Lightning protection grounding design method and prediction system based on BIM model

Abstract

The application discloses a lightning protection grounding design method and design system based on a BIM model, and belongs to the technical field of computer-aided design, and comprises the following steps: S1, a model family module is established; S2, basic parameters are acquired; S3, a lightning receptor belt model is generated by using a lightning receptor belt family, and a lightning receptor leg model is generated by using a lightning receptor leg family, and the lightning receptor leg model is arranged on the lightning receptor belt according to an input interval; S4, a horizontal grounding electrode model is generated by using a horizontal grounding electrode family, and a vertical grounding electrode model is generated by using a vertical grounding electrode family by picking up a horizontal grounding electrode; S5, a break connection card model and a connection body model between the break connection card and the horizontal grounding electrode are generated by using a break connection card family by picking up a structure column model and the horizontal grounding electrode model; S6, connection of lightning protection grounding related equipment is performed; S7, lightning protection grounding equipment marking is performed, and lightning protection grounding material tables in an Excel format are counted and exported; and S8, a lightning protection grounding topology diagram is generated.

Description

Technical Field

[0001] This invention belongs to the field of computer-aided design technology, specifically relating to a lightning protection grounding design method and prediction system based on BIM model. Background Technology

[0002] Compared to traditional two-dimensional design, using three-dimensional software for lightning protection grounding design can effectively avoid interference between different types of equipment, presenting more intuitive and concise results, and significantly improving design accuracy. However, Revit's electrical modules lack a dedicated family library or module for lightning protection grounding modeling, making direct three-dimensional lightning protection grounding design impossible. While developing relevant lightning protection grounding family libraries has enabled three-dimensional lightning protection grounding design, several problems remain:

[0003] 1. Calculating the annual estimated number of lightning strikes and determining the lightning protection level of a building requires manually measuring the building's model dimensions, consulting local annual average thunderstorm days and other parameters, and manually substituting them into formulas to generate a lightning protection calculation sheet, which is time-consuming and labor-intensive.

[0004] 2. Laying lightning protection strips requires manual drawing on the roof plane, and each lightning protection strip support leg needs to be drawn individually, which reduces design efficiency;

[0005] 3. When laying grounding, it is necessary to manually draw horizontal grounding electrodes on the plane according to the shape of the building foundation and set the burial depth. Then, vertical grounding electrodes are drawn one by one on the horizontal grounding electrodes. The design process is cumbersome and inefficient.

[0006] 4. When making equipotential connections between lightning protection grounding devices, such as lightning protection down conductors and disconnection clamps, disconnection clamps and horizontal grounding electrodes, lightning protection strips and lightning protection down conductors, the devices to be connected are often not on the same plane, making related operations difficult.

[0007] 5. Designing from a three-dimensional perspective presents challenges such as visual interference and object occlusion, which can easily lead to misoperation and cause inconvenience to designers.

[0008] 6. The list of lightning protection and grounding materials needs to be compiled manually and cannot be directly exported as an Excel spreadsheet;

[0009] 7. Using Revit software's built-in tools to annotate equipment in lightning protection and grounding drawings involves numerous steps and is cumbersome to modify.

[0010] Currently, there is no dedicated 3D forward design software for lightning protection grounding. To address this issue, the applicant has developed a BIM model-based lightning protection grounding design method and prediction system to improve the efficiency and accuracy of lightning protection grounding design in 3D software. Summary of the Invention

[0011] This invention addresses a technical problem in the prior art: In the Revit model of BIM technology, different workshops have been modeled and parameterized in three dimensions, and all spatial information is contained in the Revit model. To facilitate convenient and quick lightning protection grounding design in the Revit model, this invention develops and designs a lightning protection grounding design method and prediction system based on the BIM model to solve the above problem and improve the efficiency and accuracy of lightning protection grounding design in three-dimensional software.

