CN108871297A - Bridge structure size detecting method and system based on 3-D scanning technology - Google Patents
Bridge structure size detecting method and system based on 3-D scanning technology Download PDFInfo
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- CN108871297A CN108871297A CN201810943321.3A CN201810943321A CN108871297A CN 108871297 A CN108871297 A CN 108871297A CN 201810943321 A CN201810943321 A CN 201810943321A CN 108871297 A CN108871297 A CN 108871297A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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Abstract
The invention discloses a kind of bridge structure size detecting methods and system based on 3-D scanning technology, are related to bridge section model and design and construction technical field.This method comprises the following steps：Using three-dimensional scanning device being outwardly and inwardly scanned to bridge structure respectively；The scan data for handling three-dimensional scanning device, forms the three-D space structure model of bridge structure；Bridge structure size is obtained according to three-D space structure model.The system includes：Three-dimensional scanning device for being outwardly and inwardly scanned to bridge structure, and generates scan data；Data processing module generates three-D space structure model, and obtain bridge structure size according to three-D space structure model for handling scan data.The present invention can not only obtain the continuous size of bridge structure, and the size of available each key position, and dimensional integrity is good, and without putting into a large amount of measuring point component and tester, input cost is low, detection efficiency is high.
Description
Technical field
The present invention relates to bridge section models and design and construction technical field, are specifically related to a kind of based on 3-D scanning skill
The bridge structure size detecting method and system of art.
Background technique
The actual size of existing bridge structure is not only to examine the technical indicator of bridge construction quality and bridge structure disease
The important consideration factor that evil genetic analysis, maintenance concept design, strengthening construction are handled, detection method are widely used in bridge inspection
Assessment estimates, all kinds of bridge business such as maintenance and renovation, maintenance management.Traditional bridge structure size detecting method mainly uses whole station
Instrument, level, steel ruler, laser cross section instrument etc. test the key positions such as fulcrum, variable cross-section, span centre, quasi- in conjunction with data
Conjunction obtains bridge structure size.If expecting the truthful data being closer to practical bridge structure size, need by a large amount of
Measuring point encryption and test job, and obtained inspection result is discontinuous, not approximate.
Currently, for bridge test and evaluation, maintenance and renovation, maintenance management work, achievement that this kind of detection method obtains
Integrality is poor, investment is big, the time is long, economic results in society are not fully up to expectations.
Summary of the invention
The purpose of the invention is to overcome the shortcomings of above-mentioned background technique, a kind of bridge based on 3-D scanning technology is provided
Girder construction size detecting method and system.The present invention can not only obtain the continuous size of bridge structure, and available each
The size of a key position, obtained dimensional integrity is good, without putting into a large amount of measuring point component and tester, investment at
This is low, detection efficiency is high.
The present invention provides a kind of bridge structure size detecting method based on 3-D scanning technology, and this method includes following step
Suddenly：
Using three-dimensional scanning device being outwardly and inwardly scanned to bridge structure respectively；
The scan data for handling the three-dimensional scanning device forms the three-D space structure model of the bridge structure；
Bridge structure size is obtained according to the three-D space structure model.
Based on the above technical solution, before being scanned to bridge structure, according to the three-dimensional scanning device
Sweep radius and scanning accuracy lay at least one survey station near bridge structure, three-dimensional when being scanned to bridge structure
Scanning device is placed at survey station.
Based on the above technical solution, when being scanned to bridge structure, at least two are laid near bridge structure
A survey station, there are overlapping regions for the scanning area of adjacent survey station.
Based on the above technical solution, before being scanned to bridge structure, arranged in the overlapping region to
A few target ball, the mark as the subsequent image mosaic for having overlapping region.
Based on the above technical solution, the scan data for handling the three-dimensional scanning device includes：
Using target ball as the splicing condition of overlapping region, the point cloud data of different three-dimensional scanning devices is spliced,
Form the exterior three dimensional model and interior three-dimensional model of bridge structure；
Wherein, three-D space structure model is formed by the exterior three dimensional model and the interior three-dimensional model splicing.
Based on the above technical solution, respectively to the bridge structure when being outwardly and inwardly scanned, at least
There is the position of a target ball to be fixed and invariable；
According to the target ball position in the exterior three dimensional model and the interior three-dimensional model, by the exterior three dimensional mould
Type and the interior three-dimensional model splicing.
The present invention also provides a kind of bridge structure size detecting system based on 3-D scanning technology, which includes：
Three-dimensional scanning device for being outwardly and inwardly scanned to bridge structure, and generates scan data；
Data processing module generates the three-dimensional space knot of the bridge structure for handling the scan data
Structure model, and the bridge structure size is obtained according to the three-D space structure model.
