Fabricated laminated slab engineering scheme generation system based on Web and BIM

Abstract

The invention relates to the field of building digitization, in particular to an assembly type laminated slab engineering scheme generation system based on Web and BIM, which comprises a first client, a data center and a second client. The first client and the second client are in communication connection with the data center through a web network. The first client side is used for uploading the laminated slab arrangement diagram so as to obtain laminated slab arrangement data and send the laminated slab arrangement data to the data center. And the data center is used for constructing a composite slab BIM three-dimensional model according to the composite slab arrangement data, and determining composite slab concrete demand quantity data and steel bar demand quantity data according to the composite slab BIM three-dimensional model. And the data center is also used for sending the laminated slab BIM three-dimensional model, the concrete demand quantity data and the steel bar demand quantity data to the second client. The effectiveness and accuracy of information transmission between a material purchaser and a laminated slab producer can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of building digitization, and in particular to a Web- and BIM-based assembled composite slab engineering solution generation system. Background Art

[0002] In the modern construction industry, digital technology is becoming more and more popular. At present, for the customization of building materials (for example, the customization of composite panels), the purchaser is still required to send the designed drawings to the manufacturer first, and then the manufacturer will produce them. However, in this process, a lot of time is often spent in the early communication process. The purchaser sometimes needs to send specialists to the manufacturer for on-site communication and supervision to ensure the accurate progress of building materials production, which leads to very high communication costs for both parties and easily affects the timeliness of product delivery.

[0003] In view of this, this application is hereby filed. Summary of the invention

[0004] The purpose of the present invention is to provide a prefabricated composite panel engineering plan generation system based on Web and BIM, which can effectively improve the effectiveness and accuracy of information transmission between material purchasers and composite panel manufacturers, and can help composite panel manufacturers shorten production preparation time, effectively improving the timeliness of product delivery.

[0005] The embodiment of the present invention is achieved as follows: A system for generating a prefabricated composite board engineering plan based on Web and BIM includes: a first client, a data center and a second client. The first client and the second client are both connected to the data center via a web network communication.

[0006] The first client is used to upload the superimposed plate layout drawing to obtain the superimposed plate layout data and send the superimposed plate layout data to the data center.

[0007] The data center is used to construct a BIM three-dimensional model of the superimposed slab according to the superimposed slab layout data, and to determine the concrete demand data and steel demand data of the superimposed slab according to the BIM three-dimensional model of the superimposed slab. The data center is also used to send the BIM three-dimensional model of the superimposed slab, the concrete demand data and the steel demand data to the second client.

[0008] Among them, the first client is used by the material purchaser, and the second client is used by the composite board manufacturer.

[0009] Furthermore, the composite plate arrangement data includes: a feature code sequence.

[0010] When the first client obtains the signature sequence, it executes the identification process. The identification process includes the following steps: S1. Place the composite plate layout drawing into a reference plane and randomly generate a reference point in the reference plane.

[0011] S2. Determine each rectangular area corresponding to the superimposed plate in the superimposed plate layout diagram, and select a rectangular area as an identification object.

[0012] S3. Set a moving point on the boundary of the object to be identified, and construct a line between the moving point and the reference point. When the moving point moves unidirectionally along the boundary of the object to be identified, the length and angle of the line are recorded for each unit distance moved by the moving point and each corner of the object to be identified, until the moving point completes a circle along the boundary of the object to be identified.

[0013] S4. Take another rectangular area closest to the recognition object as a new recognition object, and repeat S3 until all rectangular areas are traversed.

[0014] S5. Create a signature sequence, the signature sequence includes a number of signature units arranged in sequence. The length value and angle value belonging to the same connecting line are stored in the same signature unit, and are stored in each signature unit in sequence according to the generation order of the length value and the angle value.

[0015] Furthermore, when the data center constructs the BIM three-dimensional model of the superimposed slab according to the superimposed slab layout data, the following steps are included: D1. Construct a sketch plane, randomly generate a reference point in the sketch plane, and use the reference point as the point corresponding to the base point.

