Design method based on BIM model

Abstract

The invention provides a design method based on a BIM model, and relates to the technical field of building design. The method comprises the following steps: constructing a component library of a BIM model, wherein the component library is used for determining that each component used in the BIM model meets a target construction standard; determining a drawing standard and a deepening direction of the building project based on the target construction standard; building a BIM model of the construction project based on the component library, and performing deepening processing on nodes in the BIM model based on the deepening direction, and obtaining a target BIM model under the condition that the deepening processing is completed; and receiving attribute information of a drawn drawing, and generating a construction drawing conforming to the drawing output standard based on the target BIM model. According to the method, the technical concept of forward drawing output can be achieved, the homology and consistency of design data are kept, and therefore the accuracy of produced design drawings can be improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of architectural design, and particularly relates to a design method based on a BIM model. BACKGROUND

[0002] In the field of architectural engineering design, traditional 2D design drawing generation methods mainly include two technical routes. The first one is a CAD-based design mode, in which a designer draws by combining lines in AutoCAD or other two-dimensional drawing software. The second one is a BIM reverse drawing mode, in which a designer draws two-dimensional scheme drawings first, and then creates a BIM model according to the drawings to verify the drawings.

[0003] In the above two 2D drawing generation methods, whether CAD-based design or BIM reverse drawing, a fundamental contradiction is generated, that is, most design decisions are determined in the initial stage of two-dimensional drawings, and when the model detects collision problems such as pipeline crossing structural beams, the designer often chooses to make local compromise adjustments at the model level instead of re-optimizing the two-dimensional drawings. There is an essential difference between the expression of two-dimensional drawings and the entity pipeline in three-dimensional models. This two-dimensional expression and three-dimensional model sectioning result in that the model collision checking result cannot be completely mapped to the construction drawings, and therefore, the accuracy of the design drawings is low. SUMMARY

[0004] The application provides a design method based on a BIM model, which generates 2D design drawings of a building project through a forward drawing technical concept after 3D modeling of the building project, and can solve the inconsistency problem in spatial coordination, thereby improving the accuracy of the produced 2D design drawings.

[0005] In a first aspect, the application provides a design method based on a BIM model, including: constructing a component library of a BIM model, the component library being used to determine that each component used in the BIM model meets a target construction standard; determining drawing standards and deepening directions of a building project based on the target construction standard; constructing a BIM model of the building project based on the component library, and deepening nodes in the BIM model based on the deepening directions, to obtain a target BIM model after deepening is completed; receiving attribute information of a drawing, and generating construction drawings meeting the drawing standards based on the target BIM model; wherein the attribute information includes a sectioning position parameter of the BIM model, and the construction drawings are plan views or elevation views of a sectioning position corresponding to the attribute information.

[0006] According to one embodiment of the present application, the BIM model of the construction project is constructed based on the component library, and the nodes in the BIM model are deepened based on the deepening direction parameter, and the target BIM model is obtained after the deepening is completed, comprising: constructing the BIM model of the construction project based on the component library, and determining the classification result of each node in the BIM model based on the component connection relationship and the functional attribute in the BIM model; creating a parameterized node family, dynamically reconstructing the node geometry based on the target construction standard, adjusting the bearing capacity of the node in each category, so that the node meets the construction requirements of the corresponding category; performing node construction refinement design on the BIM model; performing conflict detection, node performance verification and constructability verification on the BIM model, so as to obtain the target BIM model after all verifications are passed.

[0007] According to one embodiment of the present application, the drawing standard and the deepening direction of the construction project are determined based on the target construction standard, comprising: analyzing the pre-stored construction specification database to generate layer naming rules and annotation format control parameters; calling a drawing frame template library based on the control parameters to generate an automatic drawing template containing a title bar parameterized component and a symbol library identification rule.

[0008] According to one embodiment of the present application, the attribute information of the drawing is received, and the construction drawing conforming to the drawing standard is generated based on the target BIM model, comprising: creating a section surface corresponding to the attribute information in the target BIM model according to the attribute information; determining the section height based on the elevation parameter in the attribute information, and filtering the components in the target BIM model based on the section height to obtain the effective components corresponding to the section height; generating the construction drawing based on the geometric projection of the effective components on the section surface.