Based on the above technical solution, the data processing module to the point cloud datas of different three-dimensional scanning devices into
Row splicing, forms the exterior three dimensional model and interior three-dimensional model of bridge structure, then by exterior three dimensional model and interior three-dimensional
Model splicing is at three-D space structure model.
Based on the above technical solution, the system also includes at least one target ball and at least two survey stations；
When being scanned to bridge structure, three-dimensional scanning device is placed at survey station；
There are overlapping regions for the scanning area of adjacent survey station；The target ball layout is in the overlapping region；
The three-dimensional scanning device is respectively to the bridge structure when being outwardly and inwardly scanned, at least one target
The position of mark ball is fixed and invariable.
Based on the above technical solution, the data processing module is using target ball as the splicing condition of overlapping region
Carry out the splicing for having the image of overlapping region.
Compared with prior art, advantages of the present invention is as follows：
(1) present invention passes through three-dimensional scanning device being outwardly and inwardly scanned to bridge structure respectively, 3-D scanning
When equipment scans, the mounting related components in bridge structure are not needed, it is not damaged to bridge structure.Meanwhile it being swept by handling three-dimensional
The scan data of equipment is retouched, three-D space structure model is formed, can not only obtain the continuous uninterrupted of accurate bridge structure
Size, and the size of each key position can be obtained, dimensional integrity is good.
(2) present invention is by laying three-dimensional scanning device and target ball outwardly and inwardly sweeping to bridge structure respectively
It retouches, detection method is simple and easy to implement, and it is short to the detection time of bridge structure, without putting into a large amount of measuring point component and survey
Examination personnel, input cost is low, detection efficiency is high, cost performance is high and practical, has good economic benefits and social benefit.
Detailed description of the invention
Fig. 1 is the flow chart of bridge structure size detecting method of the embodiment of the present invention based on 3-D scanning technology.
Elevation when Fig. 2 is the external dimensions detection of progress bridge structure of the embodiment of the present invention.
Schematic cross-sectional view when Fig. 3 is the external dimensions detection of progress bridge structure of the embodiment of the present invention.
Elevation when Fig. 4 is the inside dimension detection of progress bridge structure of the embodiment of the present invention.
Schematic cross-sectional view when Fig. 5 is the inside dimension detection of progress bridge structure of the embodiment of the present invention.
Appended drawing reference：1- three-dimensional scanning device, 2- target ball.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
Shown in Figure 1, the embodiment of the present invention provides a kind of bridge structure size detection side based on 3-D scanning technology
Method includes the following steps：
S1, using being outwardly and inwardly scanned to bridge structure respectively of three-dimensional scanning device 1.
Wherein, before being scanned to bridge structure, according to the sweep radius and scanning accuracy of three-dimensional scanning device 1,
Bridge structure nearby lays at least one survey station, and when being scanned to bridge structure, three-dimensional scanning device 1 is placed on survey station
Place.Wherein, three-dimensional scanning device 1 can be used laser and carry out 360 ° of scannings, form 360 ° of spherical scanning regions.
When being scanned to bridge structure, when being scanned to bridge structure, at least two are laid near bridge structure
Survey station, there are overlapping regions for the scanning area of adjacent survey station.
When laying at least two survey stations, before being scanned to bridge structure, at least one is arranged in overlapping region
Target ball 2, the mark as the subsequent image mosaic for having overlapping region.Wherein, image is made of a large amount of point cloud data.
In practical applications, further include reconnoitring bridge structure scene to be measured before being scanned to bridge structure, grasp week
Surrounding environment situation clears up the barrier in scanning range；Based on exploration data, in conjunction with structural characteristic of bridge, if
Meter detection embodiment.According to detection scheme, three-dimensional scanning device 1 is laid on the spot on bridge periphery to be measured, and to needing to scan
Maximum radius and the position of target ball 2 confirmed, it is ensured that measuring accuracy meets that project is expected to be required.
Specifically, being outwardly and inwardly scanned to bridge structure, scanning sequency follow " first external, rear inside, it is first whole
The principle of body, rear part ".No matter using which kind of scanning sequency, it is necessary to ensure that be able to satisfy data processing between neighboring stations most
The overlapping region of low requirement, and ensure that target ball 2 can be detected.
In the following, providing a present invention to the example of bridge structure being outwardly and inwardly scanned.
