CN117390730A - A digital twin-based laminated plate modeling method - Google Patents

Abstract

The invention discloses a laminated board modeling method based on digital twins, which belongs to the field of construction technology and is used to solve the problem that in the existing technology, the detailed design of laminated boards is completed by designers based on experience, resulting in low design quality, low design efficiency, and lack of construction. Data is not conducive to the intelligent construction of components; in the present invention, the two-dimensional CAD graphics and the three-dimensional BIM model are organically combined, making full use of the simplicity and convenience of the CAD graphics and the visualization of the BIM model, which not only ensures the easy promotion of the method, but also ensures This ensures the accuracy of the design results; in the invention, a CAD secondary development program is used to extract prefabricated floor slab information and the automatic generation of detailed design drawings, and a secondary development program of BIM software is used to realize automatic modeling of prefabricated floor slabs. The secondary development program With the use of CAD-based flat method structural construction drawings, designers can quickly complete the in-depth design of prefabricated floor slabs in batches by simply drawing the outline of the prefabricated floor slab and filling in the corresponding information form.

Description

A digital twin-based laminated plate modeling method

Technical field

The invention belongs to the field of construction technology, and specifically relates to a digital twin-based laminated panel modeling method.

Background technique

The in-depth design data of the laminated panels runs through the cost, material procurement, factory processing and on-site installation of the laminated panels. The detailed design of laminated panels not only requires designers to be able to accurately draw detailed design drawings, but also requires understanding of the processing technology of laminated panels and the construction site operation and maintenance and hoisting plans. All of these are difficult to accomplish using the traditional two-dimensional CAD design model. .

BIM technology has powerful parametric modeling and visualization functions. After the simulation and assembly of each laminated plate component model is completed in BIM, collision detection can be performed to check whether there is a collision between the laminated plate and other components; in BIM, the three-dimensional information established The model can realize information sharing and promote good collaboration and communication between various disciplines; in BIM, when the three-dimensional prefabricated components are changed, the corresponding horizontal, vertical, and section plans are automatically updated, and the engineering quantity information can be automatically counted, saving time. Improve design efficiency. The parameterization and three-dimensional visualization of BIM technology provide the possibility for in-depth design of prefabricated composite panels.

Currently, software that combines BIM technology and is based on algorithms to realize automatic splitting of laminated panels includes Hongye, PKPM, Yingjianke, etc. Although various existing platforms can realize in-depth design of laminated panels, they are still limited in batch design and There are deficiencies in three-dimensional avoidance of steel bars and deep data sharing.

At present, in the design of prefabricated structures, the detailed design of laminated panels is completed by designers based on experience. The design quality is not high, the design efficiency is low, and there is a lack of construction data, which is not conducive to the intelligent construction of components. The existing BIM software is difficult to model steel bars and has poor parametric control performance, and cannot meet the needs of batch detailed design of laminated panels.

Contents of the invention

In view of the problems existing in the prior art, the present invention aims to provide a laminated plate modeling method based on digital twins to solve the problem that in the prior art, the detailed design of laminated plates is completed by designers based on experience, and the design quality is not high. Low design efficiency and lack of construction data are not conducive to intelligent construction of components. The existing BIM software is difficult to model steel bars and has poor parametric control performance, and cannot meet the needs of batch deepening design of laminated panels.

The technical solutions adopted by the present invention are as follows:

A digital twin-based laminated plate modeling method is characterized by including the following steps:

Step 1. Create a parametric digital model and drawing template for the detailed design of the laminated plate suitable for CAD and BIM platforms;

Step 2. In the floor plan construction drawing based on the CAD platform, split the floor into laminated panels, draw the laminated panel outline, create and fill in the laminated panel information form within the outline, and generate the laminated panel floor plan;

Step 3. Through CAD secondary development, write a program to batch extract the laminated plate outline information and the information in the laminated plate information table in the laminated plate floor plan;

Step 4. Based on the information extracted in step 3, the program calculates the number and corresponding spacing of the truss bars of the laminated plate, calculates the number and corresponding spacing of the stressed steel bars in one direction of the laminated plate, and calculates the other information of the laminated plate. Information such as the number of stressed steel bars in one direction and the corresponding spacing can be used to generate composite plate parameters in batches;

Step 5. The program associates the laminated plate truss bar information obtained in steps 3 and 4 with the laminated plate truss bar parameters in the laminated plate detailed design template in step 1, generates BIM models of the laminated plate truss bars in batches, and draws them in batches CAD-based composite slab truss reinforcement;

Step 6. Write a program to associate the stress-bearing reinforcement information of the laminated plate obtained in steps 3 and 4 with the steel bar parameters and hanging point parameters in the two directions in the detailed design template of the laminated plate in step 1, and generate the two layers of the laminated plate in batches. BIM model of steel bars and lifting points in each direction;

Step 7. Assemble the truss bars, steel bars and hanging points of the composite slab to generate a composite slab model;

Step 8. Design the actual laminated board based on the generated laminated board model, conduct a strength test on the actual laminated board, and obtain the strength test results;

Step 9. Adjust the parameters in steps 5 to 7 based on the strength test results;

The parameters include length, quality, quantity, material, etc.

