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Identification method and void ratio calculation method of effectively connected voids in permeable pavement

A technology of permeable pavement and identification method, applied in the field of computer-readable storage medium and pavement permeability evaluation equipment, can solve problems such as the influence of water permeability, inability to flow freely, and no contribution to water permeability, and achieve the effect of improving the accuracy of evaluation

Inactive Publication Date: 2019-03-22
NANJING COMM INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in fact, not all connected voids have a significant impact on the water permeability of the material. Only one end of some connected voids is connected to the outside world, and the other end is a closed end. Although the external water flow can enter these voids, it cannot flow freely, that is, these voids It has almost no contribution to the water permeability of the material, and it belongs to the invalid connected void. Only the voids with both ends connected to the outside play a decisive role in the water permeability of the permeable pavement material, which belongs to the effectively connected void.

Method used

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  • Identification method and void ratio calculation method of effectively connected voids in permeable pavement
  • Identification method and void ratio calculation method of effectively connected voids in permeable pavement
  • Identification method and void ratio calculation method of effectively connected voids in permeable pavement

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Embodiment 1

[0028] This embodiment provides a method for identifying effectively connected gaps in permeable pavements, such as figure 1 shown. It should be noted that the steps shown in the flowcharts of the accompanying drawings may be implemented in a computer system, such as a set of computer-executable instructions, and that although a logical order is shown in the flowcharts, in some cases, The steps shown or described may be performed in an order different than here. The process includes the following steps:

[0029] Step S10, acquiring several cross-sectional CT scan images of the permeable pavement sample. In this embodiment, the several cross-sectional CT scan images are several slice images generated by one CT scan of the permeable pavement sample.

[0030] Step S20, performing binarization processing on the CT scan image to generate several void binary images of the permeable pavement sample. In this embodiment, the gray value of the gap region in the gap binary map is 0, an...

Embodiment 2

[0044] This embodiment provides a method for calculating the porosity of a permeable pavement, such as Figure 5 shown. It should be noted that the steps shown in the flowcharts of the accompanying drawings may be implemented in a computer system, such as a set of computer-executable instructions, and that although a logical order is shown in the flowcharts, in some cases, The steps shown or described may be performed in an order different than here. The process includes the following steps:

[0045] Step S100, using all or part of the identification method in Embodiment 1 above to identify effectively connected gaps in the permeable pavement sample.

[0046] Step S200, calculating the ratio of the volume of effectively connected voids to the volume of the permeable pavement sample to obtain the porosity of the permeable pavement. In this embodiment, the virtual measurement function of the mimics software can be used to measure the volume of the effectively connected void a...

Embodiment 3

[0049] In this embodiment, a device for identifying effectively connected gaps in a permeable pavement is provided. The device is used to implement the above-mentioned embodiment 1 and its preferred implementation modes, and those that have already been described will not be repeated. As used below, the term "module" may be a combination of software and / or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

[0050] This embodiment provides an identification device for effectively communicating gaps in permeable pavements, such as Figure 6 As shown, it includes: an image acquisition module 10 , an image processing module 20 , a gap marking module 30 and an effectively connected gap identification module 40 .

[0051] Wherein, the image acquisition module 10 is used to obtain...

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Abstract

The invention discloses an identification method and a void ratio calculation method for effectively connecting voids in a permeable pavement, wherein, the identification method for effectively connecting voids in the permeable pavement comprises the following steps: acquiring a plurality of cross-sectional CT scanning images of a permeable pavement sample; The CT scan image is binarized to generate a number of porous binary images of pavement samples. Comparing the voids in two adjacent void binary diagrams in turn, marking the voids with overlapping portions as effective voids in the corresponding void binary diagrams, and deleting unmarked voids; The effective voids in the last binary diagram of voids are used as the effective connecting voids of the permeable pavement. By comparing theadjacent void binary diagrams of the pervious pavement sample in turn, when the voids in the adjacent two void binary diagrams have overlapping parts, the two voids with overlapping parts are connected and belong to the effective voids, which can be marked and reserved to distinguish the effective connected voids from the ineffective connected voids in the pervious pavement.

Description

technical field [0001] The present invention relates to the technical field of road engineering, in particular to a method for identifying effectively connected voids in permeable pavement, a method for calculating the porosity of permeable pavement, a device for identifying effectively connected voids in permeable pavement, a device for calculating the void ratio of permeable pavement, and a road surface Water permeability evaluation device and computer readable storage medium. Background technique [0002] According to the traditional road design theory, the pavement of highways and urban roads has the characteristics of compactness, smoothness, wear resistance, and anti-skid. The surface layer materials are mostly dense asphalt mixture, cement concrete, etc. When the drainage pipe is blocked, the impermeable pavement will cause water accumulation on the road due to insufficient drainage speed. In recent years, the newly applied permeable pavement in my country is a new t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G01N15/08
CPCG01N15/088G06T7/0004G06T2207/10081
Inventor 赵岩荆蒋玲周岚
Owner NANJING COMM INST OF TECH