[0012] The first objective of this invention is to provide a lightning protection grounding design method based on a BIM model, comprising:

[0013] S1. Establish model family modules in BIM; the family modules include: lightning strip family, lightning strip support leg family, horizontal grounding electrode family, vertical grounding electrode family, and disconnection card family;

[0014] S2. Obtain basic parameters:

[0015] Obtain the building's dimensions from the Revit model and calculate the equivalent area of ​​the building that can withstand the same number of lightning strikes.

[0016] With the help of input correction coefficients and the annual average density of lightning strikes on the ground in the area where the building is located, the estimated number of lightning strikes on the building per year can be calculated.

[0017] Determine whether a building requires lightning protection design. If the annual estimated number of lightning strikes on a building is greater than 0.05, lightning protection design is required, and S3 is executed. If the annual estimated number of lightning strikes on a building is not greater than 0.05, lightning protection design is not required, and the process ends.

[0018] S3. In the Revit model, by picking the roof, corner, ridge, eaves and corner models of the building, inputting the offset height, analyzing the extension of the building roof, and using the lightning protection strip family to generate the lightning protection strip model; picking the lightning protection strip, inputting the lightning protection strip spacing, using the lightning protection strip leg family to generate the lightning protection strip leg model, and arranging the lightning protection strip leg model on the lightning protection strip according to the input spacing;

[0019] S4. In the Revit model, by picking the outer wall of the building, inputting the distance and burial depth of the horizontal grounding electrode design from the building, and using the horizontal grounding electrode family, a horizontal grounding electrode model is generated; by picking the horizontal grounding electrode, a vertical grounding electrode model is generated using the vertical grounding electrode family.

[0020] S5. In the Revit model, by picking the structural column model and the horizontal grounding electrode model, the disconnection card model is generated using the disconnection card family, and the connection body model between the disconnection card and the horizontal grounding electrode is generated at the same time.

[0021] S6. Connect the lightning protection and grounding equipment in the Revit model;

[0022] S7. In the Revit model, label the lightning protection and grounding equipment, and compile and export the lightning protection and grounding material list in Excel format;

[0023] S8. Generate the lightning protection grounding topology diagram in the Revit model.

[0024] Preferably, in S3, the lightning protection strip model is made of 25x4 galvanized flat steel.

[0025] Preferably, in S3, the lightning protection leg model is made of φ8 round steel.

[0026] Preferably, in S4, the horizontal grounding electrode model is made of 50x4 galvanized flat steel, and the vertical grounding electrode model is made of 25x25x4 galvanized angle steel.

[0027] The second objective of this invention is to provide a lightning protection grounding design system based on a BIM model, comprising:

[0028] Data preparation module: Establish model family modules in BIM; the family modules include: lightning strip family, lightning strip support leg family, horizontal grounding electrode family, vertical grounding electrode family, and disconnection card family;

[0029] Parameter Acquisition Module: Retrieves basic parameters:

[0030] Obtain the building's dimensions from the Revit model and calculate the equivalent area of ​​the building that can withstand the same number of lightning strikes.

[0031] With the help of input correction coefficients and the annual average density of lightning strikes on the ground in the area where the building is located, the estimated number of lightning strikes on the building per year can be calculated.

[0032] Determine whether a building requires lightning protection design. If the annual estimated number of lightning strikes on a building is greater than 0.05, lightning protection design is required, and S3 is executed. If the annual estimated number of lightning strikes on a building is not greater than 0.05, lightning protection design is not required, and the process ends.

[0033] The first model building module: In the Revit model, by picking the roof, corner, ridge, eaves and corner models of the building, inputting the offset height, analyzing the extension of the building roof, and using the lightning protection strip family to generate the lightning protection strip model; picking the lightning protection strip, inputting the lightning protection strip spacing, using the lightning protection strip leg family to generate the lightning protection strip leg model, and arranging the lightning protection strip leg model on the lightning protection strip according to the input spacing;

[0034] The second model building module: In the Revit model, by picking the outer wall of the building, inputting the distance and burial depth of the horizontal grounding electrode design from the building, and using the horizontal grounding electrode family, a horizontal grounding electrode model is generated; by picking the horizontal grounding electrode, a vertical grounding electrode model is generated using the vertical grounding electrode family.

