CN112417564A - Segment beam prefabrication construction monitoring method based on three-dimensional laser scanning and BIM technology - Google Patents
Segment beam prefabrication construction monitoring method based on three-dimensional laser scanning and BIM technology Download PDFInfo
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- 238000009417 prefabrication Methods 0.000 title claims abstract description 21
- 238000005516 engineering process Methods 0.000 title claims abstract description 17
- 238000004873 anchoring Methods 0.000 claims abstract description 13
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Abstract
The invention discloses a section beam prefabrication construction monitoring method based on three-dimensional laser scanning and BIM technology, which comprises the following specific steps: the method comprises the steps of establishing a point cloud data model through three-dimensional laser scanning, establishing a Building Information (BIM) model, comparing the point cloud data model with the BIM model, verifying construction precision, and adjusting the manufacturing size of the next adjacent section beam according to the construction precision. The invention applies the three-dimensional laser scanning and BIM scanning technology to the construction monitoring of the segmental beam by the short line method, and carries out fine detection and monitoring on the segmental beam construction. The monitoring method can detect the precision of all the detailed structure dimensions of the external structure, the internal structure, the steering block, the anchoring block, the shear key tooth block and the diaphragm plate of the segmental beam, and adjust the manufacturing dimension of the next adjacent segmental beam according to the detection result, thereby avoiding the accumulation of construction errors and ensuring the precision of the prefabrication processing of the segmental beam.
Description
Technical Field
The invention belongs to the technical field of bridge engineering, and particularly relates to a monitoring method for segment beam short-line method prefabrication construction.
Background
For prefabricated assembled bridges, the accuracy control of the prefabrication construction of the segmental beams is a key and difficult problem of construction quality, and the construction accuracy of each segmental beam is an important guarantee for guaranteeing the integral assembling accuracy of the main beam.
A traditional method for controlling the prefabrication construction precision of a segmental beam by a short line method mainly uses measuring equipment such as a total station, a level gauge, a steel tape and the like to measure and control individual control points of the prefabricated segmental beam. The monitoring method can only carry out rough monitoring on the top surface, the end surface and the height of the sectional beam, and cannot carry out quick and accurate measurement and control on each structure and each detailed dimension of the sectional beam, which is incomplete and incomplete for the accuracy control of the sectional beam.
Therefore, it is necessary to develop a method capable of performing fine construction monitoring on the section beam, rapidly, comprehensively and accurately detecting the section beam short-line prefabrication construction precision, and providing a precision control scheme according to the detection result.
Disclosure of Invention
The invention aims to avoid the defects of the existing construction monitoring technology and provides a section beam prefabrication construction monitoring method based on three-dimensional laser scanning and BIM technology.
The method for monitoring the segment beam prefabrication construction is established by using three-dimensional laser scanning and BIM technology, the segment beam prefabrication construction is detected and monitored, the detection density, efficiency and precision can be greatly improved, and the construction monitoring measures are more comprehensive and accurate.
In order to achieve the above purpose, the invention adopts the technical scheme that:
a segment beam prefabrication construction monitoring method based on three-dimensional laser scanning and BIM technology comprises the following steps:
a. scanning a prefabricated first segment beam by using a three-dimensional laser scanner and automatically photographing to obtain first segment beam point cloud data, and establishing a first segment beam point cloud data model;
b. building Information (BIM) models of the first section beams;
c. comparing the point cloud data model of the first segment beam with the BIM model of the first segment beam, and verifying the construction precision;
d. using the first section beam as a matched beam section and serving as an end template, prefabricating a next adjacent section beam, and if the construction deviation of the section beam meets the requirement, directly prefabricating the next adjacent section beam; if the construction deviation of the section of beam is large, the manufacturing size of the next adjacent section of beam is adjusted and then prefabricated, so that the line shape of the bridge meets the design requirement;
e. building a BIM model of the adjacent section beams according to the adjusted sizes of the adjacent section beams;
f. and (4) detecting the construction precision of the prefabricated adjacent sections, repeating the steps in such a way, and prefabricating the next adjacent section beam until all section beams are manufactured.