[0009] According to one embodiment of the present application, the method further comprises: mapping the construction drawing into a CAD layer; checking and verifying the CAD layer based on a preset rule checking script to determine whether the target BIM model contains disabled materials; comparing the geometric consistency of the target BIM model and the CAD layer.

[0010] According to one embodiment of the present application, the method further comprises: in the case that there is a complex node in the target BIM model, generating a three-dimensional section detail drawing corresponding to the complex node in batches through a Dynamo script.

[0011] According to one embodiment of the present application, the deepening direction comprises at least one of civil structure deepening, steel structure deepening, curtain wall deepening, elevator deepening, mechanical and electrical professional deepening, fine decoration deepening, landscape greening deepening and pipeline comprehensive deepening.

[0012] In a second aspect, the present application also provides a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method of the above-mentioned embodiments when executing the computer program.

[0013] Compared with the prior art, the present application has the beneficial effects that: by providing a BIM-based forward design method, a model-driven technical route is constructed to build a solution from a digital component library to accurate construction drawings. The present scheme is different from the traditional reverse drawing design method. Through the process of forward design, a parameterized component library conforming to the construction standard is first established to ensure that each building element meets the specification requirements from the source; then digital drawing standards are formulated based on project requirements, and drawing rules are coded into system executable parameters; then full professional integration and node deepening are completed in a three-dimensional environment, and construction details are optimized through intelligent algorithms; finally, construction drawings dynamically associated with the model are automatically generated based on the section parameters. This design method maintains the homogeneity and consistency of design data, thereby improving the accuracy of the produced 2D design drawings. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A step schematic diagram of the BIM model-based design method provided for the embodiments of the present application.

[0015] Figure 2 A flowchart of the BIM model-based design method provided for the embodiments of the present application.

[0016] Figure 3 Some effect example diagrams of forward drawing provided for the present application.

[0017] Figure 4 A target BIM model schematic diagram of a building project provided for the embodiments of the present application.

[0018] Figure 5 An elevation view of a building project provided for the embodiments of the present application.

[0019] Figure 6 A basement plan view of a building project provided for the embodiments of the present application.

[0020] Figure 7 A detail design diagram of a building project provided for the embodiments of the present application.

[0021] Figure 8 A detail node design diagram of a building project provided for the embodiments of the present application.

[0022] Figure 9The three-dimensional cut detail drawing provided by the embodiment of the present application combines construction drawings and models under complex nodes. DETAILED DESCRIPTION

[0023] The present application will be further described in conjunction with test examples and specific embodiments. However, it should not be understood as limiting the scope of the above-mentioned subject matter of the present application to the following examples only, and any technology implemented based on the content of the present application falls within the scope of the present application.

[0024] In the description of the specific embodiments of the present application, the orientation or position relationship terms such as "up", "down", "left", "right", "center", "inner", "outer", "side" and the like appear without special indication, which are expressed based on the orientation or position relationship shown in the drawings, or the orientation or position relationship used when the product / device / apparatus is placed. These orientation or position relationship terms are only for the convenience of describing the present application scheme or simplifying the description in the specific embodiments, for the convenience of the technical personnel to quickly understand the scheme, and cannot be understood as indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as limiting the present application.

[0025] In the description of the embodiments of the present application, the technical terms "first", "second" and the like only distinguish one entity or operation from another entity or operation, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two and more than two, unless otherwise specifically limited.

[0026] Reference to "embodiments" in this document means that the specific features, structures or properties described in conjunction with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. The skilled person explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0027] Please refer to Figure 1 and Figure 2 , Figure 1 The step schematic diagram of the design method based on the BIM model provided by the embodiment of the present application. Figure 2A flowchart of a design method based on a BIM model provided in an embodiment of the present application is shown. The traditional drawing method of construction drawings is reverse drawing, which follows the reverse data flow of "scheme sketch → two-dimensional construction drawing → BIM modeling verification". The setting personnel first complete 90% of the design decision in a two-dimensional environment such as AutoCAD, and then perform conflict detection and spatial coordination through the BIM model in the later stage to form a design closed loop. In this mode, the three-dimensional model is essentially a derivative of two-dimensional drawings rather than a design carrier. The design concept of the present application is forward drawing. The concept of forward drawing is proposed with respect to reverse drawing. All design decisions are directly completed in a BIM environment such as Revit, and construction drawings are automatically generated from the model through a sectioning algorithm, so that the drawings and the model are consistent. The overall idea of forward drawing is to first model a building project in 3D, and then output the 2D design drawings of the building project through the completed BIM model. The spatial inconsistency problem can be solved in terms of spatial coordination, thereby improving the accuracy of the produced 2D design drawings. Please refer to Figure 3 , Figure 3 Some effect example diagrams of forward drawing provided in the present application are shown.