[0016] D2. In the feature code sequence, the length value and the angle value are extracted in sequence according to the sequence of arrangement of the feature code units, and the position points corresponding to the movement position of the moving point are determined in the sketch plane according to the reference point, the length value and the angle value, and the superimposed plate sketch corresponding to each rectangular area is constructed according to the position points.

[0017] D3. Construct the BIM 3D model of the superimposed slab based on the superimposed slab sketch.

[0018] Further, the reference point is located outside the range of the laminated plate layout drawing.

[0019] Furthermore, when a moving point is set on the boundary of the recognition object, the starting position of the moving point is a corner of the boundary of the recognition object.

[0020] Furthermore, the first client is also used to determine whether there is a situation where the boundary parts between the rectangular areas overlap according to the feature code sequence. If so, the corresponding two rectangular areas are marked as a fitting relationship, otherwise they are marked as a spacing relationship.

[0021] The first client is also used to verify the fitting relationship and spacing relationship between the rectangular areas with the material purchaser. If the verification is correct, the composite board layout data is sent to the data center.

[0022] Furthermore, the first client is also used to verify each identified rectangular area with the material purchaser, and if the verification is correct, the composite plate layout data is sent to the data center.

[0023] Furthermore, the first client is also used to save the feature code sequence. The data center is also used to send the feature code sequence to the second client, so that the composite board manufacturer can determine the matching relationship with the material purchaser through the feature code sequence.

[0024] Furthermore, the first client is also used to determine the workload of hoisting the composite plate according to the specific value of the unit distance and the length of the characteristic code sequence.

[0025] The first client saves a reference threshold value, and when the workload of hoisting the composite slab is greater than the reference threshold value, a prompt is sent to the material purchaser.

[0026] Furthermore, in D2, when the data center determines each location point, if the distance between two adjacent location points is greater than the unit distance, a data error prompt is issued.

[0027] The beneficial effects of the technical solution of the embodiment of the present invention include: The Web-based and BIM-based prefabricated composite slab engineering scheme generation system provided by the embodiment of the present invention sets up a data center, transfers the BIM three-dimensional model and construction of the composite slab, and the confirmation of the concrete demand data and the steel demand data to the data center, which can reduce the workload of the material purchaser and the composite slab manufacturer, so that the material purchaser can focus on the scheme design, and the composite slab manufacturer can focus on product production. The data center is maintained by a dedicated supplier, so that one person is responsible for one task, which can effectively improve the accuracy of procurement information transmission.

[0028] In general, the Web- and BIM-based prefabricated composite panel engineering plan generation system provided by the embodiment of the present invention can effectively improve the effectiveness and accuracy of information transmission between material purchasers and composite panel manufacturers, and can help composite panel manufacturers shorten production preparation time, effectively improving the timeliness of product delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic diagram for obtaining the length and angle values ​​of a connecting line.

[0031] Description of reference numerals: 100-layout drawing of superimposed plate; 200-reference plane; P-reference point; y-rectangular area; d-moving point; L-connecting line. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0036] As shown in this specification and claims, unless the context clearly provides an example, the words "a", "an", "the", etc. do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0037] The flowcharts used in this specification are used to illustrate the operations performed by the system according to the embodiments of this specification. It is understood that the operations of each step are not necessarily performed precisely in order. On the contrary, the steps can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0038] The inventors of this application have found that, currently, in the customized production of composite panels, the reasons for the high communication costs for the material purchaser and the composite panel manufacturer include but are not limited to: the material purchaser has defects in the drawings when sending them, and the composite panel manufacturer has errors in the content of the drawings after opening them due to software problems. The emergence of these situations easily leads to the need for constant communication and confirmation between the relevant personnel of both parties. In addition, the effectiveness of remote communication is low. In actual work, it often happens that the material purchaser needs to send specialists to the manufacturer for on-site communication or on-site production guidance. This results in very high communication costs (including time costs and labor costs) for both parties, and directly affects the timeliness of product delivery.

[0039] In order to overcome the deficiencies in the prior art, the present embodiment provides a Web- and BIM-based prefabricated composite panel engineering solution generation system, the system comprising: a first client, a data center and a second client.

