A main keel positioning method and a main keel positioning system

Abstract

The application provides a main keel positioning method and a main keel positioning system, which comprises the following steps: establishing a three-dimensional model of a main keel; establishing a three-dimensional scanning point cloud model of a constructed entity building; superimposing the three-dimensional model of the main keel and the three-dimensional scanning point cloud model of the constructed entity building to obtain an entity model; obtaining the coordinates of at least two reference points in the constructed entity building in the entity model; calculating the coordinates of at least two mark points on the main keel associated with the reference points according to the obtained coordinates of the reference points in the constructed entity building and the relationship between the reference points and the mark points; and marking the reference points and the mark points on the constructed entity building. The application can quickly and simply position the main keel.

Description

Technical Field

[0001] This invention relates to the field of glass curtain wall construction technology, and in particular to a main keel positioning method and a main keel positioning system. Background Technology

[0002] During construction, the main keel of a glass curtain wall is typically welded to the steel structure supporting it after the main building structure is completed. Before welding the main keel to the steel structure, it usually needs to be positioned.

[0003] Currently, a common method for positioning the main keel of a curtain wall is to first obtain the coordinates of the points to be measured from a BIM model created based on the design drawings, then reduce the coordinates from a three-dimensional (X / Y / Z) solid to a two-dimensional (X / Y) plane (i.e., temporarily disregarding the Z-value, which is the height), and then determine and mark the X and Y values ​​on the floor or ground plane. A laser plumb line is then used to mark the Z-value (height) points. After determining the position, auxiliary angle steel is welded for temporary positioning. Once the upper and lower parts of the main keel are positioned, the main keel is welded into place. However, this method requires measuring the X and Y values ​​first, and then the Z-value. At least two measurements are needed for each main keel installation point, resulting in a large workload, slow positioning speed, and low efficiency.

[0004] Another common method for positioning the main keel of a curtain wall is to use a 3D total station for construction layout. The curtain wall BIM model is imported into the 3D total station, and the points to be laid out are set and the lines are automatically laid out. However, this method of positioning the main keel of a curtain wall is not suitable for situations where the main keel is far from the main structure of the building. This is mainly because the prism is placed in an open position, and personnel cannot reach the measurement position of the main structure of the building using traditional methods such as suspended platforms and ropes. Therefore, the operation is difficult, resulting in slow positioning speed and low efficiency of the main keel. Summary of the Invention

[0005] The purpose of this invention is to provide a main keel positioning method and a main keel positioning system to solve the problem of slow main keel positioning speed in existing systems.

[0006] To address the aforementioned technical problems, this invention provides a main keel positioning method, comprising: establishing a three-dimensional model of the main keel; establishing a three-dimensional scanned point cloud model of an already constructed physical building; overlaying the three-dimensional model of the main keel with the three-dimensional scanned point cloud model of the already constructed physical building to obtain a physical model; obtaining the coordinates of at least two reference points in the already constructed physical building in the physical model; calculating the coordinates of a marker point by using the obtained coordinates of the reference points in the already constructed physical building and the relationship between the reference points and at least two marker points on the main keel associated with the reference points; and marking the reference points and marker points on the already constructed physical building.

[0007] Optionally, when creating the 3D model of the main keel, the 3D model of the main keel can be created based on BIM.

[0008] Optionally, establishing a 3D scanning point cloud model of an already constructed physical building includes: scanning the 3D spatial location of the already constructed physical building using a 3D laser scanner to obtain 3D scanning point cloud data; processing the 3D scanning point cloud data; and establishing a 3D scanning point cloud model based on the processed 3D scanning point cloud data.

[0009] Optionally, overlaying the 3D model of the main keel component with the 3D scanned point cloud model of the already constructed solid building to obtain a solid model includes: importing the 3D scanned point cloud model and the 3D model of the main keel into BIM; aligning the 3D scanned point cloud model and the 3D model of the main keel based on the same coordinate system; replacing the building structure to which the main keel is attached in the 3D model of the main keel with the corresponding part of the building structure to which the main keel is attached in the 3D scanned point cloud model, so that the main keel is attached to the 3D scanned point cloud model to obtain a solid model.

