CN104899378A - Digital installation method for high-rise steel structure based on BIM and three-dimensional measurement - Google Patents
Digital installation method for high-rise steel structure based on BIM and three-dimensional measurement Download PDFInfo
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Abstract
The invention provides a digital installation method for a high-rise steel structure based on BIM and three-dimensional measurement. The method includes following steps: step 1, establishing a BIM three-dimensional digital model of the high-rise steel structure; step 2, installing a three-dimensional measuring system at the spot and measuring a point cloud model of a member; step 3, processing the point cloud model by a contrast system and calculating the maximum error in the contrast system; step 4, giving an instruction of an adjusting method for on-site installation if the maximum error Delta>Delta0; and step 5, anchoring the member if the on-site member position error satisfies the requirement so that accurate installation of the member of the high-rise steel structure is realized. According to the method, aiming to the characteristics of high structure and complicated space of high-rise steel, BIM and three-dimensional measurement technologies are employed, and on-site accurate installation of the steel structure is realized.
Description
Technical field
The present invention relates to a kind of high-rise steel structure digitizing field engineering, particularly a kind of high-rise steel structure digitizing installation method based on BIM and three-dimensional measurement.
Background technology
The research of relevant department of the U.S. shows, the non-productive work of building industry is up to (waste) 57%, and this numeral manufacturing is 26%, and both differ 21%.The production efficiency of visible building industry is very low, and thisly wants significantly to enhance productivity, and so will relate to the change of building industry technology.At this stage, the only resource realizing this change is exactly BIM technology, and it is referred to as the second revolution of building industry.
BIM(Building Information Model) be the abbreviation of BIM, 1975, Chuck Eastman proposed the source " Building Description System " (building description system) of BIM theory.The concept of this system is the origin of the concept of BIM, propose three-dimensional building model, the automatic renewal view of cooperation platform Network Based, quantities calculate and the keyword of the BIM such as schedule layout based on database automatically, current BIM is mainly used at structure and pipeline collision detection, building cost control and construction simulation.Three-dimensional measurement technology is a kind of emerging modernization acquisition of information means, and principle is by high-speed driving and registration technology, to testee with the high-frequency emission laser beam up to ten thousand times per second, obtains reflected signal and a kind of technology of imaging.Three-dimensional measurement gathers each body surface cloud data in the measurements, and speed is fast, precision is high, the cloud data generated is treated can be exchanged into BIM model data, is usually used in building surveying and safeguards and emulation, Bit andits control and surface structure three-dimensional modeling, topographical surveying etc.
In present stage and in the future of construction industry development, what advocate is the industrialization of building industry, improves the production efficiency of building industry.Steel construction, as a part for building industry, in industrialized development process, has a representational status.And in current architectural industrialization process, all mainly realized by BIM technology.The production efficiency of high-rise steel structure was low in the past, and precision is low, easily did over again.
Summary of the invention
The object of the present invention is to provide a kind of high-rise steel structure digitizing installation method based on BIM and three-dimensional measurement, its feature that is high according to high-rise steel structure and spatial complex, utilize BIM and three-dimensional measurement technology, by component mounting process information visualization and visualize, and check mutually with design, realize the accurate installation of component, to improving the production efficiency of Construction of Steel Structure.
The invention provides a kind of high-rise steel structure digitizing installation method based on BIM and three-dimensional measurement, it is characterized in that, the described high-rise steel structure digitizing installation method based on BIM and three-dimensional measurement comprises the following steps:
Step one, utilizes BIM technology, and according to the working drawing that designing institute goes out, the third party builds out the BIM three-dimensional digital model of high-rise steel structure, and is confirmed by relevant examination; Or forthcoming generations is the BIM three-dimensional digital model directly being provided high-rise steel structure by designing institute.Afterwards by this BIM three-dimensional digital model stored in comparison system;
Step 2, in-site installation three-dimension measuring system, lays suitable reference mark and sets up Controling network, carrying out Steel Structure Installation, measured the point cloud model of on-the-spot Components installation result, input comparison system by wireless device by three-dimensional measurement;
Step 3, in comparison system, comparison system processes point cloud model, afterwards by contrast BIM three-dimensional digital model and field erected point cloud model, calculates maximum error δ;
Step 4, if maximum error δ > is δ
0, δ
0for the permissible error of actual Steel Structure Installation is limit, comparison system can according to the difference of point cloud model relative to BIM three-dimensional digital model, provide the instruction of in-site installation adjustment way, re-start the Steel Structure Installation part in step 2 and step 3, until meet δ≤δ
0;
Step 5, after on-the-spot member position error meets the demands, carries out the anchoring of component, thus realizes the accurate installation of high-rise steel structure component.