A laminated plate strength testing device used to test the strength of actual laminated plates. It includes a platform. The platform is provided with an opening. The opening is provided with a fixing device for fixing the laminated plate and for driving the fixing device to rotate. A rotating device; a collision device for colliding with the stacked plate is provided above the platform.

In this technical solution, it should be noted that the strength testing device is used to conduct strength testing experiments on the laminated plates designed by the staff based on the laminated plate model. Among them, the fixing device is used to fix the laminated plates, and the rotating device can drive The fixing device rotates so that the laminated plate can be fixed at any angle within a 360° range, so that the collision device can perform a collision test on the laminated plate at any angle.

Preferably, the fixing device includes a support plate and a clamp. Support plates are provided on both sides of the opening in the width direction, and fixing plates are provided on both ends of the top of the support plate. The clamp includes a clamping plate and a drive. assembly, the clamping plate is located on the top of the support plate and between the two fixed plates, the driving assembly is used to drive the clamping plate to move along the length direction of the supporting plate; the top of the supporting plate is provided with a groove, and the driving assembly It includes a screw, and both ends of the screw are rotationally connected to both ends of the groove. The bottom of the splint is provided with a slider that is slidably embedded in the groove, and the slider is threadedly connected to the screw.

In this technical solution, it should be noted that when the laminated plate needs to be fixed, the laminated plate is first hoisted on the support plate through a hoisting machine, and the laminated plate is located between the fixed plate and the splint. After that, the screw is rotated, and the screw is The rotation causes the clamping plate threaded with it to move along the axial direction of the screw until the laminated plate is clamped.

Preferably, the rotating device includes a first rotating shaft. One end of the first rotating shaft is connected to the fixing device, and the other end extends out of the platform and is rotationally connected to the platform. The platform is provided with a rotating shaft for driving the first rotating shaft to rotate. First motor.

In this technical solution, it should be noted that when the angle of the laminated plate needs to be adjusted, the first motor is started so that the first motor drives the first rotating shaft to rotate at a certain angle, and the first rotating shaft rotates at a certain angle so that the fixing device drives the laminated plate. Turn a certain angle.

Preferably, the bottom of the platform is provided with support legs, and the bottom of the support legs is provided with pulleys.

Preferably, the collision device includes a collision ball, which is supported above the platform by a support frame. A take-up wheel is provided on the top of the support frame, and a connecting line is provided on the take-up wheel. The connecting line One end is connected to the take-up wheel, and the other end is connected to the collision ball. The top of the support frame is provided with a connecting frame, and the take-up wheel is rotationally connected to the connecting frame through a second rotating shaft. The top of the support frame is provided with a cylinder and a motor. The motor is slidingly connected to the support frame. The output end of the motor is fixedly connected with a plug-in column. The plug-in column is in a polygonal shape. One end of the second rotating shaft is provided with The slot is adapted to the insertion post, the cylinder is located on the top of the motor support frame, and the output end of the cylinder is connected to an end of the motor away from the second rotating shaft.

In this technical solution, it should be noted that when it is necessary to conduct a collision test on the laminated plate on the fixture, the cylinder is started, and the output end of the cylinder contracts, driving the motor to move in a direction away from the second rotating shaft, so that the output end of the second motor The insertion post is detached from the slot. At this time, the take-up wheel is in an interactive state, and the collision ball falls due to gravity and hits the laminated plate to complete the strength test. After the test, the cylinder is started again, and the output end of the cylinder stretches, driving The motor and the plug on the motor are inserted into the slot, so that the first rotating shaft is connected to the output end of the motor, and then the second motor is started, and the second motor drives the second rotating shaft to rotate, so that the take-up wheel drives the connecting wire to gradually wrap around the take-up wire. On the wheel, the collision ball gradually rises. When the collision ball rises to a certain height, just turn off the motor.

