CN117489024A - Large-space curved surface steel structure roof installation positioning method - Google Patents
Large-space curved surface steel structure roof installation positioning method Download PDFInfo
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- CN117489024A CN117489024A CN202311320634.0A CN202311320634A CN117489024A CN 117489024 A CN117489024 A CN 117489024A CN 202311320634 A CN202311320634 A CN 202311320634A CN 117489024 A CN117489024 A CN 117489024A
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- steel structure
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 48
- 239000010959 steel Substances 0.000 title claims abstract description 48
- 238000009434 installation Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 238000012937 correction Methods 0.000 claims abstract description 5
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000013499 data model Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/02—Reliability analysis or reliability optimisation; Failure analysis, e.g. worst case scenario performance, failure mode and effects analysis [FMEA]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Geometry (AREA)
- Theoretical Computer Science (AREA)
- Civil Engineering (AREA)
- Computer Hardware Design (AREA)
- Structural Engineering (AREA)
- General Physics & Mathematics (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Electromagnetism (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a large-space curved surface steel structure roof installation positioning method, which comprises the steps of arranging a measurement control network and establishing control points; deepening a steel structure construction drawing, and establishing a BIM three-dimensional model; determining the installation and construction sequence of the steel structure; positioning and temporarily welding by a conventional measuring instrument; the three-dimensional laser scanner performs entity digital scanning modeling; the BIM model is overlapped with the point cloud model, and the 3D deviation is analyzed to generate the installation error of each component; and carrying out targeted correction based on component deviation conditions, and finally welding the steel components. The invention ensures the installation and positioning precision of the large-space curved steel structure roof, avoids a series of problems of unaesthetic subsequent construction, unsafe structure and the like, and brings remarkable benefits to engineering construction.
Description
Technical Field
The invention relates to the technical field of steel structure installation, in particular to a large-space curved surface steel structure roof installation positioning method.
Background
The steel structure is widely applied to modern buildings due to the characteristics of light weight, good plasticity, large span, high strength, repeated utilization and the like. But steel construction engineering is general that the volume is big, the structure is complicated, the installation accuracy is high, and its installation accuracy directly influences the aesthetic measure of follow-up building outward appearance, even building structure's security, and unwrapping wire measurement in traditional sense is multiple single-point location, and the limited repeated measurement of measurement, correction of measuring point need waste a large amount of manpower and materials and inefficiency, progress are slow.
Disclosure of Invention
Aiming at the prior art, the invention provides a large-space curved surface steel structure roof installation and positioning method.
The invention provides a method for installing and positioning a large-space curved steel structure roof, which comprises the following steps:
step 1, arranging a measurement control network and establishing control points;
step 2, deepening a steel structure construction drawing, and establishing a BIM three-dimensional model;
step 3, determining the installation and construction sequence of the steel structure;
step 4, positioning and temporarily welding by a conventional measuring instrument;
step 5, performing entity digital scanning modeling by a three-dimensional laser scanner;
step 6, overlapping the BIM model and the point cloud model, and analyzing the 3D deviation to generate an installation error of each component;
and 7, carrying out targeted correction based on component deviation conditions, and finally welding the steel components.
Preferably, in step 1, the control point plane coordinates are measured by using high-precision total station wires, and the control point elevation is measured by using an electronic level according to a closed level route.
Preferably, in step 2, the building a BIM three-dimensional model is a high-precision model, and the model precision is LOD300 or more.
Preferably, in the step 3, the installation sequence of the steel structure follows the installation principle of firstly overall and then local, and controlling the low precision with high precision.
Preferably, in step 5, the measuring stations are arranged in the visual field open area to avoid excessive station arrangement, one scanning cluster does not exceed 4 stations, the targets are arranged in the middle of 2 scanning measuring stations, the number of the measuring stations is not less than 3, and three points are ensured to be in different planes.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a large-space curved surface steel structure roof installation positioning method, which effectively combines BIM and three-dimensional laser scanning technology in traditional construction measurement, and shows the characteristics and advantages of the BIM and three-dimensional laser scanning technology, so that measurement work can be performed more accurately, efficiently and safely. The method is applied to the installation and positioning construction of the large-space curved surface steel structure roof, ensures the installation and positioning precision of the large-space curved surface steel structure roof, avoids a series of problems of unaesthetic follow-up construction, unsafe structure and the like, and brings remarkable benefits to engineering construction.
Detailed Description
The invention is further described in connection with the following embodiments in order to make the technical means, the creation features, the achievement of the purpose and the effect of the invention easy to understand.
Examples
A method for installing and positioning a large-space curved steel structure roof comprises the following steps:
step 1, construction site investigation is carried out, a control point layout control network is manufactured in combination with actual conditions, a high-precision total station is utilized for conducting wire measurement adjustment to obtain control point plane coordinates, an electronic level is utilized for measuring control point elevation coordinates according to a closed level route, and control point retesting is carried out regularly strictly according to relevant standard specifications.