[0035] The third model building module: In the Revit model, by picking the structural column model and the horizontal grounding electrode model, the disconnection card family is used to generate the disconnection card model, and at the same time, the connection body model between the disconnection card and the horizontal grounding electrode is generated.

[0036] Assembly module: Connecting lightning protection and grounding related equipment in the Revit model;

[0037] Annotation Export Module: In the Revit model, annotate the lightning protection and grounding equipment, compile and export the lightning protection and grounding material list in Excel format;

[0038] Topology generation module: Generates lightning protection grounding topology diagrams in the Revit model.

[0039] Preferably, in the first model construction module, the lightning protection strip model is made of 25x4 galvanized flat steel.

[0040] Preferably, in the first model construction module, the lightning protection leg model is made of φ8 round steel.

[0041] Preferably, in the second model construction module, the horizontal grounding electrode model is made of 50x4 galvanized flat steel, and the vertical grounding body model is made of 25x25x4 galvanized angle steel.

[0042] A third objective of this invention is to provide an information data processing terminal for implementing the aforementioned lightning protection grounding design method based on a BIM model.

[0043] A fourth objective of this invention is to provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the above-described lightning protection grounding design method based on a BIM model.

[0044] The advantages and positive effects of this invention are:

[0045] This invention directly utilizes BIM technology to extract building information from Revit models and automatically generate lightning protection calculation sheets in Excel format. It can automatically lay corresponding lightning protection grounding equipment by picking up the building model, achieving rapid connection between these devices. It also enables rapid annotation of lightning protection grounding equipment and automatically generates lightning protection grounding material data in Excel format. This significantly improves the efficiency and accuracy of lightning protection grounding design using 3D software, reduces the complexity of lightning protection grounding design in Revit models, and enhances the level of automated design. Attached Figure Description

[0046] Figure 1 This is the system's operation window in the implementation of this invention;

[0047] Figure 2 This is the lightning protection calculation sheet generation interface of a preferred embodiment of the present invention;

[0048] Figure 3 This is an automatically generated lightning protection calculation sheet according to a preferred embodiment of the present invention.

[0049] Figure 4 This is the lightning protection band generated in a preferred embodiment of the present invention;

[0050] Figure 5 The lightning-blocking strip legs are generated according to a preferred embodiment of the present invention;

[0051] Figure 6 This is the horizontal grounding electrode generated in a preferred embodiment of the present invention;

[0052] Figure 7 This is a vertical grounding electrode generated according to a preferred embodiment of the present invention;

[0053] Figure 8 This is a disconnection card generated according to a preferred embodiment of the present invention;

[0054] Figure 9 This is a preferred embodiment of the present invention, showing the connection between different planar devices. Detailed Implementation

[0055] To make the above-mentioned objectives, control system design, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0056] like Figures 1 to 9 As shown, the technical solution of the present invention is as follows:

[0057] A lightning protection grounding design method based on BIM model, comprising:

[0058] S1. Preparation: Create a building model and family modules in BIM; the family modules include: lightning protection strip family, lightning protection strip support leg family, horizontal grounding electrode family, vertical grounding electrode family, and disconnection card family;

[0059] S2. Obtain basic parameters:

[0060] Automatically extract the building's dimensions (length, width, height) from the Revit model and calculate the equivalent area (km²) of the building receiving the same number of lightning strikes. 2 ), supplemented by input correction coefficients and the annual average density of lightning strikes on the ground in the area where the building is located (times / km). 2 / a) Calculate the estimated annual number of lightning strikes on the building (times / a), and finally determine whether the building needs lightning protection design (if the estimated annual number of lightning strikes on the building is greater than 0.05, lightning protection design is required, execute S3; if the estimated annual number of lightning strikes on the building is not greater than 0.05, lightning protection design is not required, end). Using the prepared lightning protection calculation template file, the program automatically fills in the key data and generates the finished lightning protection calculation report in Excel format. The operation interface is as follows: Figure 2 As shown, the generated Excel format lightning protection calculation sheet and formulas are as follows: Figure 3 As shown;

[0061] S3. In the Revit model, by picking the roof, corners, ridges, eaves, and eaves models of the building, and inputting the offset height, analyze the extension of the building's roof. Using the developed lightning protection strip family, generate a lightning protection strip model composed of 25x4 galvanized flat steel with one click, such as... Figure 4 As shown; select the lightning protection strip, input the spacing, and using the developed lightning protection strip leg family, generate a lightning protection strip leg model made of φ8 round steel with one click. Then, arrange the legs on the lightning protection strip according to the input spacing, as shown. Figure 5 As shown;

[0062] S4. In the Revit model, by picking the building's outer walls and inputting the distance and burial depth of the horizontal grounding electrode design from the building, a horizontal grounding electrode model composed of 50x4 galvanized flat steel can be generated with one click using the developed horizontal grounding electrode family; for example... Figure 6 As shown, by selecting the horizontal grounding electrode and utilizing the developed vertical grounding electrode family, a vertical grounding electrode model composed of 25x25x4 galvanized angle steel can be generated with a single click, as shown below. Figure 7 As shown;

[0063] S5. In the Revit model, by picking the structural column model and the horizontal grounding electrode model, and using the developed disconnection card family, a disconnection card model can be generated with one click. Simultaneously, a connection model between the disconnection card and the horizontal grounding electrode can be generated, such as... Figure 8 As shown;

[0064] S6. Implement quick connection of lightning protection and grounding related equipment in the Revit model, such as... Figure 9 As shown;

[0065] S7. Enables rapid annotation of lightning protection and grounding equipment in Revit models, and automatically compiles and exports a lightning protection and grounding material table in Excel format;

[0066] S8. Generate lightning protection grounding topology diagrams with one click in Revit models.

[0067] In this application:

[0068] Model dimensions can be automatically obtained from the model's section frame dimensions, or they can be manually entered based on the actual situation, increasing design flexibility;

[0069] The spacing between the lightning arrester legs can be arranged according to the system default distance, or the spacing can be manually set, increasing design flexibility;

[0070] There are two ways to generate vertical grounding bodies on horizontal grounding electrodes: fixed distance and fixed number. You can choose freely according to different building types and design requirements.

[0071] The second objective of this invention is to provide a lightning protection grounding design system based on a BIM model, comprising:

[0072] Data preparation module: Preparation work: Create a building model and family modules in BIM; the family modules include: lightning protection strip family, lightning protection strip support leg family, horizontal grounding electrode family, vertical grounding electrode family, and disconnection card family;

[0073] Parameter Acquisition Module: Retrieves basic parameters:

[0074] Automatically extract the building's dimensions (length, width, height) from the Revit model and calculate the equivalent area (km²) of the building receiving the same number of lightning strikes. 2 ), supplemented by input correction coefficients and the annual average density of lightning strikes on the ground in the area where the building is located (times / km). 2 / a) Calculate the estimated annual number of lightning strikes on the building (times / a), and finally determine whether the building needs lightning protection design (if the estimated annual number of lightning strikes on the building is greater than 0.05, lightning protection design is required, execute S3; if the estimated annual number of lightning strikes on the building is not greater than 0.05, lightning protection design is not required, end). Using the prepared lightning protection calculation template file, the program automatically fills in the key data and generates the finished lightning protection calculation report in Excel format. The operation interface is as follows: Figure 2 As shown, the generated Excel format lightning protection calculation sheet and formulas are as follows: Figure 3 As shown;