[0040] The first client and the second client are both connected to the data center via web network communication.

[0041] The first client is used by the material purchaser to upload the composite board layout drawing 100 to obtain the composite board layout data and send the composite board layout data to the data center.

[0042] The data center is used to construct a superimposed slab BIM three-dimensional model based on the superimposed slab layout data, and to determine the superimposed slab concrete demand data and steel bar demand data based on the superimposed slab BIM three-dimensional model.

[0043] The data center is also used to send the composite slab BIM 3D model, concrete demand data and steel demand data to the second client. The second client is used by the composite slab manufacturer, so that the composite slab manufacturer can directly carry out the composite slab production work according to the composite slab BIM 3D model, concrete demand data and steel demand data sent by the data center, which is more intuitive and helps to shorten the preparation time of the composite slab manufacturer before production.

[0044] In this solution, by setting up a data center, the BIM 3D model and construction of the composite slab, as well as the confirmation of the concrete demand data and the steel demand data are transferred to the data center, which can reduce the workload of the material purchaser and the composite slab manufacturer, allowing the material purchaser to focus on the scheme design and the composite slab manufacturer to focus on product production. The data center is maintained by a dedicated supplier, so that one person can do one thing at a time, which can effectively improve the accuracy of procurement information transmission.

[0045] In general, the Web- and BIM-based prefabricated composite panel engineering plan generation system provided in this embodiment can effectively improve the effectiveness and accuracy of information transmission between material purchasers and composite panel manufacturers, and can help composite panel manufacturers shorten production preparation time, effectively improving the timeliness of product delivery.

[0046] It should be noted that when the data center constructs the BIM three-dimensional model of the composite slab, the reinforcement arrangement rules of the composite slab can be preset according to actual needs.

[0047] In order to further improve the accuracy of procurement information transmission, in this embodiment, the composite plate layout data includes: a feature code sequence.

[0048] When the first client obtains the feature code sequence, it executes the identification process. The identification process includes the following steps: S1, placing the laminate layout drawing 100 into a reference plane 200, that is, placing the laminate layout drawing 100 into a two-dimensional plane, and randomly generating a reference point P in the reference plane 200. Figure 1 shown.

[0049] It is understood that the stacking plate layout drawing 100 needs to be accompanied by the size information of the stacking plate. The size information can be recorded separately in a computer-readable form, or can be marked in the stacking plate layout drawing 100 in a computer-readable form, but is not limited thereto.

[0050] The stacking plate layout drawing 100 may be a CAD two-dimensional drawing or a two-dimensional picture, and is not limited thereto. In the case of using a CAD two-dimensional drawing, the first client may identify the stacking plate layout drawing 100 by using a method that can read the CAD two-dimensional drawing. In the case of using a two-dimensional picture, an image recognition method may be used to identify the stacking plate area in the stacking plate layout drawing 100.

[0051] S2. Determine each rectangular area y corresponding to the laminated plate in the laminated plate layout diagram 100, and select a rectangular area y as an identification object.

[0052] S3. Set a moving point d on the boundary of the identified object, and construct a line L between the moving point d and the reference point P. In the process of unidirectional movement of the moving point d along the boundary of the identified object, record the length and angle of the line L every time the moving point d moves a unit distance, and when the moving point d reaches each corner of the identified object. Until the moving point d completes a circle along the boundary of the identified object. Among them, the unit distance can be flexibly set to its specific value according to actual needs. The smaller the value of the unit distance, the higher the recognition accuracy. It should be noted that the angle value of the line L can be determined based on the two-dimensional coordinates established with the reference point P as the origin, and is not limited to this.

[0053] S4, taking another rectangular area y closest to the original recognition object as a new recognition object, and repeating S3 until all rectangular areas y are traversed. In this way, the length and angle values ​​of the connecting line L when the moving point d moves on the boundaries of all rectangular areas y can be collected, thereby representing the rectangular area y (i.e., the layout area of ​​the superimposed plate).

