A method for constructing a digital design information base of a precast beam segment

Abstract

The application discloses a precast beam segment digital design information library construction method, which comprises the following steps: S1, establishing three-dimensional models of different types of precast beam segments; S2, defining feature points of each type of precast beam segment, and performing coordinate matching on the three-dimensional models of each type of precast beam segment; S3, encoding absolute coordinates of each feature point of each type of precast beam segment; S4, establishing a feature point rule database of each type of precast beam segment; S5, extracting absolute coordinates of each feature point of each type of precast beam segment and connection relationships between each feature point of each type of precast beam segment, and calculating size data required by the connection relationships between each feature point; and S6, constructing a precast beam segment digital design information library according to the three-dimensional models of each type of precast beam segment and the size data required by the connection relationships between each feature point. The application can exhibit detailed sizes of each type of precast beam segment in combination with three-dimensional models, and accurately generate construction and production parameter information.

Description

Technical Field

[0001] This invention relates to the field of digital design information databases for precast beam segments. More specifically, this invention relates to a method for constructing a digital design information database for precast beam segments. Background Technology

[0002] With the rapid development of bridge engineering infrastructure technology in my country, prefabricated structures are increasingly widely used in bridge construction due to their advantages such as high standardization, guaranteed component quality, short construction cycle, minimal site disturbance, and environmental friendliness. The production and construction of precast beam segments typically includes prefabrication, warehousing, transportation, and installation. During prefabrication and installation, beam segments must be prefabricated and erected according to the drawings. After construction, quality inspection is also required based on the drawings. Furthermore, the quantity statistics and cost accounting of some key materials also require information from the drawings. Therefore, drawings are crucial for engineering construction. However, traditional paper drawings have problems such as high reading difficulty, inconvenient storage and carrying, and lack of intuitive expression, making them inconvenient for engineering technicians to use. To address these issues, several digital methods have been implemented to optimize and improve the process. One approach involves using OCR technology to convert paper drawings into electronic documents. While this makes saving and carrying the drawings more convenient, it still suffers from the problem of two-dimensional plans lacking intuitiveness. Another approach involves creating component models using 3D modeling. However, for more complex precast components like segmental beams, the current 3D models do not provide sufficient detail in their dimensions, hindering their effectiveness in engineering construction. Therefore, it is necessary to fully leverage digital tools to further optimize the display of detailed dimensions in 3D models. This includes building a digital design information database focused on precast beam segments, fully utilizing the intuitive display advantages of 3D models to enhance on-site personnel's understanding of the production objects, providing strong support for construction operations, quality inspection, and cost accounting, and improving the ease with which on-site technicians can use design information. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages that will be described later.

[0004] To achieve these objectives and other advantages according to the present invention, a method for constructing a digital design information database for precast beam segments is provided, comprising:

[0005] S1. Establish three-dimensional models of different types of precast beam segments;

[0006] S2. Define the feature points of the precast beam segment, and perform coordinate matching between the three-dimensional model coordinates of each type of precast beam segment and the absolute coordinates of the corresponding project where the precast beam segment is located.

[0007] S3. Encode the absolute coordinates of each feature point of each type of precast beam segment;

[0008] S4. Define the connection relationships between the feature points of each type of precast beam segment and establish a feature point rule database for each type of precast beam segment.

[0009] S5. Extract the absolute coordinates of each feature point of each type of precast beam segment and the connection relationship between each feature point of each type of precast beam segment, and calculate the dimensional data required for the connection relationship between each feature point.

[0010] S6. Based on the three-dimensional models of various types of precast beam segments and the required dimensional data of the connection relationships between various feature points, construct a digital design information database for precast beam segments.

[0011] Preferably, the characteristic points of the precast beam segment in step S2 include the four corner points and the center of the beam body, the four corner points and the center of the toothed block, the four corner points and the center of the transverse diaphragm, the center of the prestressed hole, the center of the hoisting hole, and the center of the shear key arrangement.

