A method for locating structural columns and reserved holes based on BIM and 3D scanning

Abstract

This application relates to a method for locating structural columns and reserved holes based on BIM and 3D scanning, comprising the following specific steps: S1. Performing 3D scanning on the existing structure to obtain project point cloud data; S2. Obtaining the final structural model; S3. Obtaining the location data of structural columns and reserved holes; S4. Setting up a layout robot based on project base points and measurement points, importing the location data of structural columns and reserved holes into the layout robot for positioning and marking of structural columns and reserved holes, and completing building layout and construction based on the marked positioning points. This invention can resolve design conflicts between various disciplines based on BIM, and accurately locate the actual positions of structural columns and reserved holes by combining 3D scanning and layout, avoiding rework caused by conflicts between the positions of structural columns and reserved holes and pipelines during actual construction.

Description

Technical Field

[0001] This application relates to a method for locating structural columns and reserved holes, specifically a method for locating structural columns and reserved holes based on BIM + 3D scanning. Background Technology

[0002] Currently, BIM technology has been widely used in the design phase, and 3D scanning has also played a certain role in various fields. However, the positioning of structural columns and reserved holes during construction is still not accurate enough. There are certain deviations based on the experience of different construction personnel, which leads to collisions between pipelines and structural columns and holes in later construction. Summary of the Invention

[0003] The purpose of this application is to provide a BIM+3D scanning-based method for locating structural columns and reserved holes, which can assist in guiding building layout, accurately locate the actual positions of structural columns and reserved holes, avoid rework caused by conflicts between the positions of structural columns and reserved holes and pipelines, reduce costs, and improve construction efficiency.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] This application provides a method for locating structural columns and reserved holes based on BIM and 3D scanning, including the following specific steps:

[0006] S1. Perform a 3D scan of the existing structure to obtain the point cloud data of the project;

[0007] S2. Establish a modeling template according to enterprise standards and create a BIM model based on construction drawings. Import the point cloud data obtained from 3D scanning into point cloud processing software, compare the point cloud data model with the BIM model, identify differences or conflicts, and modify to obtain the final BIM model;

[0008] S3. Create building and pipeline models based on architectural drawings and integrated pipeline drawings, and adjust the pipeline and prefabricated pipe segments to obtain the final pipeline model. Adjust the positions of building structural columns and reserved holes based on the final pipeline model to obtain structural column and reserved hole location data.

[0009] S4. Set up a layout robot based on the project's base points and measurement points, import the data of the structural columns and reserved holes into the layout robot to locate and mark the structural columns and reserved holes, and complete the building layout and construction based on the marked locations.

[0010] In step S1, three initial scanning reference points p1, p2, and p3, and subsequent regional scanning reference points p4, p5, and p6 are set at the construction site. The scanning position and accuracy of the 3D scanner are set according to the initial scanning reference points and subsequent regional scanning reference points, and regional scanning is performed. The next regional scanning reference points p7, p8, and p9 are set, and the 3D scanner is moved to the next region. The 3D scanner is set according to p4, p5, p6, p7, p8, and p9, and regional scanning is performed. The above work is repeated to obtain the project point cloud data.

[0011] In step S2, according to the company's standards, a standardized template for the building information model is created in a consistent and efficient manner by setting software parameters, element templates, and view settings. The north / south, east / west coordinates and elevation of the project are obtained from the construction drawings. A virtual coordinate origin is set in the project as the project base point. The BIM model is established by linking the CAD drawings as a reference. The point cloud model formed by the processed point cloud data is compared with the model to identify differences or conflicts and is modified to the final BIM model.

[0012] In step S3, a building and pipeline model is created in the existing structural model based on the building drawings and integrated pipeline drawings. The pipeline is adjusted and prefabricated pipe segments are divided to obtain the final pipeline model. The positions of the building structural columns and reserved holes are adjusted according to the final pipeline model. The midpoint mapping coordinates of the structural columns and reserved holes are set in the model to obtain the mapping point data of the structural columns and reserved holes.

[0013] In step S4, the layout robot uses laser to locate the position of each structural column based on the project base point, measurement point and structural column coordinate point. It uses laser to locate the longitudinal and transverse points in the structural surface based on the reserved hole mapping point data. It assists in completing the building layout and construction of building walls and structural columns based on the structural column marking points. It determines the midpoint of the reserved opening based on the longitudinal and transverse points in the structural surface and makes the opening reservation.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This application can resolve design conflicts between various disciplines based on BIM, and accurately locate the actual positions of structural columns and reserved holes by combining 3D scanning and layout, thereby avoiding rework caused by conflicts between the positions of structural columns and reserved holes and pipelines during actual construction. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a flowchart of the method of the present invention.

[0018] Figure 2 This is a schematic diagram of a 3D scan.

[0019] Figure 3 A schematic diagram of the mapping point for the reserved hole. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] The terms “first,” “second,” etc., are used only to distinguish one entity or operation from another, and should not be construed as indicating or implying relative importance, nor as requiring or implying any such actual relationship or order between these entities or operations.

[0023] like Figure 1 As shown, the present invention provides a technical solution:

[0024] Please see Figure 1 A method for locating structural columns and reserved holes based on BIM and 3D scanning includes the following specific steps:

[0025] S1. Perform a 3D scan of the existing structure to obtain the point cloud data of the project;

[0026] S2. Establish a modeling template according to enterprise standards and create a BIM model based on construction drawings. Import the point cloud data obtained from 3D scanning into point cloud processing software, compare the point cloud data model with the BIM model, identify differences or conflicts, and modify to obtain the final BIM model;

[0027] S3. Create building and pipeline models based on architectural drawings and integrated pipeline drawings, and adjust the pipeline and prefabricated pipe segments to obtain the final pipeline model. Adjust the positions of building structural columns and reserved holes based on the final pipeline model to obtain structural column and reserved hole location data.