[0054] S5. Create a feature code sequence, which includes several feature code units arranged in order. The length value and angle value belonging to the same connecting line L are stored in the same feature code unit. It should be noted that the "same connecting line L" in this application refers to the connecting line L corresponding to the moving point d at the same position. When the moving point d moves along the boundary of the identification object, the position of the moving point d changes. The connecting line L after the position of the moving point d changes no longer belongs to the original connecting line L, that is, after the position of the moving point d changes, it belongs to a different connecting line L. In addition, for moving points d on different rectangular areas y, they do not belong to the same connecting line L.

[0055] In addition, the length values ​​and angle values ​​are sequentially saved in each feature code unit in the order in which they are generated, and each feature code unit only saves one set of length values ​​and angle values. That is to say, for the rectangular area y that is first used as the recognition object, the length value and angle value of the corresponding line L are first saved in the feature code sequence, and for the same rectangular area y, the length value and angle value collected first are first saved in the feature code sequence.

[0056] Through this design, the recognition of the superimposed plate layout drawing 100 can be completed on the first client, and the graphic information of the superimposed plate layout drawing 100 can be converted into feature code information. By sending the feature code sequence to the data center instead of sending the original superimposed plate layout drawing 100 to the data center, the trouble caused by errors in opening the drawing can be avoided.

[0057] In addition, replacing the stacking plate layout diagram 100 with a feature code sequence as an information transmission carrier can effectively achieve information lightweighting and reduce the transmission burden.

[0058] Correspondingly, when the data center constructs the BIM three-dimensional model of the superimposed slab based on the superimposed slab layout data, the following steps are included: D1. Construct a sketch plane, randomly generate a reference point in the sketch plane, and use the reference point as the point corresponding to the reference point P.

[0059] D2. In the feature code sequence, the length value and the angle value are extracted in sequence according to the order in which the feature code units are arranged, and the various position points corresponding to the movement position of the moving point d are determined in the sketch plane according to the reference point, the length value and the angle value. That is to say, when the data center constructs the BIM three-dimensional model of the superimposed plate, it takes the reference point as the reference, and uses the length value and the angle value recorded in the feature code sequence to invert the position points corresponding to the movement position of the moving point d during the movement process, thereby restoring the movement of the moving point d in the data center. In this way, the data center can construct a superimposed plate sketch corresponding to each rectangular area y based on these restored position points. The size and layout of each superimposed plate in the superimposed plate sketch constructed in this way are the same as the original superimposed plate layout diagram 100, thereby realizing the restoration of the superimposed plate layout diagram 100 in the data center.

[0060] D3. Based on the above constructed superimposed slab sketch, the superimposed slab BIM three-dimensional model can be constructed according to the superimposed slab sketch.

[0061] Through this design, the data center can accurately restore the content in the composite plate layout diagram 100 according to the feature code sequence, thereby achieving data lightweight while ensuring the accuracy of modeling.

[0062] Optionally, when generating the reference point P, the generation range of the reference point P may be limited to outside the range of the superimposed plate layout drawing 100 .

[0063] Further optionally, when a moving point d is set on the boundary of the identified object, the starting position of the moving point d is a corner of the boundary of the identified object.

[0064] Furthermore, the first client is also used to determine whether there is a situation where the borders between the rectangular areas y overlap according to the feature code sequence. For example, if the edges of the two superimposed plates are fitted, the border lines of the two rectangular areas y corresponding to the two superimposed plates will overlap partially. Then, when the moving point d moves on the borders of the two rectangular areas y, the moving point d will definitely repeatedly pass through the overlapping parts of the border lines. In the feature code sequence, it will be reflected that some angle values ​​and length values ​​in the two rectangular areas y are exactly the same, or the corresponding moving point d positions are located on the same line segment.

[0065] Through the above judgment, if there is a fit situation, the corresponding two rectangular areas y are marked as a fit relationship, otherwise they are marked as a spacing relationship.

[0066] The first client is also used to display and verify the fitting relationship and spacing relationship between the rectangular areas y to the material purchaser. If the verification is correct, the composite board layout data is sent to the data center.