[0012] Preferably, in step S4, the connection relationship between the feature points of any type of precast beam segment is defined as a straight line connection relationship and a circular arc connection relationship;

[0013] When any two feature points are connected by a straight line, the connection between them is a straight line connection, and is recorded as the absolute coordinates of the two endpoints of the line;

[0014] When any two feature points are connected by an arc, the connection relationship between them is an arc connection relationship, and it is recorded as the absolute coordinates of the two endpoints and the midpoint of the arc.

[0015] Preferably, a feature point rule database for each type of precast beam segment is established based on all straight-line and circular-arc connection relationships of each type of precast beam segment.

[0016] Preferably, in step S5, for any type of precast beam segment, the absolute coordinates of each feature point and the connection relationship between each feature point are extracted respectively. The geometric relationship between each feature point is calculated using Euclidean distance in a spatial rectangular coordinate system, and the horizontal and vertical components are obtained through projection to obtain the dimensional data required for the connection relationship between each feature point.

[0017] Preferably, the digital design information database includes precast beam segment structural information obtained from the dimensional data required by the three-dimensional models of various types of precast beam segments and the connection relationships between various feature points. The precast beam segment structural information includes the beam body geometry, shear key arrangement position and geometry, tooth block arrangement position and geometry, anchor groove arrangement position and geometry, steering block arrangement position and geometry, and embedded part arrangement position and geometry.

[0018] Preferably, the digital design information database also includes material usage information, which is the specifications and usage of the main material concrete and various auxiliary materials calculated based on the precast beam segment structural information.

[0019] Preferably, the digital design information database also includes quality inspection standard information, which includes various quality control indicators required for quality inspection during the production of precast beam segments.

[0020] The present invention has at least the following beneficial effects:

[0021] 1. The method for constructing a digital design information database for precast beam segments provided by this invention involves establishing three-dimensional models of various types of precast beams and performing coordinate matching on the three-dimensional models; defining feature points of precast beam segments and encoding each feature point of the precast beam segments; then establishing a feature point rule database for various types of precast beam segments based on the connection relationship of each feature point; then calculating and restoring the dimensional data required by the feature point relationship to generate construction production parameter information; finally, based on the established three-dimensional models, constructing a digital design information database for precast beam segments, providing detailed display of the detailed dimensions of various types of precast beam segments, improving the understanding of the production object by on-site production personnel, and enhancing the convenience of on-site technicians in using design information.

[0022] 2. The method for constructing a digital design information database for precast beam segments provided by this invention incorporates the structural information, quality inspection standards, and material usage of precast beam segments into the digital design information database for precast beam segments, covering the entire production process of precast beam segments. This provides strong support for construction operations, quality inspection, and cost accounting, and further improves the production efficiency of precast beam segments.

[0023] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0024] Figure 1 This is a flowchart of the method for constructing a digital design information database for precast beam segments according to the present invention;

[0025] Figure 2This is a schematic diagram showing the position coordinates of three feature points of a precast beam segment in one embodiment of the present invention; Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0027] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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, specific orientation geometry, or operation. Therefore, they should not be construed as limitations on this invention.

[0028] like Figure 1 As shown, this invention provides a method for constructing a digital design information database for precast beam segments, comprising:

[0029] S1. Establish three-dimensional models of different types of precast beam segments;

[0030] S2. Define the feature points of the precast beam segment, and perform coordinate matching between the three-dimensional model coordinates of each type of precast beam segment and the absolute coordinates of the corresponding project where the precast beam segment is located.

[0031] S3. Encode the absolute coordinates of each feature point of each type of precast beam segment;

[0032] S4. Define the connection relationships between the feature points of each type of precast beam segment and establish a feature point rule database for each type of precast beam segment.

[0033] S5. Extract the absolute coordinates of each feature point of each type of precast beam segment and the connection relationship between each feature point of each type of precast beam segment, and calculate the dimensional data required for the connection relationship between each feature point.

[0034] S6. Based on the three-dimensional models of various types of precast beam segments and the required dimensional data of the connection relationships between various feature points, construct a digital design information database for precast beam segments.