[0028] Based on this, the specific implementation process of the design method based on the BIM model in an embodiment of the present application includes: establishing a component library conforming to the construction standard → constructing drawing standards based on the construction standard → determining the deepening design direction of the construction project → performing model deepening design → model node deepening → issuing plane and elevation node diagrams → exporting CAD → performing review and verification → delivering digital files. Based on the implementation process, the design method based on the BIM model provided in the present application can include: S1, a component library of a BIM model is constructed. The component library is used to determine that each component used in the BIM model conforms to a target construction standard.

[0029] The BIM model refers to a building information model containing geometric and non-geometric information created by three-dimensional digital technology. In an embodiment of the present application, it can be constructed by Revit software. The component library, as the core resource of BIM technology, refers to a collection of digital building elements organized according to standardized rules. The component library conforming to the construction standard is the component library in Revit. The target construction standard is the compliance benchmark for the construction of the component library, including mandatory specifications (such as GB50017 steel structure design specification, which specifies the bearing capacity and construction requirements), local regulations (such as the evaluation standard for prefabricated buildings in a certain region), and enterprise methods (such as the prefabricated component hoisting standard of a certain construction group, which reflects special technology).

[0030] The purpose of establishing a component library conforming to the construction standard is to ensure that the components in the BIM model conform to the target construction standard of the construction site. The operation of constructing the component library of the BIM model can specifically include collecting the construction site material standard; creating a parameterized family file in Revit, embedding the properties of the construction standard such as size, load, fire rating, etc.; adjusting the component details, verifying the component carrying capacity, etc.

[0031] S2, determining the drawing standard and deepening direction of the building project based on the target construction standard.

[0032] The drawing standard includes layer naming, annotation format, drawing scale, frame and identification style, etc. The purpose of the deepening direction is to determine the technical route according to the project type and the owner's demand of the building project, which can specifically include: determining the key target (such as shortening the construction period, reducing the operation and maintenance cost), formulating multi-specialty collaborative design rules (such as periodic cross-specialty collision detection, etc.).

[0033] For example, the way to determine the drawing standard of the building project can include: Analyzing the pre-stored construction specification database to generate layer naming rules and annotation format control parameters; calling the frame template library based on the control parameters to generate an automatic drawing template containing a title bar parameterized component and a symbol library identification rule.

[0034] S3, constructing the BIM model of the building project based on the component library, and deepening the nodes in the BIM model based on the deepening direction, to obtain the target BIM model in the case of completing the deepening processing.

[0035] The deepening direction refers to the model optimization dimension system determined according to the project characteristics and construction requirements of the building project, including at least one of the following: civil structure deepening, steel structure deepening, curtain wall deepening, elevator deepening, mechanical and electrical deepening, fine decoration deepening, landscape greening deepening and pipeline comprehensive deepening. The deepening processing is a specific technical operation performed according to the determined deepening direction. Please refer to Figure 4 , Figure 4 The target BIM model of the building project provided by the embodiment of the present application is shown in the figure. After completing the deepening processing of the model, a target BIM model similar to Figure 4 is obtained. For example, the step of deepening processing in step S3 includes: The BIM model of the building project is constructed based on the component library, and the classification result of each node in the BIM model is determined based on the component connection relationship and the functional attribute in the BIM model. Among them, the component connection relationship in the BIM model can be scanned through topological analysis first, and three types of key features are extracted: geometric features such as intersection angle, connection surface shape, mechanical features such as bending moment transmission mode, and functional features such as fire compartment attribute. For example, when the connection between the steel beam and the concrete column is detected, the classification of the component is comprehensively determined by combining the seismic grade parameter in the functional feature and the shear key setting condition in the geometric feature. Further, the classification result is formed into a structured list, such as dividing the node into a combination category such as "steel structure rigid connection-seismic grade second level-space special shape", to provide accurate targeting for subsequent parameterization processing.