Preferably, in the step a, the point cloud data includes all construction details of the external structure, the internal structure, the steering block, the anchoring block, the shear key tooth block and the diaphragm of the segment beam; the photographing is automatically completed by the three-dimensional laser scanner, and aims to render a scanning result and realize live-action restoration; the point cloud data model is formed by post-processing means of noise reduction, registration, splicing and rendering of point cloud data.
Further preferably, in the step b, the modeling method for establishing the Building Information (BIM) model of the first segment beam is to establish a parameterized family of all members of the first segment beam by using Revit software, and then establish the BIM model of the first segment beam through the member family.
Preferably, in step c, the comparison between the two models is realized by feature point matching; the construction precision not only comprises the precision of the geometric dimensions of the external structure and the internal structure of the segmental beam, but also comprises the precision of the dimensions of all the detailed structures of the segmental beam steering block, the anchoring block, the shear key tooth block and the diaphragm plate.
Preferably, in the step d, the adjustment of the manufacturing dimension includes the external structural dimension and the internal structural dimension of the segmental beam, and the dimensions of all construction details of a steering block, an anchoring block, a shear key tooth block and a diaphragm plate; the linear design requirements of the bridge comprise geometric dimensions of the top surface along the bridge direction and the transverse bridge direction, the levelness of the top surface, the perpendicularity of the end surface and the height of the beam.
Preferably, in step e, the specific content and method of building the BIM model of the adjacent section beam need to be adjusted correspondingly according to the actual measurement result of the previous section beam and the adjustment of the section beam size; the adjustment is realized by changing the parameters of the component family.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention provides a method for detecting the geometric dimension of a segmental beam, which is characterized in that a three-dimensional laser scanner is used for scanning the prefabricated segmental beam, so that the geometric dimensions of all construction details of an external structure, an internal structure, a steering block, an anchoring block, a shear key tooth block and a diaphragm plate of a segmental beam highway segment can be rapidly, comprehensively and accurately detected in an all-around manner.
2. The invention provides a method for monitoring the prefabrication precision of a section beam by using three-dimensional laser scanning and BIM technology, which can clearly know the construction precision of each detail by comparing a point cloud data model scanned by a three-dimensional laser scanner with a BIM model of the section beam, thereby determining whether the next adjacent section beam needs to be adjusted and the size and method of the adjustment, and realizing the monitoring of the prefabrication construction precision of the section beam by a short-line method.
3. The invention provides a method for adjusting the prefabricated size of a section beam by using three-dimensional laser scanning and BIM technology, which adjusts the positions and the geometric sizes of all construction details of an external structure, an internal structure, a steering block, an anchoring block, a shear key tooth block and a diaphragm plate of a next adjacent section beam according to the comparison result of a point cloud data model and a BIM model of the section beam, and realizes the omnibearing monitoring of the prefabricated section beam.
Drawings
Fig. 1 is a schematic view of monitoring construction of a sectional beam according to the present invention.
In the figure, 1 is a sectional beam; 2 adjacent segment beams; 3 is the joint surface of two adjacent sections of beams; 4. 5, 6 and 7 are control points; 8 is a segment beam end face; and 9 is a section beam top surface.
Detailed Description
The present invention is further illustrated by the following figures and specific examples, which are to be understood as illustrative only and not as limiting the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.