Shown in referring to figs. 2 and 3, the external dimensions detection of bridge structure is first carried out, arrangement three-dimensional is swept in the two sides of bridge
Retouch equipment 1.In the present embodiment, four three-dimensional scanning devices 1 are disposed about in bridge, four three-dimensional scanning devices 1 relative to
Bridge is arranged symmetrically along bridge to the axis in direction two-by-two, and dash area is the scan registration region of three-dimensional scanning device 1.Referring to figure
Shown in 3, a pair of of target ball 2 is arranged in overlapping region, target ball 2, target ball 2 can be detected in four three-dimensional scanning devices 1
It can be laid near span centre.Wherein, R is the sweep radius of three-dimensional scanning device 1.
Referring to fig. 4 and shown in Fig. 5, then the external dimensions detection of bridge structure is carried out, lays two three-dimensionals in bridge and sweep
Retouch equipment 1.It is shown in Figure 5, a pair of of target ball 2 is arranged in overlapping region, target can be detected in two three-dimensional scanning devices 1
Ball 2 is marked, target ball 2 can be laid near diaphragm plate manhole.
S2, the scan data for handling three-dimensional scanning device 1, form the three-D space structure model of bridge structure.
Wherein, the scan data of processing three-dimensional scanning device 1 includes：
Splicing condition by target ball 2 as overlapping region spells the point cloud data of different three-dimensional scanning devices 1
It connects, forms the exterior three dimensional model and interior three-dimensional model of bridge structure；Wherein, three-D space structure model is by exterior three dimensional mould
Type and interior three-dimensional model splicing are formed.
Respectively to bridge structure when being outwardly and inwardly scanned, the position of at least one target ball 2 is to fix not
Become；
According to 2 position of target ball in exterior three dimensional model and interior three-dimensional model, by exterior three dimensional model and inside three
Dimension module splicing.
When only one survey station, directly point cloud data is spliced, formed bridge structure exterior three dimensional model and
Interior three-dimensional model.
Wherein, the exterior three dimensional model and interior three-dimensional model for forming bridge structure can also include：To scan data into
Row preliminary analysis, rejecting significantly interferes with a cloud, in the case where ensuring that precision is met the requirements, carries out gridding processing to model,
It is accurate to extract system point cloud coordinate and characteristic value, obtain accurately exterior three dimensional model and interior three-dimensional model.
S3, bridge structure size is obtained according to three-D space structure model.
Specifically, bridge structure size includes bridge structure inside and outside contour size detection and sectional dimension detection.According to three
Dimension space structural model obtains bridge structure size and can specifically include：Bridge structure is extracted in three-D space structure model
Inside and outside dimension line can must indulge D coordinates value of the bridge to any position, can obtain bridge structure any position using slice function
Direction across bridge cross dimensions and its D coordinates value.Continuous vertical or horizontal structure size is obtained according to this detection method, for visitor
The actual state offer direct basis for judging bridge structure is provided.
Meanwhile the progress data processing of three-D space structure model can also be obtained to the practical body of bridge structure all parts
Product, to detect bridge quality.
The embodiment of the present invention also provides a kind of bridge structure size detecting system based on 3-D scanning technology, the system packet
It includes：Three-dimensional scanning device 1 and data processing module.
Three-dimensional scanning device 1 is used for being outwardly and inwardly scanned to bridge structure, and generates scan data；
Data processing module is used to handle scan data, generates the three-D space structure model of bridge structure, and
Bridge structure size is obtained according to three-D space structure model.
Specifically, data processing module splices the point cloud data of different three-dimensional scanning devices 1, forms bridge structure
Exterior three dimensional model and interior three-dimensional model, then by exterior three dimensional model and interior three-dimensional model splicing at three-dimensional space knot
Structure model.Splicing condition when point cloud data is spliced, using target ball 2 as overlapping region.Wherein, when only one survey
When standing, data processing module directly splices point cloud data, forms the exterior three dimensional model and interior three-dimensional of bridge structure
Model.
Optionally, present system further includes at least one target ball 2 and at least two survey stations；It is carried out to bridge structure
When scanning, three-dimensional scanning device 1 is placed at survey station；
There are overlapping regions for the scanning area of adjacent survey station；Target ball 2 is arranged in the overlapping region.
Optionally, three-dimensional scanning device 1 is respectively to bridge structure when being outwardly and inwardly scanned, at least one target
The position of mark ball 2 is fixed and invariable.In practical application, target ball 2 is generally arranged in pairs.
Specifically, splicing condition of the data processing module by target ball 2 as overlapping region carries out the figure for having overlapping region
The splicing of picture forms the exterior three dimensional model and interior three-dimensional model of bridge structure.