Preferably, the described high-rise steel structure digitizing installation method based on BIM and three-dimensional measurement adopts following three modules:
BIM three-dimensional digital model, the generation of BIM three-dimensional digital model mainly relies on the third party, and the future development stage is directly provided by designing institute;
Three-dimension measuring system, three-dimension measuring system comprises spatial digitizer, locating device, other subsidiary equipment and auxiliary devices, three-dimension measuring system, by in-site measurement, provides the position of component on-site hoisting and the timely point cloud model producing structure installment result;
Comparison system, comparison system stores the BIM three-dimensional digital model of high-rise steel structure, by displaying of component mounting process information visualization and visualize, by BIM three-dimensional digital model and the point cloud model obtained in time being contrasted, the scene realizing steel construction is accurately installed.
The present invention has following beneficial effect: BIM technology be applied on steel construction in-site installation, by the real-time of three-dimensional measurement, and the result of reflection actual installation in time, and compared with design, Timeliness coverage problem, avoids doing over again; In current construction method, three-dimensional measurement just carries out after steel construction part project installation completes, then the model measured is carried out artificial contrast with designing a model, and checks and installs, here three-dimensional measurement runs through whole installation process, and very large improves installation accuracy; The present invention also has a maximum difference, use point cloud model, instead of the surface model built by cloud data, in present stage construction method, later stage can according to the point cloud model measured, build out the surface model of structure, check installation, this Period Process building out surface model is long, cost is large, after process, precision also can decline, and directly use original point cloud model herein, precision can be higher.Particularly high-rise and super high steel structure is installed and is occurred error, if do not have Timeliness coverage, is very huge on the impact of whole engineering.And the technology of this Timeliness coverage problem is also apparent to the raising of Construction of Steel Structure efficiency.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the high-rise steel structure digitizing installation method based on BIM and three-dimensional measurement being applicable to the current generation;
Fig. 2 is the theory diagram of the high-rise steel structure digitizing installation method based on BIM and three-dimensional measurement being applicable to the future development stage.
Embodiment
Below in conjunction with accompanying drawing, this high-rise steel structure digitizing installation method based on BIM and three-dimensional measurement is described in further detail.In conjunction with specification digest and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to convenient, aid illustration the invention process process lucidly.