[0075] The first model construction module: In the Revit model, by picking the roof, corners, ridges, eaves, and corner models of the building, inputting the offset height, analyzing the extension of the building's roof, and using the developed lightning protection strip family, a lightning protection strip model composed of 25x4 galvanized flat steel is generated with one click, such as... Figure 4 As shown; select the lightning protection strip, input the spacing, and using the developed lightning protection strip leg family, generate a lightning protection strip leg model made of φ8 round steel with one click. Then, arrange the legs on the lightning protection strip according to the input spacing, as shown. Figure 5 As shown;

[0076] The second model building module: In the Revit model, by picking the building's outer walls and inputting the distance and burial depth of the horizontal grounding electrode design from the building, a horizontal grounding electrode model composed of 50x4 galvanized flat steel is generated with one click using the developed horizontal grounding electrode family; for example... Figure 6 As shown, by selecting the horizontal grounding electrode and utilizing the developed vertical grounding electrode family, a vertical grounding electrode model composed of 25x25x4 galvanized angle steel can be generated with a single click, as shown below. Figure 7 As shown;

[0077] The third model building module: In the Revit model, by picking the structural column model and the horizontal grounding electrode model, and using the developed disconnection card family, a disconnection card model is generated with one click. Simultaneously, a connection model between the disconnection card and the horizontal grounding electrode is generated, such as... Figure 8 As shown;

[0078] Assembly module: Enables quick connection of lightning protection and grounding related equipment in the Revit model, such as... Figure 9 As shown;

[0079] Annotation Export Module: Enables rapid annotation of lightning protection and grounding equipment in Revit models, and automatically compiles and exports a lightning protection and grounding material list in Excel format;

[0080] Topology generation module: Enables one-click generation of lightning protection and grounding topology diagrams in Revit models.

[0081] An information data processing terminal is used to implement the above-mentioned lightning protection grounding design method based on BIM model.

[0082] A computer-readable storage medium includes instructions that, when executed on a computer, cause the computer to perform the aforementioned BIM model-based lightning protection grounding design method.

[0083] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented, in whole or in part, as a computer program product, the computer program product includes one or more computer instructions. When the computer program instructions are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)).

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A lightning protection grounding design method based on a BIM model, characterized in that, include: S1. Establish building models and family modules in BIM; the family modules include: lightning protection strip family, lightning protection strip support leg family, horizontal grounding electrode family, vertical grounding electrode family, and disconnection card family; S2. Obtain basic parameters: Obtain the building's dimensions from the Revit model and calculate the equivalent area of ​​the building that can withstand the same number of lightning strikes. With the help of input correction coefficients and the annual average density of lightning strikes on the ground in the area where the building is located, the estimated number of lightning strikes on the building per year can be calculated. Determine whether a building requires lightning protection design. If the annual estimated number of lightning strikes on a building is greater than 0.05, lightning protection design is required, and S3 is executed. If the annual estimated number of lightning strikes on a building is not greater than 0.05, lightning protection design is not required, and the process ends. S3. In the Revit model, by picking the roof, corner, ridge, eaves and corner models of the building, inputting the offset height, analyzing the extension of the building roof, and using the lightning protection strip family to generate the lightning protection strip model; picking the lightning protection strip, inputting the lightning protection strip spacing, using the lightning protection strip leg family to generate the lightning protection strip leg model, and arranging the lightning protection strip leg model on the lightning protection strip according to the input spacing; S4. In the Revit model, by picking the outer wall of the building, inputting the distance and burial depth of the horizontal grounding electrode design from the building, and using the horizontal grounding electrode family, a horizontal grounding electrode model is generated; by picking the horizontal grounding electrode, a vertical grounding electrode model is generated using the vertical grounding electrode family. S5. In the Revit model, by picking the structural column model and the horizontal grounding electrode model, the disconnection card model is generated using the disconnection card family, and the connection body model between the disconnection card and the horizontal grounding electrode is generated at the same time. S6. Connect the lightning protection and grounding equipment in the Revit model; S7. In the Revit model, label the lightning protection and grounding equipment, and compile and export the lightning protection and grounding material list in Excel format; S8. Generate the lightning protection grounding topology diagram in the Revit model.