[0036] A parameterized node family is created, the node geometry is dynamically reconstructed based on the target construction standard, the bearing capacity of each node in each category is adjusted, and the node meets the construction requirements of the corresponding category; for example, the corresponding constraint condition can be automatically loaded according to the node category by calling the parameterized template in the component library. For example, for the seismic node, the corresponding weld reinforcement coefficient is embedded into the seismic node based on the GB50011 in the "Code for Seismic Design of Buildings"; for the fireproof node, the fireproof coating thickness calculation formula is integrated into the fireproof node based on the GB50016 in the "Code for Design of Building Fire Protection". The reconstruction process can use a constraint solving algorithm. For example, when a steel component with a beam height of 400mm is input, the size of the connecting plate is automatically calculated and adjusted to 280mm (0.7 times the beam height) as required by the specification, while the bolt hole distance is kept consistent with the construction requirement of 1.5d. This dynamic adjustment can make each node meet the universal standard and adapt to specific engineering conditions.

[0037] The BIM model is subjected to node construction refinement design. For example, the refinement design can specifically include: performing three-dimensional lofting operation for steel structure nodes to generate welding detail drawing containing details such as bevel angle and backing plate setting; for concrete nodes, reinforcement arrangement optimization is performed to automatically avoid the position of prestressed sleeve; temporary hoisting support points are preset at prefabricated component nodes, etc.

[0038] The BIM model is subjected to conflict detection, node performance verification and constructability verification to obtain the target BIM model under the condition that all verifications are passed.

[0039] Among them, the conflict detection is to eliminate the spatial interference between professions, through the three-dimensional space topology analysis algorithm, to scan the physical occupation relationship between each professional component, to identify the area that does not meet the construction gap requirement, and to distinguish hard collision (entity intersection) and soft collision (operation space is insufficient), and to give priority weight to different types of conflicts. The node performance verification is to convert the design specification into a calculable parameterized rule, which can be calculated by establishing a multi-scale analysis model from the macro load transfer path to the micro local stress distribution, so as to evaluate the structural behavior of the node under extreme working conditions. The constructability verification is the digital pre-performance of the construction process, which checks the accessibility of the node assembly path, the feasibility of the temporary support and the rationality of the process connection by simulating the actual construction sequence. By using four-dimensional construction simulation technology, the key steps such as material hoisting, component positioning and connection operation can be dynamically displayed to identify potential process conflicts.

[0040] S4, receiving attribute information of the drawing, generating construction drawings conforming to the drawing standard based on the target BIM model.

[0041] Among them, the attribute information includes the section position parameters of the BIM model, and the construction drawing is a plan view or an elevation view corresponding to the section position of the attribute information.

[0042] For example, the specific way of S4 to generate construction drawings can include: According to the attribute information, a section surface corresponding to the attribute information is created in the target BIM model. After receiving the structured instruction containing the drawing type, view direction, elevation range and other attributes, the spatial section algorithm is activated in the BIM platform such as Revit, which automatically constructs an infinitely extended section plane based on the computational geometry principle according to the attribute parameters. For special needs (such as showing the three-dimensional structure of the stairwell), the system will generate complex section forms such as stepped section surfaces or rotating section surfaces. The section surface not only defines the view range, but also carries the reference information required for subsequent labeling, such as the section surface projection line as the starting point of dimension labeling.

[0043] The section height is determined based on the elevation parameter in the attribute information, and the components in the target BIM model are filtered based on the section height to obtain the effective components corresponding to the section height. Among them, the spatial filtering zone can be established according to the input elevation parameter, and the boundary volume detection is used to exclude irrelevant components in the target BIM model. A more detailed filtering level can be combined with professional attributes and stage attributes for composite screening. During the filtering process, special treatment is given to diagonal components that cross multiple elevations, and the effective cross section of the diagonal components on the section surface is calculated by a geometric intersection algorithm.