Example (b):
as shown in fig. 1, the method for monitoring the prefabrication construction of the segmental beam based on the three-dimensional laser scanning and the BIM technology comprises the following steps:
a. and scanning the prefabricated section beam 1 by using a three-dimensional laser scanner and automatically photographing to obtain point cloud data of all construction details of the external structure, the internal structure, the steering block, the anchoring block, the shear key tooth block and the diaphragm of the section beam 1. Point cloud data is post-processed by using point cloud data software, noise points are deleted, scanning results of different stations are registered and spliced, a shot photo is led into the point cloud data to be rendered, a live-action graph is formed, and a segment beam 1 point cloud data model is established;
b. establishing a parameterization family of all components of an external structure, an internal structure, a steering block, an anchoring block, a shear key tooth block and a diaphragm plate of the segmental beam 1 by using Revit software, and establishing a Building Information (BIM) model of the segmental beam 1 by setting the size of the component family according to a design drawing;
c. selecting control points 4, 5, 6 and 7 on the segmental beam 1 as characteristic points, matching and comparing the point cloud data model of the segmental beam 1 with the BIM model, and verifying the accuracy of all the detail structure dimensions of the external structure, the internal structure, the steering block, the anchoring block, the shear key tooth block and the diaphragm of the segmental beam 1.
d. And (3) prefabricating the next adjacent section beam 2 by taking the section beam 1 as a matched beam section and serving as an end template. If the construction deviation of the sectional beam 1 meets the requirement, directly prefabricating the next adjacent sectional beam 2; if the construction deviation of the segmental beam 1 is large, the positions and the geometric dimensions of all the construction details of the next adjacent segmental beam 2 are adjusted and then prefabricated, so that the bridge line shape meets the design requirements of the segmental beam top surface 9 along the bridge direction and the transverse bridge direction, the segment beam top surface 9 levelness, the end surface 8 verticality, the segment beam height and the adjacent two-segment beam interface 3;
e. establishing a BIM model of the next adjacent section beam 2 by changing parameters of a component family according to the adjusted positions and geometric dimensions of all detail structures of the external structure, the internal structure, the steering block, the anchoring block, the shear key tooth block and the diaphragm plate of the next adjacent section beam 2;
f. prefabricating the next adjacent section beam 2, comparing the prefabricated next adjacent section beam 2 with the BIM model of the next adjacent section beam 2, detecting the construction precision, repeating the steps, and prefabricating the next adjacent section beam 2 until all section beams are manufactured.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (6)
1. A segment beam prefabrication construction monitoring method based on three-dimensional laser scanning and BIM technology is characterized by comprising the following steps:
a. scanning a prefabricated first segment beam by using a three-dimensional laser scanner and automatically photographing to obtain first segment beam point cloud data, and establishing a first segment beam point cloud data model;
b. building Information (BIM) models of the first section beams;
c. comparing the point cloud data model of the first segment beam with the BIM model of the first segment beam, and verifying the construction precision;
d. using the first section beam as a matched beam section and serving as an end template, prefabricating a next adjacent section beam, and if the construction deviation of the section beam meets the requirement, directly prefabricating the next adjacent section beam; if the construction deviation of the section of beam is large, the manufacturing size of the next adjacent section of beam is adjusted and then prefabricated, so that the line shape of the bridge meets the design requirement;
e. building a BIM model of the adjacent section beams according to the adjusted sizes of the adjacent section beams;
f. and (4) detecting the construction precision of the prefabricated adjacent sections, repeating the steps in such a way, and prefabricating the next adjacent section beam until all section beams are manufactured.
2. The segment beam prefabrication construction monitoring method based on the three-dimensional laser scanning and BIM technology as claimed in claim 1, wherein: in the step a, the point cloud data comprises point cloud data of all construction details of an external structure, an internal structure, a steering block, an anchoring block, a shear key tooth block and a diaphragm of a sectional beam; the photographing is automatically completed by the three-dimensional laser scanner, and aims to render a scanning result and realize live-action restoration; the point cloud data model is formed by post-processing means of noise reduction, registration, splicing and rendering of point cloud data.
3. The segment beam prefabrication construction monitoring method based on the three-dimensional laser scanning and BIM technology as claimed in claim 1, wherein: in the step b, the modeling method for establishing the Building Information (BIM) model of the first section beam is to establish a parameterization family of all members of the first section beam by adopting Revit software and then establish the BIM model of the first section beam through the member family.