[0010] Optionally, the coordinates of at least two reference points in the constructed solid building in the solid model are obtained. The coordinates of the marker points are calculated by using the coordinates of the reference points in the constructed solid building and the relationship between the reference points and at least two marker points on the main keel associated with the reference points. This includes: constructing a section in the solid model drawing that is flush with the surface of each beam and slab; obtaining the coordinates of the first reference point and the second reference point on the extension line connecting the first marker point and the second marker point on the main keel on the surface of the beam and slab on the section; and calculating the coordinates of the first marker point and the second marker point on the main keel using the first reference point and the second reference point.

[0011] Optionally, the distance between the first marker point and the second marker point is equal to the distance between the first reference point and the second reference point.

[0012] Optionally, marking reference points and marker points on the constructed physical building includes: marking a first reference point and a second reference point on the constructed physical building; aligning the angle steel marked with the first reference point and the second reference point, as well as the first marker point and the second marker point, with the first reference point and the second marker point on the constructed physical building; and welding the angle steel to the beam plate.

[0013] The present invention also provides a main keel positioning system, comprising: a three-dimensional model building device for building a three-dimensional model of the main keel; a point cloud model building device for building a three-dimensional scanned point cloud model of an already constructed physical building; an overlay device for overlaying the three-dimensional model of the main keel with the three-dimensional scanned point cloud model of the already constructed physical building to obtain a physical model; a calculation device for acquiring the coordinates of at least two reference points in the already constructed physical building in the physical model, and for calculating the coordinates of a marker point by means of the acquired coordinates of the reference points in the already constructed physical building and the relationship between the acquired coordinates of the reference points and at least two marker points on the main keel associated with the reference points; and a marking device for marking the reference points and marker points on the already constructed physical building.

[0014] Optionally, the computing device includes: a section creation device for constructing a section flush with the surface of each beam and slab in the solid model drawing; a reference point coordinate acquisition device for acquiring the coordinates of a first reference point and a second reference point on the extension line connecting the first and second marker points on the main keel of the beam and slab surface on the section; and a marker point coordinate calculation device for calculating the coordinates of the first and second marker points on the main keel using the first and second reference points.

[0015] Optionally, the marking device includes: a reference point marking device for marking a first reference point and a second reference point on the constructed physical building; an alignment device for aligning the angle steel marked with the first reference point and the second reference point, as well as the first and second marking points, with the first and second reference points on the constructed physical building; and an installation device for welding the angle steel to the beam plate.

[0016] The main keel positioning method and main keel positioning system provided by this invention have the following beneficial effects:

[0017] By establishing a 3D model of the main keel assembly and a 3D scanned point cloud model of the already constructed physical building, and then overlaying the 3D model of the main keel assembly with the 3D scanned point cloud model of the already constructed physical building to obtain a solid model, the relative positional relationship between the main keel to be constructed and the already constructed physical building can be obtained, thus providing a good positioning basis for the rapid positioning of the main keel. By obtaining the coordinates of at least two reference points of the already constructed physical building in the solid model, and by using the coordinates of the reference points of the already constructed physical building and the relationship between the obtained coordinates of the reference points of the already constructed physical building and at least two marker points on the main keel associated with the reference points, the coordinates of the marker points are calculated, and the reference points and marker points are marked on the already constructed physical building. In this way, the coordinates of the marker points can be calculated using the solid model, and the marked reference points and marker points can be used as references for the installation position of the main keel. Since the calculation of reference points and marker points can be obtained through the solid model, without the need for multiple measurements and calculations, the positioning speed and efficiency of the main keel can be improved. Attached Figure Description

[0018] Figure 1 This is a flowchart of the main keel positioning method in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of a cross section constructed in the solid model drawing that is flush with the surface of each layer of beams and slabs in an embodiment of the present invention;

[0020] Figure 3 This is an elevation view of each layer of beams, slabs, and main keel constructed in the solid model diagram in the embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 110 - Beam / slab; 120 - Keel. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] refer to Figure 1 , Figure 1 This is a flowchart of the main keel positioning method in an embodiment of the present invention. This embodiment provides a main keel positioning method, including:

[0030] Step S100: Establish a three-dimensional model of the main keel component;

[0031] Step S200: Establish a 3D scanned point cloud model of the already constructed physical building;

[0032] Step S300: Overlay the 3D model of the main keel component with the 3D scanned point cloud model of the already constructed physical building to obtain the physical model.