[0067] In this case, the first client can now perform local verification on the superimposed plate layout drawing 100, especially by uploading the superimposed plate layout drawing 100 in the form of a two-dimensional picture. Local verification can effectively eliminate errors in image recognition, thereby ensuring the accuracy of data transmitted outward.

[0068] Furthermore, the first client is also used to display and verify each identified rectangular area y to the purchaser. If the verification is correct, the layout data of the superimposed plate is sent to the data center. By verifying each identified rectangular area y, it is possible to effectively avoid the omission of rectangular area y during the identification process and avoid the error in the identification of the position of rectangular area y. When the number and position of rectangular area y are correct, the identification of the number and position of the superimposed plate is correct. The rectangular area y is verified and confirmed together with the fitting relationship and spacing relationship, which can effectively improve the accuracy of data transmission.

[0069] Furthermore, the first client is also used to save the feature code sequence. The data center is also used to send the feature code sequence to the second client, so that the composite board manufacturer can determine the matching relationship with the purchaser through the feature code sequence.

[0070] Through this design, the feature code sequence can not only be used as a carrier for transmitting composite plate procurement data, but also as a basis for order matching between the purchaser and the composite plate manufacturer. Since the reference point P is randomly generated, the feature code sequence has a high uniqueness. Using the feature code sequence as a basis for order matching between the purchaser and the composite plate manufacturer can effectively reduce the probability of order management errors.

[0071] Furthermore, the first client is also used to determine the workload of hoisting the composite plate according to the specific value of the unit distance and the length of the characteristic code sequence.

[0072] When the specific value of the unit distance is constant, the longer the length of the characteristic code sequence is, the more the number of composite plates is and / or the larger the total area is, and the greater the subsequent lifting workload of the composite plates will be.

[0073] When the length of the characteristic code sequence is constant, the larger the specific value of the unit distance is, the more the number of composite plates is and / or the larger the total area is, and the greater the subsequent lifting workload of the composite plates will be.

[0074] The first client saves a reference threshold value, and when the workload of hoisting the composite slab is greater than the reference threshold value, a prompt is sent to the purchaser.

[0075] In some special construction environments or situations, the resources for lifting building materials may be relatively scarce, which makes it convenient to provide auxiliary reminders to the purchaser to avoid the problem of mismatch between the design plan and the actual construction capacity.

[0076] Furthermore, in D2, when the data center determines each location point, if the distance between two adjacent location points is greater than the unit distance, it means that other location points may be missing between the two adjacent location points. This may be caused by the first client missing the length value and angle value of some connecting lines L when generating the feature code sequence, or it may be caused by the data center omission when extracting the length value and angle value from the feature code sequence, or it may be caused by data transmission errors when the first client sends the feature code sequence to the data center. These will affect the accuracy of the composite slab BIM three-dimensional model, concrete demand data and steel demand data.

[0077] If the above situation occurs, the data center will send a data error prompt to the management personnel to facilitate problem troubleshooting.

[0078] In summary, the Web-based and BIM-based prefabricated composite panel engineering solution generation system provided by the embodiment of the present invention can effectively improve the effectiveness and accuracy of information transmission between the purchaser and the composite panel manufacturer, and can help the composite panel manufacturer shorten the production preparation time, effectively improving the timeliness of product delivery. By using feature code sequences as information carriers, the system also plays the role of: data lightweight, accurate transmission of procurement information, local self-checking of purchaser drawings, assessment of composite panel hoisting workload, and accurate management of composite panel manufacturer orders.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A Web-based and BIM-based prefabricated composite slab engineering scheme generation system, characterized in that: include: A first client, a data center, and a second client; The first client and the second client are both connected to the data center via web network communication; The first client is used to upload a superimposed plate layout diagram to obtain superimposed plate layout data and send the superimposed plate layout data to the data center; The data center is used to construct a superimposed slab BIM three-dimensional model according to the superimposed slab layout data, and determine the superimposed slab concrete demand data and steel demand data according to the superimposed slab BIM three-dimensional model; the data center is also used to send the superimposed slab BIM three-dimensional model, the concrete demand data and the steel demand data to the second client; Among them, the first client is used by the material purchaser, and the second client is used by the composite board manufacturer.