In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

1. In the present invention, two-dimensional CAD graphics and three-dimensional BIM models are organically combined, making full use of the simplicity and convenience of CAD graphics and the visualization of BIM models, which not only ensures the easy promotion of the method, but also ensures the accuracy of the design results; adopted in the invention The CAD secondary development program realizes the extraction of prefabricated floor slab information and the automatic generation of detailed design drawings. The secondary development program of BIM software is used to realize the automatic modeling of prefabricated floor slabs. To use the secondary development program, the designer only needs to By simply drawing the outline of the prefabricated floor slab and filling in the corresponding information form in the CAD flat structure construction drawing, the in-depth design of the prefabricated floor slab can be quickly completed in batches.

2. In the present invention, the strength testing device is used to conduct strength testing experiments on the laminated boards designed by the staff based on the laminated board model. The fixing device is used to fix the laminated boards, and the rotating device can drive the fixing device to rotate. So that the laminated board can be fixed at any angle within the 360° range, so that the collision device can perform a collision test on the laminated board at any angle.

Description of the drawings

The invention will be described by way of example and with reference to the accompanying drawings, in which:

Figure 1 is a schematic three-dimensional structural diagram of the present invention;

Figure 2 is a schematic three-dimensional structural diagram of the platform of the present invention;

Figure 3 is a schematic three-dimensional structural diagram of the second motor and the second rotating shaft of the present invention when they are separated.

Reference signs

10-Platform, 11-supporting legs, 12-pulley, 20-laminated plate, 21-fixed plate, 22-plywood, 221-sliding block, 23-screw, 24-groove, 25-first rotating shaft, 26-th One motor, 30-support plate, 40-support frame, 50-take-up wheel, 51-connecting frame, 52-second rotating shaft, 521-slot, 53-second motor, 531-insertion column, 54-cylinder, 55-connecting line, 56-colliding ball.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only These are part of the embodiments of this application, but not all of them. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the appended drawings is not intended to limit the scope of the claimed application, but rather to represent selected embodiments of the application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without any creative work shall fall within the scope of protection of this application.

Example 1

This embodiment proposes a digital twin-based laminated plate modeling method, which includes the following steps:

A digital twin-based laminated plate modeling method is characterized by including the following steps:

Step 1. Create a parametric digital model and drawing template for the detailed design of the laminated plate suitable for CAD and BIM platforms;

Step 2. In the floor plan construction drawing based on the CAD platform, split the floor into laminated panels, draw the laminated panel outline, create and fill in the laminated panel information form within the outline, and generate the laminated panel floor plan;

Step 3. Through CAD secondary development, write a program to batch extract the laminated plate outline information and the information in the laminated plate information table in the laminated plate floor plan;

Step 4. Based on the information extracted in step 3, the program calculates the number and corresponding spacing of the truss bars of the laminated plate, calculates the number and corresponding spacing of the stressed steel bars in one direction of the laminated plate, and calculates the other information of the laminated plate. Information such as the number of stressed steel bars in one direction and the corresponding spacing can be used to generate composite plate parameters in batches;

Step 5. The program associates the laminated plate truss bar information obtained in steps 3 and 4 with the laminated plate truss bar parameters in the laminated plate detailed design template in step 1, generates BIM models of the laminated plate truss bars in batches, and draws them in batches CAD-based composite slab truss reinforcement;

Step 6. Write a program to associate the stress-bearing reinforcement information of the laminated plate obtained in steps 3 and 4 with the steel bar parameters and hanging point parameters in the two directions in the detailed design template of the laminated plate in step 1, and generate the two layers of the laminated plate in batches. BIM model of steel bars and lifting points in each direction;

Step 7. Assemble the truss bars, steel bars and hanging points of the composite slab to generate a composite slab model;

Step 8. Design the actual laminated board based on the generated laminated board model, conduct a strength test on the actual laminated board, and obtain the strength test results;

Step 9. Adjust the parameters in steps 5 to 7 based on the strength test results;

The parameters include length, quality, quantity, material, etc.

Implementation 2

As shown in Figures 1-3, this embodiment proposes a laminated plate strength testing device for testing the strength of the laminated plate 20, including a platform 10. The platform 10 is provided with an opening, and the opening is provided with a A fixing device for fixing the laminated plate 20 and a rotating device for driving the fixing device to rotate; a collision device for colliding with the laminated plate 20 is provided above the platform 10 . It should be noted that the strength testing device is used to conduct strength testing experiments on the laminated plate 20 designed by the staff based on the laminated plate 20 model. The fixing device is used to fix the laminated plate 20, and the rotating device can drive the fixing device. Rotate so that the laminated plate 20 can be fixed at any angle within a 360° range, so that the collision device can perform a collision test on the laminated plate 20 at any angle.