And 2, deepening a steel structure construction drawing, and establishing a BIM three-dimensional model. The deepening is mainly based on tekla and assisted in the combination of AutoCAD. Determining component sectional positioning, groove design, weld shrinkage, quantitative compensation of mounting deformation and the like according to the total design description and the technical detail requirements of the construction blueprint, and matching with drawings of on-site assembly welding, such as groove direction, connecting plates, rib penetrating holes and the like; in the design process, the components are segmented by combining comprehensive factors such as manufacturing, transportation, installation and other related professions, and the normal operation of various working procedures such as processing, transportation and installation is matched.
And 3, determining the installation and construction sequence of the steel structure, namely, installing the W-shaped curved surface steel structure roof, wherein the steel structure installation sequence comprises the steps of hoisting primary bifurcation columns of the large curved surface steel structure, hoisting secondary bifurcation columns, hoisting edge-sealing steel beams of the roof, hoisting inner ring partition steel beams, installing through steel beams, installing embedded steel beams, and installing tertiary bifurcation columns of the large curved surface steel structure.
And 4, positioning and temporarily welding by a conventional measuring instrument, and obtaining the three-dimensional coordinates and the posture of each steel member of the curved roof by building a BIM model in the deepening process of the steel structure construction drawing. And 4, 5, 6 and 7, taking the installation of the edge sealing steel beam of the steel roof in the step 3 as an example, and the installation sequence of other steel components is identical. And measuring a plurality of coordinates of the edge-sealed steel beam by using a total station and a level meter, and performing temporary welding fixation by adopting a horse plate and a gantry bracket after the line shape is controlled.
And 5, performing entity digital scanning modeling by the three-dimensional laser scanner, wherein the problem of station setting of the three-dimensional laser scanner is considered in the early stage of arrangement of the control network, so that the target ball is directly arranged on a control point position planned in advance, and the working efficiency of field industry is improved under the condition of ensuring the point cloud splicing accuracy. After the field work is processed, data is imported into the Cyclone software to perform internal data processing and model establishment, firstly, data splicing is performed according to target coordinate values, then scanning noise and shielding are removed, and finally, a point cloud data model of the whole steel structure area is obtained through point cloud thinning and smoothing.
And 6, leading the point cloud model and the BIM model into Geomagic Control software, overlapping the BIM model and the point cloud model by adopting N-point alignment, best fitting alignment or unified coordinate system alignment and other modes, automatically calculating data such as average deviation, standard deviation and RMS estimated value by the software through inputting parameters such as an up-down deviation critical value, a chromatographic color section and the like, drawing a 3D comparison chromatographic analysis chart, automatically generating a 3D comparison analysis report, and analyzing the installation error of each component.
And 7, carrying out targeted correction on the basis of component deviation conditions on site, and finally welding the steel components.
The foregoing is merely an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalents thereof, which are used in other related technical fields directly or indirectly, are equally within the scope of the present invention.
Claims (5)
1. The method for installing and positioning the large-space curved-surface steel structure roof is characterized by comprising the following steps of:
step 1, arranging a measurement control network and establishing control points;
step 2, deepening a steel structure construction drawing, and establishing a BIM three-dimensional model;
step 3, determining the installation and construction sequence of the steel structure;
step 4, positioning and temporarily welding by a conventional measuring instrument;
step 5, performing entity digital scanning modeling by a three-dimensional laser scanner;
step 6, overlapping the BIM model and the point cloud model, and analyzing the 3D deviation to generate an installation error of each component;
and 7, carrying out targeted correction based on component deviation conditions, and finally welding the steel components.
2. The method for installing and positioning the large-space curved steel structure roof according to claim 1, wherein in the step 1, the control point plane coordinates are measured by using high-precision total station wires, and the control point heights are measured by using an electronic level according to a closed level route.
3. The method for installing and positioning the large-space curved steel structure roof according to claim 1 or 2, wherein in the step 2, the building BIM three-dimensional model is a high-precision model, and the model precision is LOD300 or more.
4. The method for installing and positioning the large-space curved steel structure roof according to claim 1 or 2, wherein in the step 3, the steel structure installation sequence follows an installation principle of firstly wholly and then locally controlling low precision with high precision.
5. The method for installing and positioning the large-space curved steel structure roof according to claim 1 or 2, wherein in the step 5, the measuring stations are arranged in the wide-field area to avoid excessive stations, one scanning cluster does not exceed 4 stations, the targets are arranged in the middle of 2 scanning measuring stations, the number of the targets is not less than 3, and the three points are ensured to be in different planes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311320634.0A CN117489024A (en) | 2023-10-12 | 2023-10-12 | Large-space curved surface steel structure roof installation positioning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311320634.0A CN117489024A (en) | 2023-10-12 | 2023-10-12 | Large-space curved surface steel structure roof installation positioning method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117489024A true CN117489024A (en) | 2024-02-02 |
Family
ID=89681825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311320634.0A Pending CN117489024A (en) | 2023-10-12 | 2023-10-12 | Large-space curved surface steel structure roof installation positioning method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117489024A (en) |
-
2023
- 2023-10-12 CN CN202311320634.0A patent/CN117489024A/en active Pending
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