2. The lightning protection grounding design method based on BIM model according to claim 1, characterized in that, In S3, the lightning protection strip model is made of 25x4 galvanized flat steel.

3. The lightning protection grounding design method based on BIM model according to claim 1, characterized in that, In S3, the lightning protection leg model is made of φ8 round steel.

4. The lightning protection grounding design method based on BIM model according to claim 1, characterized in that, In S4, the horizontal grounding electrode model is made of 50x4 galvanized flat steel, and the vertical grounding electrode model is made of 25x25x4 galvanized angle steel.

5. A lightning protection grounding design system based on a BIM model, characterized in that, The method for implementing the BIM model-based lightning protection grounding design method as described in claim 1 includes: Data preparation module: Creates building models and family modules in BIM; the family modules include: lightning protection strip family, lightning protection strip support leg family, horizontal grounding electrode family, vertical grounding electrode family, and disconnection card family; Parameter Acquisition Module: Retrieves basic parameters: Obtain the building's dimensions from the Revit model and calculate the equivalent area of ​​the building that can withstand the same number of lightning strikes. With the help of input correction coefficients and the annual average density of lightning strikes on the ground in the area where the building is located, the estimated number of lightning strikes on the building per year can be calculated. Determine whether a building requires lightning protection design. If the building's annual expected number of lightning strikes is greater than 0.05, lightning protection design is required. Execute S3 in the first model construction module. If the building's annual expected number of lightning strikes is not greater than 0.05, lightning protection design is not required. End. The first model building module: In the Revit model, by picking the roof, corner, ridge, eaves and corner models of the building, inputting the offset height, analyzing the extension of the building roof, and using the lightning protection strip family to generate the lightning protection strip model; picking the lightning protection strip, inputting the lightning protection strip spacing, using the lightning protection strip leg family to generate the lightning protection strip leg model, and arranging the lightning protection strip leg model on the lightning protection strip according to the input spacing; The second model building module: In the Revit model, by picking the outer wall of the building, inputting the distance and burial depth of the horizontal grounding electrode design from the building, and using the horizontal grounding electrode family, a horizontal grounding electrode model is generated; by picking the horizontal grounding electrode, a vertical grounding electrode model is generated using the vertical grounding electrode family. The third model building module: In the Revit model, by picking the structural column model and the horizontal grounding electrode model, the disconnection card family is used to generate the disconnection card model, and at the same time, the connection body model between the disconnection card and the horizontal grounding electrode is generated. Assembly module: Connecting lightning protection and grounding related equipment in the Revit model; Annotation Export Module: In the Revit model, annotate the lightning protection and grounding equipment, compile and export the lightning protection and grounding material list in Excel format; Topology generation module: Generates lightning protection grounding topology diagrams in the Revit model.

6. The lightning protection grounding design system based on a BIM model according to claim 5, characterized in that, In the first model construction module, the lightning protection strip model is made of 25x4 galvanized flat steel.

7. The lightning protection grounding design system based on a BIM model according to claim 5, characterized in that, In the first model construction module, the lightning protection leg model is made of φ8 round steel.

8. The lightning protection grounding design system based on a BIM model according to claim 5, characterized in that, In the second model construction module, the horizontal grounding electrode model is made of 50x4 galvanized flat steel, and the vertical grounding electrode model is made of 25x25x4 galvanized angle steel.

9. A computer-readable storage medium, characterized in that, Including instructions that, when run on a computer, cause the computer to execute the lightning protection grounding design method based on a BIM model as described in any one of claims 1-4.

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