Those skilled in the art can carry out various modifications to the embodiment of the present invention and modification, if these modifications and change
For type within the scope of the claims in the present invention and its equivalent technologies, then these modifications and variations are also in protection scope of the present invention
Within.
The prior art that the content being not described in detail in specification is known to the skilled person.
Claims (10)
1. a kind of bridge structure size detecting method based on 3-D scanning technology, which is characterized in that include the following steps：
Using three-dimensional scanning device being outwardly and inwardly scanned to bridge structure respectively；
The scan data for handling the three-dimensional scanning device forms the three-D space structure model of the bridge structure；
Bridge structure size is obtained according to the three-D space structure model.
2. as described in claim 1 based on the bridge structure size detecting method of 3-D scanning technology, it is characterised in that：To bridge
Before girder construction is scanned, according to the sweep radius and scanning accuracy of the three-dimensional scanning device, the cloth near bridge structure
If at least one survey station, when being scanned to bridge structure, three-dimensional scanning device is placed at survey station.
3. as claimed in claim 1 or 2 based on the bridge structure size detecting method of 3-D scanning technology, it is characterised in that：
When being scanned to bridge structure, at least two survey stations are laid near bridge structure, the scanning area of adjacent survey station exists
Overlapping region.
4. as claimed in claim 3 based on the bridge structure size detecting method of 3-D scanning technology, it is characterised in that：To bridge
Before girder construction is scanned, at least one target ball is arranged in the overlapping region, as the subsequent figure for having overlapping region
As the mark of splicing.
5. as claimed in claim 4 based on the bridge structure size detecting method of 3-D scanning technology, which is characterized in that processing
The scan data of the three-dimensional scanning device includes：
Using target ball as the splicing condition of overlapping region, the point cloud data of different three-dimensional scanning devices is spliced, is formed
The exterior three dimensional model and interior three-dimensional model of bridge structure；
Wherein, three-D space structure model is formed by the exterior three dimensional model and the interior three-dimensional model splicing.
6. as claimed in claim 5 based on the bridge structure size detecting method of 3-D scanning technology, it is characterised in that：
Respectively to the bridge structure when being outwardly and inwardly scanned, the position of at least one target ball is to immobilize
's；
According to the target ball position in the exterior three dimensional model and the interior three-dimensional model, by the exterior three dimensional model and
The interior three-dimensional model splicing.
7. a kind of bridge structure size detecting system based on 3-D scanning technology, which is characterized in that including：
Three-dimensional scanning device for being outwardly and inwardly scanned to bridge structure, and generates scan data；
Data processing module generates the three-D space structure mould of the bridge structure for handling the scan data
Type, and the bridge structure size is obtained according to the three-D space structure model.
8. as claimed in claim 7 based on the bridge structure size detecting system of 3-D scanning technology, it is characterised in that：It is described
Data processing module splices the point cloud data of different three-dimensional scanning devices, formed bridge structure exterior three dimensional model and
Interior three-dimensional model, then by exterior three dimensional model and interior three-dimensional model splicing at three-D space structure model.
9. as claimed in claim 7 based on the bridge structure size detecting system of 3-D scanning technology, it is characterised in that：It is described
System further includes at least one target ball and at least two survey stations；
When being scanned to bridge structure, three-dimensional scanning device is placed at survey station；
There are overlapping regions for the scanning area of adjacent survey station；The target ball layout is in the overlapping region；
The three-dimensional scanning device is respectively to the bridge structure when being outwardly and inwardly scanned, at least one target ball
Position be fixed and invariable.
10. as claimed in claim 9 based on the bridge structure size detecting system of 3-D scanning technology, it is characterised in that：Institute
It states data processing module and carries out the splicing for having the image of overlapping region for target ball as the splicing condition of overlapping region.
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| CN201810943321.3A CN108871297A (en) | 2018-08-17 | 2018-08-17 | Bridge structure size detecting method and system based on 3-D scanning technology |
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| CN201810943321.3A CN108871297A (en) | 2018-08-17 | 2018-08-17 | Bridge structure size detecting method and system based on 3-D scanning technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112016706A (en) * | 2020-07-13 | 2020-12-01 | 南方电网科学研究院有限责任公司 | Method, device, equipment and storage medium for managing insulating parts of power equipment |
| CN113158329A (en) * | 2021-03-05 | 2021-07-23 | 中路高科交通检测检验认证有限公司 | Method for rapidly positioning and measuring constant load condition of in-service bridge structure |
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| CN113158329A (en) * | 2021-03-05 | 2021-07-23 | 中路高科交通检测检验认证有限公司 | Method for rapidly positioning and measuring constant load condition of in-service bridge structure |
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Application publication date: 20181123 |