[0044] The construction drawing is generated based on the geometric projection of the effective component on the section plane. In the method, the parallel projection transformation is performed on the screened effective component, the two-dimensional geometric elements generated by the projection are labeled, and the dimension chain, elevation symbol and material code are automatically deployed according to the preset drawing standard, so that the complete drawing meeting the construction requirements is formed.

[0045] For example, referring to Figure 5 and Figure 6 , Figure 5 The elevation view of the building project provided by the embodiment of the application can generate the elevation view of the building project similar to Figure 5 when the section plane is the elevation of a certain elevation of the building project. Figure 6 The basement plan of the building project provided by the embodiment of the application can generate the plan of the building project similar to Figure 6 when the section plane is the plan of a certain elevation of the building project.

[0046] In addition to generating the elevation plan of the entire building project, the embodiment of the application can also generate the drawing of a detail or even a detail node in the building project. For example, referring to Figure 7 , Figure 7 The detail design drawing of the building project provided by the embodiment of the application further obtains the section detail by adding a section and adjusting the size of the section in the model or the plan. For example, referring to Figure 8 , Figure 8 The detail node design drawing of the building project provided by the embodiment of the application.

[0047] The advantage of the forward design used in the application is that: 1. The model can be optimized and deepened at the model level according to the local standards combined with the design optimization direction, so as to provide a model basis for the optimization direction decision, and avoid the subsequent work hindrance caused by the errors or ambiguities in the decision-making period.

[0048] 2. Information integration: the parameter data in the design will be recorded and extended throughout the process, including materials, sizes, construction stages, etc., to provide convenience and data support for subsequent construction, operation and maintenance, 4D, 5D simulation and other work of the building project.

[0049] 3. Information interconnection: the parameters and data generated or set in the design stage can be directly used for subsequent drawing issuance and construction, avoiding information distortion and loss.

[0050] 4. Efficient drawing: after specifying the drawing standard, the drawing can be automatically completed by selecting the required plan or section, reducing repetitive labor and human errors.

[0051] 5. Provide the basis for decision, can directly extract the bill of quantities, the corresponding parts list, etc., can be directly obtained the required construction list and procurement list, avoid human calculation error.

[0052] 6. Design intuitive and efficient with real-time, through the parameter adjustment of the model, can be directly adjusted in the collaborative optimization of each professional, to ensure the real-time of design optimization, reduce the workload of multiple meetings of design engineers.

[0053] 7. Model combined with drawings. After completing the drawing, the section view can be combined in the model. In the comparison of drawings and models, the actual construction guidance can be obtained.

[0054] In some embodiments, based on the specific implementation process of the BIM model-based design method, the method provided by the application can further include the step of performing review and verification, which can include: Map the construction drawing to the CAD layer. For example, a semantic mapping algorithm can be used to intelligently match the component category attributes in Revit (such as "structural column", "HV duct") to the preset CAD layer system according to professional dimensions, component types and state identifiers.

[0055] Check the CAD layer based on the preset rule script to determine whether the target BIM model contains prohibited materials. For example, by loading the prohibited material database of the location of the building project, the fill pattern and label information of the CAD layer can be scanned by the material tracking script to verify whether the target BIM model contains prohibited materials such as asbestos, high-volatile paint, etc.

[0056] Compare the geometric consistency of the target BIM model and the CAD layer. For example, a spatial topology comparison method can be used to establish a coordinate reference system for three-dimensional models and two-dimensional drawings, and a feature point extraction algorithm can be used to perform multi-dimensional comparison of contour consistency, label authenticity and spatial relationship verification between the target BIM model and the CAD layer to determine the consistency of each label point and the model.

[0057] In some embodiments, the method provided by the application can further include: In the case of complex nodes in the target BIM model, three-dimensional section detail drawings corresponding to the complex nodes can be generated in batches through the Dynamo script.

[0058] In the embodiments of the application, the complex nodes are key positions that have special construction requirements, multi-specialty intersection or significantly higher construction difficulty than conventional connections in building structures. Please refer to Figure 9 , Figure 9The three-dimensional cut detail drawing provided by the embodiment of the present application combines the construction drawing and the model under the complex node. Since the design drawing output in the present application is obtained by forward drawing, all drawings (plan, section, detail) are directly derived from the model. The drawing at the complex structure is also obtained by setting a section at this position. The understanding of the section by the site management personnel and the construction personnel is limited to two dimensions. However, by displaying the two-dimensional drawing and the three-dimensional model at the corresponding position, it can be directly seen how the two-dimensional drawing is obtained, and the understanding of the drawing and the guidance of the construction can be obtained.

