CN110345865A - A kind of steel construction digitizing detection method based on 3-D scanning - Google Patents
A kind of steel construction digitizing detection method based on 3-D scanning Download PDFInfo
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- CN110345865A CN110345865A CN201910024812.2A CN201910024812A CN110345865A CN 110345865 A CN110345865 A CN 110345865A CN 201910024812 A CN201910024812 A CN 201910024812A CN 110345865 A CN110345865 A CN 110345865A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
- G01C11/04—Interpretation of pictures
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The present invention relates to one kind can easily and accurately detect abnormally-structured complex curve in Steel Bridge, oversize structure structure size and a kind of linear steel construction digitizing detection method based on 3-D scanning, according to design structure, theoretical data model is created using 3-dimensional digital modeling software, and lays control point；According to the job requirements of three-dimensional scanning device, point cloud data acquisition is carried out to bridge steel structure entity in its suitable environment, and carry out point Yun Qingli and splicing, detection data model is generated using special-purpose software；Theoretical data model and detection data model are fitted according to certain rule, determine the deviation of theoretical data model and detection data model, so that the variance analysis for obtaining manufacture structure and design structure is reported.The emphasis of this technology is the creation precision of theoretical data model, three-dimensional scanning measurement generates the measurement accuracy of detection data model and the variance analysis of the two data model handles rule.The art of this patent, it is applied widely, meet and technology progress structure detection can be used under three-dimensional scanning measurement operating condition.
Description
Technical field
It can easily and accurately detect that complex curve in Steel Bridge is abnormally-structured, oversize structure the present invention relates to one kind
Structure size and a kind of linear steel construction digitizing detection method based on 3-D scanning, belong to Steel Bridge fabricate technology
With execution management method therefor field.
Background technique
Previous bridge steel structure size detection is all made of the measuring tools such as steel disk ruler, ruler, and elevation detection uses level
With Sopwith staff conjunction measuring, structural linetype is measured using total station or theodolite.Traditional measurement method is in all trades and professions
Using for many years, there is implementation experience abundant, the requirement of pre-control precision can be played to the manufacture of GENERAL TYPE bridge steel structure.But it is right
In complex curve, the bridge steel structure of labyrinth, using traditional measurement mode the drawbacks of is more significant, such as complicated linetype without
Method detection judgement, curved measurement is difficult, dimensional measurement error is big, data acquire difficulty.For this purpose, traditional measurement mode for
There are certain difficulty for complex curve, labyrinth measurement and precision judgement.
With the continuous development of Steel Bridge industry, domestic steel bridge girder construction design is also maked rapid progress, and not only meeting it makes
With functional requirement, the aesthetic of constructional appearance is also focused on.In recent years, complicated curve is abnormally-structured, oversize structure
Etc. Bridge Designs emerge one after another, high requirement is proposed to the processing and manufacturing precision of Steel Bridge.It, can not be right using traditional measurement mode
Complex curve abnormally-structured linear, overall size are effectively measured, and belong to weak link in the control of the structure accuracy of manufacture；
For oversize structure, traditional measurement limitation is to measure operation difficulty, and the artificial related data difficulty that acquires increases, operation peace
It is complete also especially prominent, cause data to acquire incomplete or efficiency extremely low.
Summary of the invention
Purpose of design: in order to detect, complex curve in Steel Bridge is abnormally-structured, structure size and line of oversize structure
Shape avoids the shortcoming in background technique in conjunction with the requirement of three-dimensional scanning measurement technical application, designs a set of perfect measurement point
Analysis system determines the deviation of product structure and design structure, provides a kind of measurement means for the quality of project.
Design scheme: in order to realize above-mentioned purpose of design.The present invention is based on three-dimensional scanning measurement technology, using can satisfy
The existing three-dimensional scanning measurement instrument that the detection of all kinds of bridge steel structure machining accuracies needs can be the number of bridge steel structure
Based on changing the existing software that modeling provides support, using the Analysis on Results of three-dimensional scanning measurement operation, it is based on scan data mould
Type is compared with creation mathematical model, plans as a whole to apply by three-dimensional scanning measurement and each software, each technology in bridge steel structure,
Reach expected precision control of quality, realizes and three-dimensional space is carried out to bridges such as complicated abnormally-structured, the oversize structures of curve
Between size and linear detection, realize product quality precision controlling target, become for the design of Steel Bridge from now on towards complex curve, enlargement
Technical guarantee is provided in leather process, is innovative point of the present invention in bridge steel structure manufacture detection, with biggish application
Value, exploitativeness are strong.