[0033] Step S400: Obtain the coordinates of at least two reference points in the constructed solid building in the solid model; calculate the coordinates of the marker points by using the coordinates of the reference points in the constructed solid building and the relationship between the reference points and at least two marker points on the main keel associated with the reference points.

[0034] Step S500: Mark reference points and marker points on the already constructed physical building.

[0035] By establishing a 3D model of the main keel assembly and a 3D scanned point cloud model of the already constructed physical building, and then overlaying the 3D model of the main keel assembly with the 3D scanned point cloud model of the already constructed physical building to obtain a solid model, the relative positional relationship between the main keel to be constructed and the already constructed physical building can be obtained, thus providing a good positioning basis for the rapid positioning of the main keel. By obtaining the coordinates of at least two reference points of the already constructed physical building in the solid model, and by using the coordinates of the reference points of the already constructed physical building and the relationship between the obtained coordinates of the reference points of the already constructed physical building and at least two marker points on the main keel associated with the reference points, the coordinates of the marker points are calculated, and the reference points and marker points are marked on the already constructed physical building. In this way, the coordinates of the marker points can be calculated using the solid model, and the marked reference points and marker points can be used as references for the installation position of the main keel. Since the calculation of reference points and marker points can be obtained through the solid model, without the need for multiple measurements and calculations, the positioning speed and efficiency of the main keel can be improved.

[0036] In step S100, a 3D model of the main keel component is typically created based on BIM. For example, it could be a Revit model of the main keel component. The main keel component includes the main keel and the building structure to which it is attached.

[0037] Step S200 includes:

[0038] Step S210: Use a 3D laser scanner to scan the 3D spatial positioning of the constructed physical building to obtain 3D scan cloud point data;

[0039] Step S220: Process the 3D scan point cloud data and establish a 3D scan point cloud model based on the processed 3D scan point cloud data.

[0040] Specifically, processing 3D scan point cloud data includes denoising, repairing, and stitching the data. Building a 3D scan point cloud model based on the processed data involves assigning a coordinate system to the model and compressing and converting the 3D scan data into a ReCap file.

[0041] Since three-dimensional scanning cloud data can be obtained simply by scanning the three-dimensional spatial positioning of the already constructed physical building with a three-dimensional laser scanner, and the scanning of the three-dimensional spatial positioning of the already constructed physical building by the three-dimensional laser scanner is not limited by the positional relationship between the main structure of the building and the main keel, three-dimensional scanning cloud data can be obtained quickly, providing a basis for the rapid positioning of the main keel.

[0042] Among them, the existing physical building can be the beams and slabs of each floor that have already been constructed, and the main keel can be the keel that will be installed on the existing physical building.

[0043] In step S300, the 3D model of the main keel is usually overlaid with the 3D scanned point cloud model of the already constructed physical building based on BIM to obtain the physical model.

[0044] Specifically, step S300 includes:

[0045] Step S310: Import the 3D scanned point cloud model and the 3D model of the main keel into BIM;

[0046] Step S320: Align the 3D scanned point cloud model and the 3D model of the main keel based on the same coordinate system;

[0047] Step S330: Replace the building structure to which the main keel is attached in the 3D model with the part of the 3D scanned point cloud model that corresponds to the building structure to which the main keel is attached, so that the main keel is attached to the 3D scanned point cloud model to obtain a solid model.

[0048] Step S400 includes:

[0049] Step S410: Construct a section in the solid model drawing that is flush with the surface of each beam and slab.

[0050] Step S420: Obtain the coordinates of the first reference point and the second reference point on the extension line connecting the first and second marker points on the main joist of the beam slab surface at this cross-section. Wherein, the reference... Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of a cross-section constructed in the solid model drawing in an embodiment of the present invention, which is flush with the surface of each layer of beams and slabs. Figure 3 This is an elevation view of each layer of beams and slabs and main keel constructed in the solid model diagram in the embodiment of the present invention. The first mark point A and the second mark point B are two corner points of the main keel on this section, and the extension lines of these two corner points intersect the beams and slabs. The first reference point C and the second reference point D are located on the beams and slabs and are located on the extension line of the line AB.