[0028] S4. Set up a layout robot based on the project's base points and measurement points, import the data of the structural columns and reserved holes into the layout robot to locate and mark the structural columns and reserved holes, and complete the building layout and construction based on the marked locations.

[0029] Furthermore, in step S1, three initial scanning reference points p1, p2, and p3, and subsequent area scanning reference points p4, p5, and p6 are set at the construction site. Based on these initial and subsequent area scanning reference points, the scanning position and accuracy of the 3D scanner are set, and area scanning is performed. Then, the next area scanning reference points p7, p8, and p9 are set, and the 3D scanner is moved to the next area. Based on p4, p5, p6, p7, p8, and p9, the 3D scanner is set, and area scanning is performed. This process is repeated to obtain the project point cloud data as shown below. Figure 2 .

[0030] In step S2, based on the company's standards, a standardized template for the Building Information Model (BIM) is created by setting software parameters, element templates, and view settings to maintain consistency and improve efficiency. The north / south, east / west coordinates and elevation of the project are obtained from the construction drawings. A virtual coordinate origin is set in the project as the project base point, and the BIM model is established by linking CAD drawings as a reference. The point cloud model formed by the processed point cloud data is compared to identify differences or conflicts. Based on the development standards of the BIM data model, the BIM model is used to share building information modification and synchronization data between different BIM software until the final BIM model is achieved.

[0031] In step S3, a building and pipeline model is created in the existing structural model based on the building drawings and integrated pipeline drawings. The pipeline is adjusted and prefabricated pipe segments are divided to obtain the final pipeline model. The positions of the building structural columns and reserved holes are adjusted according to the final pipeline model. The midpoint mapping coordinates of the structural columns and reserved holes are set in the model to obtain the mapping point data of the structural columns and reserved holes.

[0032] In step S4, an open-source platform for robot development is set up based on the project baseline and measurement points, providing various control and path planning algorithms for the robot's autonomous navigation. Based on the on-site path planning algorithms and sensor functions, the robot is ensured to move safely to the designated location. The three-dimensional coordinates (X, Y, Z) of the structural columns and reserved holes are imported into the layout robot for positioning and marking. The layout robot uses laser to locate each structural column based on the project baseline, measurement points, and structural column coordinates. Based on the reserved hole mapping data, it uses laser to locate the coordinates (X, Y, Z) of the structural surface. The marked structural column positions assist in completing the building layout and constructing the building walls and structural columns. The midpoint of the reserved opening is determined at the coordinates (X, Y, Z) of the structural surface to ensure on-site accuracy. Figure 3 As shown.

[0033] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for locating structural columns and reserved holes based on BIM + 3D scanning, characterized in that, The specific steps include the following: S1. Perform a 3D scan of the existing structure to obtain the point cloud data of the project; S2. Establish a modeling template according to enterprise standards, build a BIM model according to construction drawings, import the point cloud data obtained from 3D scanning into point cloud processing software, compare the point cloud data model with the BIM model, identify differences or conflicts, and modify to obtain the final BIM model. S3. Create building and pipeline models based on architectural drawings and integrated pipeline drawings, and adjust the pipeline and prefabricated pipe segments to obtain the final pipeline model. Adjust the positions of building structural columns and reserved holes based on the final pipeline model to obtain structural column and reserved hole location data. S4. Set up a layout robot based on the project's base points and measurement points, import the data of the structural columns and reserved holes into the layout robot to locate and mark the structural columns and reserved holes, and complete the building layout and construction based on the marked locations. In step S1, three initial scanning reference points p1, p2, and p3, and subsequent regional scanning reference points p4, p5, and p6 are set at the construction site. The scanning position and accuracy of the 3D scanner are set according to the initial scanning reference points and subsequent regional scanning reference points, and regional scanning is performed. The next regional scanning reference points p7, p8, and p9 are set, and the 3D scanner is moved to the next region. The 3D scanner is set according to p4, p5, p6, p7, p8, and p9, and regional scanning is performed. The above work is repeated to obtain the project point cloud data. In step S2, according to the company's standards, a standardized template for the building information model is created by setting software parameters, element templates, and view settings in a consistent and efficient manner. The north / south, east / west coordinates and elevation of the project are obtained from the construction drawings. A virtual coordinate origin is set in the project as the project base point. The BIM model is established by linking CAD drawings as a reference. The point cloud model formed by the processed point cloud data is compared with the model to identify differences or conflicts and is modified to the final BIM model. In step S3, a building and pipeline model is created in the existing structural model based on the building drawings and integrated pipeline drawings. The pipeline is adjusted and prefabricated pipe segments are divided to obtain the final pipeline model. The positions of the building structural columns and reserved holes are adjusted according to the final pipeline model. The midpoint mapping coordinates of the structural columns and reserved holes are set in the model to obtain the mapping point data of the structural columns and reserved holes. In step S4, the layout robot uses laser to locate the position of each structural column based on the project base point, measurement point and structural column coordinate point. It uses laser to locate the longitudinal and transverse points in the structural surface based on the reserved hole mapping point data. It assists in completing the building layout and construction of building walls and structural columns based on the structural column marking points. It determines the midpoint of the reserved opening based on the longitudinal and transverse points in the structural surface and makes the opening reservation.

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