Based on Steel Bridge three-dimensional digital structure, using three-dimensional scanning measurement equipment and data processing software, using deviation
Comparative analysis program judges bridge steel structure machining accuracy, to achieve the purpose that detect Mass accuracy.
Steel structure three-dimensional scanning digital measuring mainly includes following several respects:
(1) theoretical data model creates: according to Bridge Design structure, theoretical data model is created using dedicated three-dimensional software,
Model should reflect that design idea, precision meet the related request of design strictly according to the facts；Additionally, it is contemplated that the construction of Steel Bridge manufacture and installation
It is required that Steel Bridge manufacture, mounting process allowance should be added when theoretical data model creates, to reach manufacture structure and theory
The consistent principle of data model.
(2) 3 d scan data acquires: according to three-dimensional scanning measurement equipment operation environmental requirement, measuring standard early period
It is standby.Steady three-dimensional scanning device is disposed, according to setting device measuring precision is required, is acquired using multi-site material object data.It is each to survey
It is converted between amount website, is realized and be accurately positioned by setting fixation measuring target.
(3) 3-D scanning detection data model generates: exclusive data processing software is utilized, by the 3-D scanning of collection in worksite
Data position automatic identification by target and are spliced into entirety；The point cloud data needed is intercepted, remaining point cloud data is removed, after being conducive to
Phase data processing.By treated, data import dedicated analysis software, and remove obvious noise manually, form detection data mould
Type.
(4) 3-D scanning variance analysis: under dedicated analysis software environment, data model and theoretical data model will test
It is directed respectively into, by clicking carry out pre-align, carrying out automatic aligning again after pre-align, (automatic aligning processing is based on minimum
Square law fitting)；By analysis software from functional, model data comparison deviation data both is automatically generated, in model data
Upper presentation variance analysis coloured picture, or local analysis is carried out by annotation.
Compared with the background technology, the present invention, first is that applied widely: three-dimensional scanning measurement detection technique is applicable not only to steel
Bridge complex curve is abnormally-structured, oversize structure, while can meet the size of other different types of rridges structure types and linear
Detection；Second is that it is high to detect comprehensive precision: three-dimensional scanning measurement detection technique is a kind of digital measuring of three-dimensional, and traditional
Single size, linear detection are different, simultaneously can size to each position, all directions and it is linear synchronize detection, examine
It is high to survey precision；Third is that realizing detection automation: traditional sensing techniques are based on manual work；And three-dimensional scanning measurement preparation,
Subsequent processing is outside human assistance, and entire DATA REASONING process realizes automation；Fourth is that detection data is digitlization: tradition
Testing result is one group of numerical value, is generally filled in a form retention by testing staff；The detection data of 3-D scanning is one group of point cloud data, into
And can handle and generate detection data model, there is intuitive；Fifth is that quality control is comprehensive: traditional detection is only able to achieve single
Size and linear judgement are independent carry out to quality control on construction；3 d scan data it is comprehensive, determine that it has
The comprehensive comprehensive detection data of overall structure, gives comprehensive judgement, is controlled comprehensively construction quality and played a key effect.
Detailed description of the invention
Fig. 1 is according to design structure, in conjunction with the theoretical data model of manufacturing process allowance creation.
Fig. 2 is to acquire structure material object data using three-dimensional scanning device.
Fig. 3 is to carry out data processing according to acquisition data using special-purpose software and obtain detection data model.
Fig. 4 is to compare and analyze theoretical data model and detection data model under special-purpose software environment, is obtained inclined
Poor analysis report.
Specific embodiment
(1) 3 d modeling software selection CATIA software carries out the creation of threedimensional model.The creation of CATIA theoretical data model
Example is shown in schematic diagram 1.
(2) the IMAGER 5010C spatial digitizer of three-dimensional scanning measurement equipment selection Z+F company, Germany, automatic rotary
Scanning, scanning speed is fast, scanning accuracy is high.Three-dimensional scanning measurement example is shown in schematic diagram 2.