In conjunction with present stage BIM technology implementing method and Fig. 1, the high-rise steel structure digitizing installation method that the present invention is based on BIM and three-dimensional measurement comprises the following steps:
Step one, the third party (BIM consulting firm), utilizes BIM technology, according to the working drawing that designing institute goes out, builds out the BIM three-dimensional digital model of high-rise steel structure, and is confirmed by relevant examination, afterwards by this model stored in comparison system.Specifically, the BIM three-dimensional digital model that the third party goes out high-rise steel structure send to be examined by relevant reviewing authority, after passing, becomes spendable BIM three-dimensional digital model, and this is applicable present stage building industry production run.In work progress, design alteration can be related to or irreversible problem appears in site operation, at this moment BIM three-dimensional digital model needs to adjust, after being passed by relevant unit again, become the used BIM three-dimensional digital model of new stage, that is BIM three-dimensional digital model can according to circumstances adjust in real time.By spendable BIM three-dimensional digital model stored in comparison system;
Step 2, in-site installation three-dimension measuring system, lays suitable reference mark and sets up Controling network, carrying out Steel Structure Installation, measured the point cloud model of on-the-spot Components installation result, input comparison system by wireless device by three-dimensional measurement.Specifically, for concrete component, determine concrete installation site by system, carry out steel structure hoisting according to job design.After lifting component to the approximate location preset, by relevant utility appliance, inching is carried out to predeterminated position to component, measured the point cloud model of on-the-spot Components installation result by three-dimension measuring system in time, by wireless device transmission input comparison system;
Step 3, in comparison system, first comparison system carries out coordinate transform to the point cloud model of input and removes dry process.Coordinate transform is that the coordinate information of the point cloud model of in-site measurement to be converted to the information that to design a model with BIM consistent.Except dry be that other unwanted cloud datas that will measure are removed; Afterwards, system, according to point cloud model coordinate relevant information, finds out component corresponding in BIM three-dimensional digital model, and is analyzed by field erected point cloud model after itself and process, calculates maximum error δ;
Step 4, if maximum error δ > is δ
0(δ
0for the permissible error of actual Steel Structure Installation is limit), comparison system can according to the difference of point cloud model relative to BIM three-dimensional digital model, provide the instruction of in-site installation adjustment way, the adjustment direction of such as component region of interest, distance size, angular dimension etc., re-start the Steel Structure Installation part in step 2 and step 3 afterwards, until meet δ≤δ
0;
Step 5, after on-the-spot component installation location error meets the demands, carry out the anchoring of component, installation process terminates, thus realizes the accurate installation of high-rise steel structure component.
In conjunction with following BIM technology development trend and Fig. 2, the high-rise steel structure digitizing installation method that the present invention is based on BIM and three-dimensional measurement comprises the following steps:
Step one, is directly provided the BIM digital model of design by designing institute, and is confirmed by relevant examination, becomes spendable BIM digital model, afterwards by this model stored in comparison system.Specifically, the BIM three-dimensional digital model that designing institute goes out high-rise steel structure send to be examined by relevant reviewing authority, after passing, becomes spendable BIM three-dimensional digital model, and this meets following present stage building industry production run.In work progress, design alteration can be related to or irreversible problem appears in site operation, at this moment BIM three-dimensional digital model needs to adjust, after being passed by relevant unit again, become the used BIM three-dimensional digital model of new stage, that is BIM three-dimensional digital model can according to circumstances adjust in real time.By spendable BIM three-dimensional digital model stored in comparison system;
Step 2, in-site installation three-dimension measuring system, lays suitable reference mark and sets up Controling network, carrying out Steel Structure Installation, measured the point cloud model of on-the-spot Components installation result, input comparison system by wireless device by three-dimensional measurement.Specifically, for concrete component, determine concrete installation site by system, carry out steel structure hoisting according to job design.After lifting component to the approximate location preset, by relevant utility appliance, inching is carried out to predeterminated position to component, measured the point cloud model of on-the-spot Components installation result by three-dimension measuring system in time, by wireless device transmission input comparison system;
Step 3, in comparison system, first comparison system carries out coordinate transform to the point cloud model of input and removes dry process; Afterwards, system, according to point cloud model coordinate relevant information, finds out component corresponding in BIM three-dimensional digital model, and is analyzed by field erected point cloud model after itself and process, calculates maximum error δ;
Step 4, if maximum error δ > is δ
0(δ
0for the permissible error of actual Steel Structure Installation is limit), comparison system can according to the difference of point cloud model relative to BIM three-dimensional digital model, provide the instruction of in-site installation adjustment way, the adjustment direction of such as component region of interest, distance size, angular dimension etc., re-start the Steel Structure Installation part in step 2 and step 3 afterwards, until meet δ≤δ
0;
Step 5, after on-the-spot component installation location error meets the demands, carry out the anchoring of component, installation process terminates, thus realizes the accurate installation of high-rise steel structure component.