4. The segment beam prefabrication construction monitoring method based on the three-dimensional laser scanning and BIM technology as claimed in claim 1, wherein: in the step c, the comparison of the two models is realized by matching the feature points; the construction precision not only comprises the precision of the geometric dimensions of the external structure and the internal structure of the segmental beam, but also comprises the precision of the dimensions of all the detailed structures of the segmental beam steering block, the anchoring block, the shear key tooth block and the diaphragm plate.
5. The segment beam prefabrication construction monitoring method based on the three-dimensional laser scanning and BIM technology as claimed in claim 1, wherein: in the step d, the adjustment of the manufacturing size comprises the external structure size and the internal structure size of the segmental beam, and the sizes of all construction details of a steering block, an anchoring block, a shear key tooth block and a diaphragm plate; the linear design requirements of the bridge comprise geometric dimensions of the top surface along the bridge direction and the transverse bridge direction, the levelness of the top surface, the perpendicularity of the end surface and the height of the beam.
6. The segment beam prefabrication construction monitoring method based on the three-dimensional laser scanning and BIM technology as claimed in claim 1, wherein: in the step e, the specific content and method for establishing the BIM model of the adjacent section beam need to be correspondingly adjusted according to the actual measurement result of the previous section beam and the adjustment of the dimension of the section beam; the adjustment is realized by changing the parameters of the component family.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113239429A (en) * | 2021-04-26 | 2021-08-10 | 河南省交通规划设计研究院股份有限公司 | Method for manufacturing precast assembled bridge of concrete segments |
| CN113628177A (en) * | 2021-07-29 | 2021-11-09 | 北京好运达智创科技有限公司 | Double-layer beam storage detection system for beam body |
| CN113977750A (en) * | 2021-11-26 | 2022-01-28 | 中交二航局第四工程有限公司安徽混凝土装配化构件分公司 | Process for quickly disassembling and assembling integrated section beam steering block template |
| CN114086467A (en) * | 2021-11-24 | 2022-02-25 | 中铁四局集团第五工程有限公司 | Prefabricated installation construction method for steel-concrete composite beam bridge deck |
| CN114549780A (en) * | 2022-01-27 | 2022-05-27 | 重庆大学 | Point cloud data-based intelligent detection method for large complex component |
| CN114577141A (en) * | 2022-01-29 | 2022-06-03 | 中国建筑第八工程局有限公司 | Method for optimizing surface measurement of curved surface template based on three-dimensional laser scanning technology |
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| CN115659470A (en) * | 2022-11-01 | 2023-01-31 | 中交一公局第七工程有限公司 | Assembling method, system and application of prefabricated assembled bridge based on BIM concrete segments |
| JP7412864B2 (en) | 2021-04-20 | 2024-01-15 | 日本高圧コンクリート株式会社 | Construction method of concrete structure using precast segments |
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| CN114086467A (en) * | 2021-11-24 | 2022-02-25 | 中铁四局集团第五工程有限公司 | Prefabricated installation construction method for steel-concrete composite beam bridge deck |
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| CN114577141A (en) * | 2022-01-29 | 2022-06-03 | 中国建筑第八工程局有限公司 | Method for optimizing surface measurement of curved surface template based on three-dimensional laser scanning technology |
| CN115618472A (en) * | 2022-10-27 | 2023-01-17 | 中交一公局第七工程有限公司 | Engineering structure digital pre-assembly method and system based on BIM model and application |
| CN115618472B (en) * | 2022-10-27 | 2024-05-14 | 中交一公局第七工程有限公司 | Engineering structure digital pre-assembly method, system and application based on BIM model |
| CN115659470A (en) * | 2022-11-01 | 2023-01-31 | 中交一公局第七工程有限公司 | Assembling method, system and application of prefabricated assembled bridge based on BIM concrete segments |
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