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Method for Rapidly Generating 3D Random Aggregate Model of Concrete with Pebbles and Crushed Stones

A concrete and aggregate technology, applied in 3D modeling, instrumentation, design optimization/simulation, etc., can solve problems such as long calculation time and difficulty in parallel processing, and achieve short calculation time, realistic shape of aggregate, and low investment low cost effect

Active Publication Date: 2019-07-09
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method puts aggregates one by one, and it is necessary to repeatedly judge the collision problem between irregular particles. The calculation takes a long time and it is difficult to achieve parallel processing.

Method used

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  • Method for Rapidly Generating 3D Random Aggregate Model of Concrete with Pebbles and Crushed Stones
  • Method for Rapidly Generating 3D Random Aggregate Model of Concrete with Pebbles and Crushed Stones
  • Method for Rapidly Generating 3D Random Aggregate Model of Concrete with Pebbles and Crushed Stones

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Embodiment 1

[0034] The purpose of this embodiment is to generate a three-dimensional random aggregate model of concrete with only pebbles, which belongs to a special case of the method of the present invention.

[0035] 1. According to the given aggregate grading and concrete cross-sectional size, the aggregate grading is two grades, the aggregate particle size range is 5~20mm and 20~40mm, and the concrete cross-sectional size is 0.15m×0.15m×0.30m , use the Monte Carlo method to generate a three-dimensional spherical random aggregate model diagram, and finally obtain the coordinates and volume of the center point of each spherical aggregate, see figure 2 , the number of spherical aggregates is 80;

[0036] 2. According to the spherical center coordinates of all aggregates in the spherical random aggregate model diagram, generate a three-dimensional von Lonoi diagram with boundaries, see image 3 ;

[0037] 3. Take the vertices of each polyhedron in the 3D von Loneuyi diagram as the con...

Embodiment 2

[0041] The purpose of this embodiment is to generate a three-dimensional random aggregate model of concrete with only gravel, which belongs to another special case of the method of the present invention.

[0042]1. According to the given aggregate grading and concrete cross-sectional size, the aggregate grading is two grades, the aggregate particle size range is 5~20mm and 20~40mm, and the concrete cross-sectional size is 0.15m×0.15m×0.30m , use the Monte Carlo method to generate a three-dimensional spherical random aggregate model diagram, and finally obtain the coordinates and volume of the center point of each spherical aggregate, see figure 2 , the number of spherical aggregates is 80;

[0043] 2. According to the spherical center coordinates of all aggregates in the spherical random aggregate model diagram, generate a three-dimensional von Lonoi diagram with boundaries, see image 3 ;

[0044] 3. Take the vertices of each polyhedron in the 3D von Loneuyi diagram as the...

Embodiment 3

[0048] The purpose of this embodiment is to generate a concrete three-dimensional random aggregate model mixed with pebbles and crushed stones, which belongs to the conventional situation of the method of the present invention.

[0049] 1. According to the given aggregate grading and concrete cross-sectional size, the aggregate grading is two grades, the aggregate particle size range is 5~20mm and 20~40mm, and the concrete cross-sectional size is 0.15m×0.15m×0.30m , use the Monte Carlo method to generate a three-dimensional spherical random aggregate model diagram, and finally obtain the coordinates and volume of the center point of each spherical aggregate, see figure 2 , the number of spherical aggregates is 80;

[0050] 2. According to the spherical center coordinates of all aggregates in the spherical random aggregate model diagram, generate a three-dimensional von Lonoi diagram with boundaries, see image 3 ;

[0051] 3. Take the vertices of each polyhedron in the 3D v...

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Abstract

The invention discloses a method for rapidly generating a grait and gravel mixed concrete three-dimensional random aggregate model. A concrete three-dimensional random aggregate model only with grait or gravel is the special circumstance of the grait and gravel mixed concrete three-dimensional random aggregate model. The method comprises the steps that a spherical random aggregate model and a three-dimensional Voronoi diagram with the boundary are combined, and the sphere center of the spherical aggregate is adopted as a control point to generate the three-dimensional Voronoi diagram similarly meeting the aggregate gradation; the peak of each Voronoi diagram is adopted as a control point, a closed spline generated by adopting a subdivision mesh method to represent the shape of the grait aggregate, points are sampled randomly and uniformly on the closed spline curve, and therefore the convex polyhedron is generated to represent the shape of the gravel aggregate. By adopting the parallel mode, volume zooming is performed on each polyhedron aggregate in the three-dimensional Voronoi diagram, and the grait and gravel freely mixed concrete three-dimensional random aggregate model meeting the given gradation is rapidly generated.

Description

technical field [0001] The invention relates to a method for quickly generating a three-dimensional random aggregate model of concrete mixed with pebbles and crushed stones, in particular to two special three-dimensional random aggregate models of concrete with only pebbles or only crushed stones and a three-dimensional concrete model with random mixes of pebbles and gravels Random aggregate model. Background technique [0002] Concrete is a heterogeneous composite material composed of aggregate and cement mortar, in which the shape and spatial distribution of aggregate have a great influence on the performance of the material. With the continuous development of computer technology and the continuous maturity of related numerical calculation technology, the concrete random aggregate model, which considers the internal mesoscopic structure of concrete aggregate shape, gradation and mortar interface, has begun to be used to study the mesoscopic structure of materials. Destruc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/00
CPCG06F30/23G06T17/00
Inventor 余敏叶建乔鲍浩池寅徐礼华
Owner WUHAN UNIV
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