[0035] In this technical solution, the three-dimensional models of various types of precast beam segments in step S1 integrate the design drawing information of each type of precast beam segment with key data such as the geometric dimensions of the precast beam body, the position and size of internal components such as toothed blocks and transverse diaphragms, the position and size of openings such as prestressed holes and hoisting holes, and the position and size of shear key arrangements, forming a design information set that can be directly used for construction based on the precast beam segments; then, the Rhino software is used to quickly build the three-dimensional model of the corresponding precast beam segment, generate a universal FBX format file, and import it into the BIM modeling software.

[0036] The characteristic points of the precast beam segment in step S2 include the four corner points and center of the beam body, the four corner points and center of the toothed block, the four corner points and center of the transverse diaphragm, the center of the prestressed hole, the center of the hoisting hole, and the center of the shear key arrangement.

[0037] In step S2, the coordinates of the 3D model of each type of precast beam segment are matched with the absolute coordinates of the corresponding project. Specifically, at least three feature points of the precast beam segment are first selected, and the actual coordinates of the feature points in the project are obtained as absolute coordinates. These coordinates serve as the basis for positioning the 3D model of the precast beam segment imported into the BIM modeling software. Then, in the modeling software platform, the feature points are matched with the absolute coordinates by translation and scaling, thereby achieving the unification of the 3D model coordinate system of the precast beam segment with the actual coordinates.

[0038] In step S3, the coding rule for encoding the absolute coordinates of each feature point of each type of precast beam segment is as follows: the precast beam segment is divided into beam body, internal components, openings, and shear keys. Then, it is decomposed step by step according to the project entity, and coded according to the principle of left to right and top to bottom. Specifically, the absolute coordinates of each feature point of each type of precast beam segment obtained in step S2 are extracted, and the above principle is used to encode them in combination with the name of each feature point, so that each feature point of the precast beam segment is uniquely marked.

[0039] In step S4, the connection relationship between the feature points of any type of precast beam segment is defined as a straight line connection relationship and a circular arc connection relationship;

[0040] When any two feature points are connected by a straight line, the connection between them is a straight line connection, and is recorded as the absolute coordinates of the two endpoints of the line;

[0041] When any two feature points are connected by an arc, the connection relationship between them is an arc connection relationship, and it is recorded as the absolute coordinates of the two endpoints and the midpoint of the arc.

[0042] The linear connection between two feature points is represented by the absolute coordinates of the two endpoints of a straight line, and the arc connection between two feature points is represented by the absolute coordinates of the two endpoints and the midpoint of an arc. Then, a feature point rule database for each type of precast beam segment is established, containing all the linear and arc connections.

[0043] In step S5, for any type of precast beam segment, the absolute coordinates of each feature point and the connection relationships between them are extracted. The geometric relationships between the feature points are calculated using Euclidean distance in a Cartesian coordinate system, and the horizontal and vertical components are obtained through projection. This yields the dimensional data required for the connection relationships between the feature points, which serves as the construction production parameter information for the precast beam segment. Specifically, using a WebGL-based digital platform, the BIM models of each type of precast beam segment are uploaded and converted into 3D models that can be displayed using WebGL (this can be achieved using existing tools such as Glodon BIMface and Autodesk Forge). In the WebGL-based digital platform, the absolute coordinates of each feature point in 3D space for all precast beam segments of each type are extracted directly according to the type of precast beam segment and the feature point encoding. The connection relationships between the feature points are then extracted from the corresponding feature point rule database, and the dimensional data required for the connection relationships between the feature points is calculated using Euclidean distance. (Refer to...) Figure 2 First, feature points A, B, and C of the precast beam segment are selected in the WebGL-based digital platform. Then, the coordinates of the feature points are extracted as follows: A(721531.3, 582436.8, 10), B(721566.2, 582435.3, 8.5), C(721566.2, 582446.5, 8.5). The connection relationship between feature points A and B is a straight line, and the connection relationship between feature points B and C is also a straight line. Finally, the following dimensions can be calculated using the Euclidean distance formula: AB is 35 meters, with an x-component of 34.9 meters, a y-component of 1.5 meters, and a z-component of 1.5 meters; BC is 11.2 meters, with an x-component of 0 meters, a y-component of 11.2 meters, and a z-component of 0 meters.