The present invention specifically has following three modules:
BIM three-dimensional digital model, on current stage market, the generation of BIM three-dimensional digital model mainly relies on the third party, the BIM consulting firm of namely rising now.The working drawing that BIM consulting firm goes out according to designing institute, builds out the BIM three-dimensional digital model of high-rise steel structure, then is audited by relevant unit, audits by using.Following developing direction, namely next BIM standard out after, BIM three-dimensional digital model will directly be provided by designing institute;
Three-dimension measuring system, three-dimension measuring system comprises spatial digitizer, locating device, other subsidiary equipment and auxiliary devices, three-dimension measuring system, by in-site measurement, provides the position of component on-site hoisting and the timely point cloud model producing structure installment result;
Comparison system, comparison system stores the BIM three-dimensional digital model of high-rise steel structure, by displaying of component mounting process information visualization and visualize, by BIM three-dimensional digital model and the point cloud model obtained in time being contrasted, the scene realizing steel construction is accurately installed.
The present invention, is applied on steel construction in-site installation by BIM technology, by the real-time of three-dimensional measurement, and the result of reflection actual installation in time, and compared with design, Timeliness coverage problem, avoids doing over again; In former construction method, three-dimensional measurement just carries out after steel construction part project installation completes, then the model measured is carried out artificial contrast with designing a model, and checks and installs, here three-dimensional measurement runs through whole installation process, and very large improves installation accuracy; The present invention also has a maximum difference, use point cloud model, instead of the surface model built by cloud data, in present stage construction method, later stage can according to the point cloud model measured, build out the surface model of structure, check installation, this Period Process building out surface model is long, cost is large, after process, precision also can decline, and directly use original point cloud model herein, precision can be higher.BIM and three-dimensional measurement technology are applied in high-rise steel structure installation process, to improve the production efficiency of Construction of Steel Structure, meet building industry industrialized development object.
Claims (2)
1., based on a high-rise steel structure digitizing installation method for BIM and three-dimensional measurement, it is characterized in that, the described high-rise steel structure digitizing installation method based on BIM and three-dimensional measurement comprises the following steps:
Step one, utilizes BIM technology, and according to the working drawing that designing institute goes out, the third party builds out the BIM three-dimensional digital model of high-rise steel structure, and is confirmed by relevant examination; Or forthcoming generations is the BIM three-dimensional digital model directly being provided high-rise steel structure by designing institute, afterwards by this BIM three-dimensional digital model stored in comparison system;
Step 2, in-site installation three-dimension measuring system, lays suitable reference mark and sets up Controling network, carrying out Steel Structure Installation, measured the point cloud model of on-the-spot Components installation result, input comparison system by wireless device by three-dimensional measurement;
Step 3, in comparison system, comparison system processes point cloud model, afterwards by contrast BIM three-dimensional digital model and field erected point cloud model, calculates maximum error δ;
Step 4, if maximum error δ > is δ
0, δ
0for the permissible error of actual Steel Structure Installation is limit, comparison system can according to the difference of point cloud model relative to BIM three-dimensional digital model, provide the instruction of in-site installation adjustment way, re-start the Steel Structure Installation part in step 2 and step 3, until meet δ≤δ
0;
Step 5, after on-the-spot member position error meets the demands, carries out the anchoring of component, thus realizes the accurate installation of high-rise steel structure component.
2. the high-rise steel structure digitizing installation method based on BIM and three-dimensional measurement according to claim 1, is characterized in that, the described high-rise steel structure digitizing installation method based on BIM and three-dimensional measurement adopts following three modules:
BIM three-dimensional digital model, the generation of BIM three-dimensional digital model mainly relies on the third party, and the future development stage is directly provided by designing institute;
Three-dimension measuring system, three-dimension measuring system comprises spatial digitizer, locating device, other subsidiary equipment and auxiliary devices, three-dimension measuring system, by in-site measurement, provides the position of component on-site hoisting and the timely point cloud model producing structure installment result;
Comparison system, comparison system stores the BIM three-dimensional digital model of high-rise steel structure, by displaying of component mounting process information visualization and visualize, by BIM three-dimensional digital model and the point cloud model obtained in time being contrasted, the scene realizing steel construction is accurately installed.
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