[0051] Step S430: Calculate the coordinates of the first and second marker points on the main keel using the first and second reference points.

[0052] By constructing a section flush with the surface of each beam and slab in the solid model drawing, and obtaining the coordinates of the first reference point and the second reference point on the extension line connecting the first and second marker points on the main joist of the beam and slab surface on this section, and calculating the coordinates of the first and second marker points on the main joist using the first and second reference points, the coordinates of the first and second marker points on the plane at the same height as the beam and slab can be calculated quickly and accurately. Since the actual height of the beam and slab is known, the three-dimensional coordinates of the first and second marker points can be obtained quickly and accurately, thus enabling the main joist to be positioned quickly and accurately.

[0053] Preferably, in step S420, the distance between the first marker point and the second marker point is equal to the distance between the first reference point and the second reference point. This facilitates the calculation of the coordinates of the first marker point and the second marker point, and makes it easier to mark the first marker point and the second marker point during construction.

[0054] Step S500 includes:

[0055] Step S510: Mark the first reference point and the second reference point on the already constructed physical building;

[0056] Step S520: Align the angle steel marked with the first reference point and the second reference point, as well as the first and second reference points, with the first and second reference points on the already constructed solid building.

[0057] Step S530: Weld the angle steel to the beam plate.

[0058] In this way, the main keel can be positioned quickly and accurately using angle steel, and the angle steel welded to the beam can play a role in providing auxiliary support for the main keel.

[0059] In another embodiment, in step S400, the relationship between the first and second marker points, and between the first and second reference points, can be other relationships. For example, the first and second marker points can be two other corner points E and F on the main keel, and the shortest distances between these two corner points E and F and the edges of the beam slab are equal. The line connecting the first reference point G and the second reference point H can be parallel to the line connecting points E and F on the beam slab, and EF = GH. Furthermore, the line connecting the midpoint of the line connecting points E and F with the midpoint of the line connecting points G and H is perpendicular to EF and GH. Thus, the coordinates of the first marker point E and the second marker point F can be calculated firstly using the coordinates of the first reference point G and the second reference point H. In yet another embodiment, the coordinates of the first and second marker points can also be calculated for another type of first and second reference points based on the relationship between the first and second marker points.

[0060] This embodiment also provides a main keel positioning system, including:

[0061] A 3D model creation device is used to create a 3D model of the main keel.

[0062] Point cloud model building device, used to create a 3D scanned point cloud model of an already constructed physical building;

[0063] The overlay device is used to overlay the 3D model of the main keel with the 3D scanned point cloud model of the already constructed physical building to obtain a physical model;

[0064] A computing device is used to acquire the coordinates of at least two reference points in a solid building that has been constructed in a solid model, and to calculate the coordinates of a marker point by means of the acquired coordinates of the reference points in the solid building and the relationship between the reference points and at least two marker points on the main keel associated with the reference points.

[0065] A marking device used to mark reference points and marker points on existing physical structures.

[0066] The computing device includes: a section creation device for constructing a section flush with the surface of each beam and slab in the solid model drawing; a reference point coordinate acquisition device for acquiring the coordinates of a first reference point and a second reference point on the extension line connecting the first and second marker points on the main keel of the beam and slab surface on the section; and a marker point coordinate calculation device for calculating the coordinates of the first and second marker points on the main keel using the first and second reference points.

[0067] The marking device includes: a reference point marking device for marking a first reference point and a second reference point on the constructed building; an alignment device for aligning the angle steel marked with the first reference point and the second reference point with the first reference point and the second reference point on the constructed building; and an installation device for welding the angle steel to the beam plate.