(3) data processing software is carried using the IMAGER 5010C spatial digitizer of Z+F company, by the point of collection in worksite
Cloud data are spliced by target automatic identification, choose wherein useful point cloud data；And data importing polyworks is soft after handling
Part carries out noise processing, forms detection data model.3-D scanning detection data model generates example and sees schematic diagram 3.
(4) in the case where polyworks analyzes software environment, it will test data model and be directed respectively into theoretical data model, from
The two model data is generated after dynamic alignment compares deviation data.3-D scanning variance analysis example is shown in Fig. 4.
It is to be understood that: although above-described embodiment retouches mentality of designing of the invention detailed text of contrasting
It states, but these verbal descriptions, only the simple text of mentality of designing of the present invention is described, rather than to mentality of designing of the present invention
Limitation, any combination, increase or modification without departing from mentality of designing of the present invention falls within the protection scope of the present invention.
Claims (1)
1. a kind of steel construction digitizing detection method based on 3-D scanning, it is characterized in that:
(1) theoretical data model creates: according to Bridge Design structure, theoretical data model is created using dedicated three-dimensional software,
Model should reflect that design idea, precision meet the related request of design strictly according to the facts；Secondly, considering the construction of Steel Bridge manufacture and installation
It is required that Steel Bridge manufacture, mounting process allowance should be added when theoretical data model creates, to reach manufacture structure and theory
The consistent principle of data model；
(2) 3 d scan data acquires: according to three-dimensional scanning measurement equipment operation environmental requirement, measuring early-stage preparations, pacifies
The steady three-dimensional scanning device of horizontalization is acquired using multi-site material object data according to setting device measuring precision is required, respectively measures website
Between convert, pass through setting fixation measuring target realize be accurately positioned；
(3) 3-D scanning detection data model generates: exclusive data processing software is utilized, by the 3 d scan data of collection in worksite
Automatic identification, which is positioned, by target is spliced into entirety；The point cloud data needed is intercepted, remaining point cloud data is removed, and rear issue is conducive to
According to processing, by treated, data import dedicated analysis software, and remove obvious noise manually, form detection data model；
(4) 3-D scanning variance analysis: under existing analysis software environment, it will test data model and theoretical data model distinguished
It imports, by clicking carry out pre-align, carries out automatic aligning again after pre-align, automatic aligning processing is based on least square
Method fitting；By analysis software from functional, model data comparison deviation data both is automatically generated, is presented in model data
Variance analysis coloured picture, or local analysis is carried out by annotation.
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Cited By (7)
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|---|---|---|---|---|
| CN112211111A (en) * | 2020-10-29 | 2021-01-12 | 中铁二十二局集团有限公司 | Spherical hinge positioning and mounting system based on three-dimensional laser scanning and application method thereof |
| CN112817270A (en) * | 2020-12-28 | 2021-05-18 | 浙江精工钢结构集团有限公司 | High-precision end face control process for steel member |
| CN112949003A (en) * | 2021-03-31 | 2021-06-11 | 科世达(上海)机电有限公司 | Part measuring method, device, equipment and storage medium |
| CN113324495A (en) * | 2021-05-11 | 2021-08-31 | 广西玉柴机器股份有限公司 | Method for digitally and rapidly detecting size of cylinder block casting |
| CN113405487A (en) * | 2021-06-03 | 2021-09-17 | 梦达驰汽车系统（天津）有限公司 | Rapid positioning and high-precision 3D scanning measurement method |
| CN113532738A (en) * | 2021-07-22 | 2021-10-22 | 中国第一汽车股份有限公司 | Centroid measuring method |
| CN116147484A (en) * | 2023-02-27 | 2023-05-23 | 东南大学 | Bridge service line shape identification method based on multipoint cloud fusion |
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| CN112211111A (en) * | 2020-10-29 | 2021-01-12 | 中铁二十二局集团有限公司 | Spherical hinge positioning and mounting system based on three-dimensional laser scanning and application method thereof |
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| CN113532738A (en) * | 2021-07-22 | 2021-10-22 | 中国第一汽车股份有限公司 | Centroid measuring method |
| CN116147484A (en) * | 2023-02-27 | 2023-05-23 | 东南大学 | Bridge service line shape identification method based on multipoint cloud fusion |
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Application publication date: 20191018 |