As shown in Figures 1-3, in this embodiment, the fixing device includes a support plate 30 and a clamp. Support plates 30 are provided on both sides in the width direction of the opening. The top two ends of the support plate 30 Fixed plates 21 are provided respectively; the clamp includes a clamping plate 22 and a driving assembly. The clamping plate 22 is located on the top of the supporting plate 30 and between the two fixed plates 21 . The driving assembly is used to drive the clamping plate 22 along the supporting plate 30 move in the length direction; the top of the support plate 30 is provided with a groove 24, the driving assembly includes a screw 23, the two ends of the screw 23 are rotationally connected to the two ends of the groove 24, and the bottom of the clamping plate 22 is provided with a groove 24. There is a slider 221 slidably embedded in the groove 24 , and the slider 221 is threadedly connected to the screw rod 23 . It should be noted that when the laminated plate 20 needs to be fixed, the laminated plate 20 is first hoisted on the support plate 30 by a hoisting machine, and the laminated plate 20 is located between the fixing plate 21 and the clamping plate 22. After that, the screw rod 23 is rotated. , the screw rod 23 rotates so that the clamping plate 22 threadedly connected with it moves along the axial direction of the screw rod 23 until the laminated plate 20 is clamped.

As shown in Figures 1-3, in this embodiment, the rotating device includes a first rotating shaft 25. One end of the first rotating shaft 25 is connected to the fixing device, and the other end goes out of the platform 10 and is rotationally connected to the platform 10. , the platform 10 is provided with a first motor 26 for driving the first rotating shaft 25 to rotate. It should be noted that when the angle of the laminated plate 20 needs to be adjusted, the first motor 26 is started so that the first motor 26 drives the first rotating shaft 25 to rotate a certain angle, and the first rotating shaft 25 rotates a certain angle so that the fixing device drives the laminated plate. 20Rotate a certain angle.

As shown in Figures 1-3, in this embodiment, the bottom of the platform 10 is provided with support legs 11, and the bottom of the support legs 11 is provided with pulleys 12.

As shown in Figures 1-3, in this embodiment, the collision device includes a collision ball 56. The collision ball 56 is supported above the platform 10 through a support frame 40. A take-up wheel 50 is provided on the top of the support frame 40. , the take-up wheel 50 is provided with a connecting wire 55, one end of the connecting wire 55 is connected to the take-up wheel 50, the other end is connected to the collision ball 56, the top of the support frame 40 is provided with a connecting frame 51, the The take-up wheel 50 is rotatably connected to the connecting frame 51 through the second rotating shaft 52 . The top of the support frame 40 is provided with a cylinder 54 and a motor. The motor is slidingly connected to the support frame 40. An insertion post 531 is fixedly connected to the output end of the motor. The insertion post 531 is in a polygonal shape. The second second One end of the rotating shaft 52 is provided with a slot 521 adapted to the insertion post 531 . The cylinder 54 is located on the top of the motor support frame 40 , and the output end of the cylinder 54 is connected to an end of the motor away from the second rotating shaft 52 . It should be noted that when it is necessary to perform a collision test on the laminated plate 20 on the fixture, the cylinder 54 is started, and the output end of the cylinder 54 contracts, driving the motor to move in a direction away from the second rotating shaft 52, so that the output end of the second motor 53 The insertion post 531 is detached from the slot 521. At this time, the take-up wheel 50 is in an interactive state, and the collision ball 56 falls due to gravity and hits the laminated plate 20 to complete the strength test; after the test, the cylinder 54 is started again. The output end of 54 is stretched, driving the motor and the plug 531 on the motor to be inserted into the slot 521, so that the first rotating shaft 25 is docked with the output end of the motor, and then the second motor 53 is started, and the second motor 53 drives the second rotating shaft 52 to rotate. , so that the take-up wheel 50 drives the connecting wire 55 to gradually wrap around the take-up wheel 50, so that the collision ball 56 gradually rises. When the collision ball 56 rises to a certain height, just turn off the motor.

The above-described embodiments only express specific implementation modes of the present application, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of protection of the present application. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the technical solution of the present application, and these all fall within the protection scope of the present application.