2. The Web-based and BIM-based prefabricated composite slab engineering scheme generation system according to claim 1 is characterized in that: The stacked plate arrangement data includes: a feature code sequence; When the first client obtains the feature code sequence, the first client performs an identification process; the identification process includes the following steps: S1, placing the stacked plate layout drawing into a reference plane, and randomly generating a reference point in the reference plane; S2, determining each rectangular area corresponding to the laminated plate in the laminated plate layout diagram, and selecting one of the rectangular areas as an identification object; S3, setting a moving point on the boundary of the identified object, and constructing a line between the moving point and the reference point; when the moving point moves unidirectionally along the boundary of the identified object, the length value and the angle value of the line are recorded every time the moving point moves a unit distance, and when the moving point reaches each corner of the identified object; until the moving point completes a circle along the boundary of the identified object; S4, taking another rectangular area closest to the recognition object as the new recognition object, and repeatedly executing S3 until all the rectangular areas are traversed; S5. Create the feature code sequence, which includes a plurality of feature code units arranged in sequence; save the length value and the angle value belonging to the same connecting line in the same feature code unit, and save them in sequence in each feature code unit according to the generation order of the length value and the angle value.

3. The Web-based and BIM-based prefabricated composite slab engineering scheme generation system according to claim 2 is characterized in that: When the data center constructs the BIM three-dimensional model of the superimposed slab according to the superimposed slab layout data, the following steps are included: D1. construct a sketch plane, randomly generate a reference point in the sketch plane, and use the reference point as a point corresponding to the reference point; D2. In the feature code sequence, the length value and the angle value are sequentially extracted according to the order in which the feature code units are arranged, and each position point corresponding to the moving position of the moving point is determined in the sketch plane according to the reference point, the length value and the angle value, and a sketch of the superimposed plate corresponding to each of the rectangular areas is constructed according to the position points; D3. Construct the BIM three-dimensional model of the composite slab according to the composite slab sketch.

4. The Web-based and BIM-based prefabricated composite slab engineering scheme generation system according to claim 2 is characterized in that: The reference point is located outside the range of the laminated plate layout diagram.

5. The Web-based and BIM-based prefabricated composite slab engineering scheme generation system according to claim 2 is characterized in that: When the moving point is set on the boundary of the recognition object, the starting position of the moving point is a corner of the boundary of the recognition object.

6. The Web-based and BIM-based prefabricated composite slab engineering scheme generation system according to claim 2 is characterized in that: The first client is further used to determine whether there is a situation where the boundary parts of the rectangular areas overlap according to the feature code sequence; if so, the corresponding two rectangular areas are marked as being in a fitting relationship, otherwise they are marked as being in a spacing relationship; The first client is also used to verify the fitting relationship and the spacing relationship between the rectangular areas with the material purchaser, and if the verification is correct, the composite board layout data is sent to the data center.

7. The Web-based and BIM-based prefabricated composite slab engineering scheme generation system according to claim 2 is characterized in that: The first client is also used to verify each of the identified rectangular areas with the material purchaser, and if the verification is correct, the composite board layout data is sent to the data center.

8. The Web-based and BIM-based prefabricated composite slab engineering scheme generation system according to claim 2 is characterized in that: The first client is also used to save the feature code sequence; the data center is also used to send the feature code sequence to the second client, so that the composite board manufacturer can determine the matching relationship with the material purchaser through the feature code sequence.

9. The Web-based and BIM-based prefabricated composite slab engineering scheme generation system according to claim 2, characterized in that: The first client is also used to determine the workload of hoisting the composite board according to the specific value of the unit distance and the length of the characteristic code sequence; The first client stores a reference threshold value, and when the workload of hoisting the composite plate is greater than the reference threshold value, a prompt is sent to the material purchaser.

10. The Web-based and BIM-based prefabricated composite slab engineering scheme generation system according to claim 3, characterized in that: In D2, when the data center determines each of the location points, if the distance between two adjacent location points is greater than the unit distance, a data error prompt is issued.

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