[0059] In summary, the embodiment of the present application provides a forward design method based on BIM, a model-driven technical route, and a solution from a digital component library to accurate construction drawings. The present scheme is different from the traditional reverse drawing design method. Through the process of forward design, a parameterized component library conforming to the construction standard is first established to ensure that each building element meets the specification requirements from the source. Then, digital drawing standards are developed based on project requirements, and drawing rules are coded into system executable parameters. Next, full professional integration and node deepening are completed in a three-dimensional environment, and structural details are optimized through intelligent algorithms. Finally, construction drawings dynamically associated with the model are automatically generated based on the section parameters. This design method maintains the homogeneity and consistency of design data, thereby improving the accuracy of 2D design drawings.

[0060] Based on the same application concept, the embodiment of the present application further provides a computer device, which can include a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method described in the above description is implemented.

[0061] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A design method based on a BIM model, characterized by, The method comprises the following steps: a component library for constructing a BIM model is constructed, which is used to determine that each component used in the BIM model meets a target construction standard; drawing standards and deepening directions of a building project are determined based on the target construction standard; a BIM model of the building project is constructed based on the component library, and nodes in the BIM model are deepened based on the deepening directions, and a target BIM model is obtained after the deepening is completed; attribute information of a drawing is received, and construction drawings meeting the drawing standards are generated based on the target BIM model; wherein the attribute information includes a sectioning position parameter of the BIM model, and the construction drawings are plan views or elevation views of the sectioning position corresponding to the attribute information.

2. The method of claim 1, wherein, The method of constructing a BIM model of the building project based on the component library, and deepening nodes in the BIM model based on the deepening direction parameter, and obtaining a target BIM model after the deepening is completed, comprises the following steps: a BIM model of the building project is constructed based on the component library, and the classification results of each node in the BIM model are determined based on the component connection relationship and the functional attribute in the BIM model; a parameterized node family is created, the geometric morphology of the node is dynamically reconstructed based on the target construction standard, the bearing capacity of the node in each category is adjusted, and the node meets the construction requirements of the corresponding category; the BIM model is designed in detail in terms of node construction; the BIM model is subjected to conflict detection, node performance verification and constructability verification, so as to obtain the target BIM model after all verifications are passed.

3. The method of claim 1, wherein, The method of determining drawing standards and deepening directions of a building project based on the target construction standard comprises the following steps: analysis of a pre-stored construction specification database generates layer naming rules and label format control parameters; a drawing frame template library is called based on the control parameters to generate an automatic drawing template containing a title bar parameterized component and a symbol library identification rule.

4. The method of claim 1, wherein, The method of receiving attribute information of a drawing, and generating construction drawings meeting the drawing standards based on the target BIM model, comprises the following steps: a sectioning surface corresponding to the attribute information is created in the target BIM model according to the attribute information; a sectioning height is determined based on the elevation parameter in the attribute information, and the components in the target BIM model are filtered based on the sectioning height to obtain effective components corresponding to the sectioning height; the construction drawings are generated based on the geometric projection of the effective components on the sectioning surface.

5. The method according to claim 1 or 4, characterized in that, The method further comprises the following steps: the construction drawings are mapped to CAD layers; the CAD layers are checked and verified based on a pre-set rule checking script to determine whether the target BIM model contains disabled materials; the geometric consistency of the target BIM model and the CAD layers is compared.

6. The method of claim 1, wherein, The method further comprises the following steps: in the case that there is a complex node in the target BIM model, three-dimensional sectioning detail drawings corresponding to the complex node are generated in batches through a Dynamo script.

7. The method of claim 1, wherein, The deepening direction comprises at least one of civil structure deepening, steel structure deepening, curtain wall deepening, elevator deepening, electromechanical professional deepening, fine decoration deepening, landscape greening deepening and pipeline comprehensive deepening.

8. A computer device, comprising: The computer device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the method according to any one of claims 1 to 6 when executing the computer program.

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