Reverse three-dimensional reconstruction and solid modeling method of pavement material skeleton structure

A skeleton structure and three-dimensional reconstruction technology, applied in 3D modeling, additive processing, image data processing, etc., can solve the problems of inability to describe the three-dimensional spatial information of the skeleton structure, limited size, and high cost of use, achieving significant academic innovation , Improve the authenticity and ensure the effect of accuracy

Active Publication Date: 2018-01-30
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

Among them, the two-dimensional digital image processing uses the sliced ​​image of the asphalt mixture specimen to obtain the mesoscopic structure information of the skeleton, combined with finite element, discrete element and other methods to numerically analyze the mesoscopic mechanical behavior of the aggregate skeleton, but the two The three-dimensional digital image processing technology cannot describe the three-dimensional spatial information of the skeleton structure, so it has limitations; with the development of X-ray CT non-destructive testing technology, computer tomography three-dimensional reconstruction technology has been introduced into the research field of asphalt mixture mesos

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  • Reverse three-dimensional reconstruction and solid modeling method of pavement material skeleton structure
  • Reverse three-dimensional reconstruction and solid modeling method of pavement material skeleton structure
  • Reverse three-dimensional reconstruction and solid modeling method of pavement material skeleton structure

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Example Embodiment

[0033] Embodiment 1: as Figure 1-4 As shown, a reverse three-dimensional reconstruction and solid modeling method of the skeleton structure of pavement materials. This test uses asphalt mixture to prepare AC-16C asphalt mixture. The selected gradation is shown in Table 1:

[0034] Table 1

[0035]

[0036] According to the passing rate of 1 to 3 grades, the aggregates are screened out for mixture blending, the oil-stone ratio is 5.5%, and the mineral powder is 3% inside. Aggregate: limestone;

[0037] The selected coarse aggregate is the aggregate with a sieve hole of 2.36mm or more, and then proceed to the following steps:

[0038] A. Three-dimensional scanning of the test aggregate; use a non-contact three-dimensional laser scanner to scan the test coarse aggregate particles to obtain a high-density point cloud reflecting the surface feature information of the aggregate; use the reverse engineering software Imageware to analyze the three-dimensional point cloud data Fo...

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Abstract

The present invention relates to a reverse three-dimensional reconstruction and solid modeling method of a pavement material skeleton structure, and belongs to the technical field of construction engineering. The method comprises the following steps: three-dimensional scanning of experimental aggregates; 3D printing of experimental aggregates; installation of miniature wireless micro inertial sensors; preparation of the mixture containing the 3D printed aggregates; establishment of a point cloud coordinate system; conversion and reconstruction of the point cloud coordinate system; three-dimensional solid reconstruction modeling; and numerical simulation analysis. According to the method provided by the present invention, the actual situation of the mixture can be more accurately simulated,the influence of the mixture gradation on the mixture skeleton structure can be effectively studied, and a new method for evaluating whether the coarse aggregates form a stable skeleton structure isprovided.

Description

technical field [0001] The invention relates to a reverse three-dimensional reconstruction and solid modeling method of a pavement material skeleton structure, belonging to the technical field of construction engineering. Background technique [0002] In the early studies, in order to solve specific engineering problems, researchers mostly started from a macro perspective and used empirical indicators to determine whether the coarse aggregate formed a skeleton. However, engineering practice shows that the macroscopic mechanical properties of asphalt mixture are affected by its microscopic structural characteristics. Therefore, it is impossible to accurately determine whether the coarse aggregate forms a stable skeleton structure by using the average statistical index of performance on the macro scale. In recent years, with the development of computer and test analysis technology, researchers have carried out a lot of research work on the mesoscopic structural characteristic...

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Application Information

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IPC IPC(8): G06F17/50G06T17/00B29C64/386B33Y50/00B29K95/00
Inventor 李洛克保亮赵成俊张龙飞李晓琴
Owner KUNMING UNIV OF SCI & TECH
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