[0068] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A method for positioning a main keel, characterized in that, include: Create a 3D model of the main keel assembly; Create a 3D scanning point cloud model of the existing physical building; The 3D model of the main keel component is overlaid with the 3D scanned point cloud model of the already constructed physical building to obtain the physical model; Obtain the coordinates of at least two reference points in the constructed solid building within the solid model. Using the obtained coordinates of these reference points and the relationship between them and at least two marker points on the main keel associated with each reference point, calculate the coordinates of the marker points. Mark reference points and marker points on the existing physical buildings; Obtain the coordinates of at least two reference points in the constructed solid building within the solid model. Using the obtained coordinates of these reference points and the relationship between them and at least two marker points on the main keel associated with each reference point, calculate the coordinates of the marker points, including: Construct a section in the solid model drawing that is flush with the surface of each layer of beams and slabs; Obtain the coordinates of the first reference point and the second reference point on the extension line connecting the first and second mark points on the main keel of the beam slab surface at this cross section; Calculate the coordinates of the first and second markers on the main keel using the first and second reference points; The first and second marker points are two other corner points E and F on the main keel, and the shortest distances between these two corner points E and F and the edge of the beam are equal. The line connecting the first reference point G and the second reference point H is parallel to the line connecting the two points EF on the beam, and EF = GH. The line connecting the midpoint of the line connecting the two points E and F and the midpoint of the line connecting the two points G and H is perpendicular to EF and GH. Creating a 3D scanned point cloud model of an already constructed physical building includes: The 3D spatial positioning of the already constructed physical building is scanned using a 3D laser scanner to obtain 3D scanning cloud point data; Process 3D scan point cloud data and build a 3D scan point cloud model based on the processed 3D scan point cloud data; Specifically, processing 3D scan point cloud data includes denoising, repairing, and stitching the 3D scan point cloud data. Building a 3D scan point cloud model based on the processed 3D scan point cloud data includes assigning a coordinate system to the scan model and compressing and converting the 3D scan data into a ReCap file. The solid model is obtained by overlaying the 3D model of the main keel component with the 3D scanned point cloud model of the already constructed physical building, including: Import the 3D scanned point cloud model and the 3D model of the main keel into BIM; The 3D scanning point cloud model and the 3D model of the main keel are aligned based on the same coordinate system; The building structure to which the main keel is attached in the 3D model of the main keel is replaced with the corresponding part of the building structure to which the main keel is attached in the 3D scanned point cloud model, so that the main keel is attached to the 3D scanned point cloud model to obtain a solid model.

2. The main keel positioning method as described in claim 1, characterized in that, When creating the 3D model of the main keel, the 3D model of the main keel components is created based on BIM.

3. The main keel positioning method as described in claim 1, characterized in that, Marking reference points and marker points on existing constructed buildings includes: Mark the first and second reference points on the existing construction site; Align the angle steel marked with the first reference point and the second reference point, as well as the first and second reference points, with the first and second reference points on the already constructed physical building. Angle steel is welded to the beam slab.

4. A main keel positioning system, based on the main keel positioning method according to any one of claims 1 to 3, characterized in that, include: A 3D model creation device is used to create a 3D model of the main keel. Point cloud model building device, used to create a 3D scanned point cloud model of an already constructed physical building; The overlay device is used to overlay the 3D model of the main keel with the 3D scanned point cloud model of the already constructed physical building to obtain a physical model; A computing device is used to acquire the coordinates of at least two reference points in a solid building that has been constructed in a solid model, and to calculate the coordinates of a marker point by means of the acquired coordinates of the reference points in the solid building and the relationship between the reference points and at least two marker points on the main keel associated with the reference points. A marking device used to mark reference points and marker points on existing physical structures.

5. The main keel positioning system as described in claim 4, characterized in that, The computing device includes: a section creation device for constructing a section flush with the surface of each beam and slab in the solid model drawing; a reference point coordinate acquisition device for acquiring the coordinates of a first reference point and a second reference point on the extension line connecting the first and second marker points on the main keel of the beam and slab surface on the section; and a marker point coordinate calculation device for calculating the coordinates of the first and second marker points on the main keel using the first and second reference points.

6. The main keel positioning system as described in claim 5, characterized in that, The marking device includes: a reference point marking device for marking a first reference point and a second reference point on the constructed physical building; an alignment device for aligning the angle steel marked with the first reference point and the second reference point with the first reference point and the second reference point on the constructed physical building; and an installation device for welding the angle steel to the beam plate.

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