the cross section image of each structure layer of the bituminous pavement into a binarized vector graph; then importing the vector graph into finite element software ANSYS to build a two-dimensional meso finite element sub-model of each structure layer of the bituminous pavement; and transmitting a boundary condition of a bituminous pavement model under a macro-scale to the bituminous pavement model under a meso-scale through a cut boundary displacement method, and performing meso-scale analysis of the total cross section of the bituminous pavement. Based on finite element analysis of a core sample of the bituminous pavement, cross-scale analysis of the pavement from a three-dimensional macro finite element model to the two-dimensional meso finite element sub-model of the total cross section is finished; a mechanical response of the bituminous pavement model under the macro-scale is transmitted to the bituminous pavement model under the meso-scale through the cut boundary displacement, so that the meso-scale effect of a pavement structure can be better explained; and the bituminous pavement structure and the material combination design are optimized.
Description
technical field [0001] The invention belongs to the technical field of civil engineering, and relates to a method for mesoscopic analysis of the full section of asphalt pavement, in particular to a method based on finite element theory and its application, digital image processing technology and multi-scale method to further study the structure of asphalt pavement at the mesoscopic scale Modeling method for full-section mesoscopic analysis of asphalt pavements with material failure mechanisms as the target. Background technique [0002] The current asphalt pavement design only gives pavement design parameters and design indicators based on the macro scale, but in fact the mechanical behavior of the asphalt pavement structure is irregular and uncertain, and the macroscopic mechanical parameters of the asphalt pavement material are essentially just the result of a large number of discrete data. Statistical average. Under the action of traffic load, the asphalt pavement is mos...
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IPC IPC(8): G06F17/50E01C23/01
CPCE01C23/01G06F30/23
Inventor 付军赖泽涵杨炎卿谢逸超李婷马晓冬刘智鸿雷力
Owner WUHAN UNIV OF TECH