[0044] In step S6, the digital design information database includes precast beam segment structural information obtained based on the 3D models of various types of precast beam segments and the required dimensional data of the connection relationships between various feature points. This precast beam segment structural information includes the beam body geometry, shear key placement and geometry, tooth block placement and geometry, anchorage slot placement and geometry, steering block placement and geometry, and embedded part placement and geometry. In the digital design information database, the precast beam segment structural information is displayed through the 3D models of the precast beam segments for easy retrieval and viewing by on-site production personnel.

[0045] Furthermore, the digital design information database also includes material usage information, which is the specifications and usage of the main material concrete and various auxiliary materials calculated based on the precast beam segment structural information.

[0046] The digital design information database also includes quality inspection standard information, which includes various quality control indicators required for quality inspection during the production of precast beam segments. These include standard-based quality control indicators in quality inspection processes such as the three-inspection system, finished beam quality inspection, and installation linearity control.

[0047] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A method for constructing a digital design information database for precast beam segments, characterized in that, include: S1. Establish three-dimensional models of different types of precast beam segments; S2. Define the feature points of the precast beam segment, and perform coordinate matching between the three-dimensional model coordinates of each type of precast beam segment and the absolute coordinates of the corresponding project where the precast beam segment is located. S3. Encode the absolute coordinates of each feature point of each type of precast beam segment; S4. Define the connection relationships between the feature points of each type of precast beam segment and establish a feature point rule database for each type of precast beam segment. S5. Extract the absolute coordinates of each feature point of each type of precast beam segment and the connection relationship between each feature point of each type of precast beam segment, and calculate the dimensional data required for the connection relationship between each feature point. S6. Based on the three-dimensional models of various types of precast beam segments and the required dimensional data of the connection relationships between various feature points, construct a digital design information database for precast beam segments.

2. The method for constructing a digital design information database for precast beam segments as described in claim 1, characterized in that, The characteristic points of the precast beam segment in step S2 include the four corner points and center of the beam body, the four corner points and center of the toothed block, the four corner points and center of the transverse diaphragm, the center of the prestressed hole, the center of the hoisting hole, and the center of the shear key arrangement.

3. The method for constructing a digital design information database for precast beam segments as described in claim 1, characterized in that, In step S4, the connection relationship between the feature points of any type of precast beam segment is defined as a straight line connection relationship and a circular arc connection relationship; When any two feature points are connected by a straight line, the connection between them is a straight line connection, and is recorded as the absolute coordinates of the two endpoints of the line; When any two feature points are connected by an arc, the connection relationship between them is an arc connection relationship, and it is recorded as the absolute coordinates of the two endpoints and the midpoint of the arc.

4. The method for constructing a digital design information database for precast beam segments as described in claim 3, characterized in that, Based on all the straight-line and circular-arc connection relationships of each type of precast beam segment, a feature point rule database for each type of precast beam segment is established.

5. The method for constructing a digital design information database for precast beam segments as described in claim 1, characterized in that, In step S5, for any type of precast beam segment, the absolute coordinates of each feature point and the connection relationship between each feature point are extracted. The geometric relationship between each feature point is calculated using Euclidean distance in a spatial rectangular coordinate system. The horizontal and vertical components are obtained through projection, and the required dimensional data for the connection relationship between each feature point is obtained.

6. The method for constructing a digital design information database for precast beam segments as described in claim 1, characterized in that, The digital design information database includes precast beam segment structural information obtained from the 3D models of various types of precast beam segments and the required dimensional data of the connection relationships between various feature points. The precast beam segment structural information includes the beam body geometry, shear key arrangement position and geometry, tooth block arrangement position and geometry, anchor groove arrangement position and geometry, steering block arrangement position and geometry, and embedded part arrangement position and geometry.

7. The method for constructing a digital design information database for precast beam segments as described in claim 6, characterized in that, The digital design information database also includes material usage information, which consists of the specifications and usage of the main material concrete and various auxiliary materials calculated based on the precast beam segment structural information.

8. The method for constructing a digital design information database for precast beam segments as described in claim 6, characterized in that, The digital design information database also includes quality inspection standard information, which includes various quality control indicators required for quality inspection during the production of precast beam segments.

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