Claims (8)

1. The digital twinning-based superimposed sheet modeling method is characterized by comprising the following steps of:

step 1, creating a superimposed sheet deepened design parameterized digital model and a drawing template suitable for CAD and BIM platforms;

step 2, in a floor slab flat method construction drawing based on a CAD platform, splitting a floor slab into laminated slabs, drawing a contour line of the laminated slabs, creating and filling in an information form of the laminated slabs in the contour line, and generating a laminated slab plane layout drawing;

step 3, extracting the outline information of the laminated plate and the information in the laminated plate information table in batch in the laminated plate plane layout chart through CAD secondary development by a programming program;

step 4, calculating the number of truss ribs of the superimposed sheet and the corresponding spacing according to the information extracted in the step 3 by a program, calculating the information such as the number of stressed steel bars in one direction of the superimposed sheet and the corresponding spacing, calculating the information such as the number of stressed steel bars in the other direction of the superimposed sheet and the corresponding spacing, and generating superimposed sheet parameters in batches;

step 5, correlating the superimposed sheet truss rib information obtained in the step 3 and the step 4 with superimposed sheet truss rib parameters in the superimposed sheet deepening design drawing template in the step 1 by a program, generating a superimposed sheet truss rib BIM model in batches, and drawing the superimposed sheet truss ribs based on CAD in batches;

step 6, programming to correlate the stress bar information of the superimposed sheet obtained in the step 3 and the step 4 with the reinforcement parameters and the hanging point parameters in the two directions of the superimposed sheet deepening design drawing template in the step 1, and generating BIM models of the reinforcement and the hanging point in the two directions of the superimposed sheet in batches;

step 7, assembling truss ribs, steel bars and hanging points of the laminated slab to generate a laminated slab model;

step 8, designing a superimposed sheet object according to the generated superimposed sheet model, and performing strength test on the superimposed sheet object to obtain a strength test result;

and 9, adjusting parameters in the steps 5-7 based on the strength test result.

2. The device for testing the strength of the superimposed sheet material object is used for testing the strength of the superimposed sheet material object generated in the method, and is characterized by comprising a platform (10), wherein an opening is formed in the platform (10) in a penetrating manner, and a fixing device for fixing the superimposed sheet (20) and a rotating device for driving the fixing device to rotate are arranged at the opening;

and a collision device for collision of the laminated plates (20) is arranged above the platform (10).

3. The laminated slab strength testing device according to claim 2, wherein the fixing device comprises a supporting plate (30) and a clamp, the supporting plate (30) is respectively arranged at two sides in the width direction of the opening, and the fixing plates (21) are respectively arranged at two ends of the top of the supporting plate (30);

the clamp comprises a clamping plate (22) and a driving assembly, wherein the clamping plate (22) is arranged at the top of the supporting plate (30) and is positioned between the two fixing plates (21), and the driving assembly is used for driving the clamping plate (22) to move along the length direction of the supporting plate (30).

4. A laminated plate strength testing device according to claim 3, wherein the top of the supporting plate (30) is provided with a groove (24), the driving assembly comprises a screw (23), two ends of the screw (23) are rotatably connected with two ends of the groove (24), the bottom of the clamping plate (22) is provided with a sliding block (221) which is embedded in the groove (24) in a sliding manner, and the sliding block (221) is in threaded connection with the screw (23).

5. The laminated slab strength testing device according to claim 2, wherein the rotating device comprises a first rotating shaft (25), one end of the first rotating shaft (25) is connected with the fixing device, the other end of the first rotating shaft penetrates out of the platform (10) and is rotationally connected with the platform (10), and a first motor (26) for driving the first rotating shaft (25) to rotate is arranged on the platform (10).

6. The laminated slab strength testing device according to claim 2, wherein supporting legs (11) are arranged at the bottom of the platform (10), and pulleys (12) are arranged at the bottoms of the supporting legs (11).

7. The laminated slab strength testing device according to claim 2, wherein the collision device comprises a collision ball (56), the collision ball (56) is supported above the platform (10) through a support frame (40), a take-up pulley (50) is arranged at the top of the support frame (40), a connecting wire (55) is arranged on the take-up pulley (50), one end of the connecting wire (55) is connected with the take-up pulley (50), the other end of the connecting wire is connected with the collision ball (56), a connecting frame (51) is arranged at the top of the support frame (40), and the take-up pulley (50) is rotationally connected with the connecting frame (51) through a second rotating shaft (52).

8. The laminated slab strength testing device according to claim 7, wherein the top of the supporting frame (40) is provided with an air cylinder (54) and a motor, the motor is in sliding connection with the supporting frame (40), an inserting column (531) is fixedly connected to the output end of the motor, the inserting column (531) is in a polygonal shape, one end of the second rotating shaft (52) is provided with a slot (521) matched with the inserting column (531), the air cylinder (54) is arranged at the top of the motor supporting frame (40), and the output end of the air cylinder (54) is connected with one end of the motor far away from the second rotating shaft (52).