CN115795631B - Method for acquiring building project BIM model, electronic equipment and storage medium - Google Patents
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Abstract
The invention provides a method for acquiring a building project BIM model, which comprises the following steps: the method comprises the steps of obtaining an integrity level list of a target building item, loading a first target BIM model text corresponding to the target building item in a preset loading model list, obtaining a first intermediate BIM model list, obtaining a first similarity list of different first intermediate BIM templates, obtaining a first intermediate BIM model with the smallest similarity priority as a specified BIM model, and obtaining a final BIM model based on the specified BIM model corresponding to the target building item, thereby obtaining the specified BIM model closest to the corresponding target BIM model text in each level of accuracy of obtaining the building item BIM model, and guaranteeing the accuracy of the final BIM model.
Description
Technical Field
The present invention relates to the field of BIM models, and in particular, to a method, an electronic device, and a storage medium for obtaining a building project BIM model.
Background
In terms of BIM, the American society of architects defines LOD as the degree of development/integrity of the BIM model, and all LOD levels of the BIM model express the degree of development expected at different stages of the building's full life cycle, with all levels defined as: LOD100 is a conceptual design phase, represented as the presence of a component, but does not show its shape, size, and precise location; LOD200 is a preliminary design stage in which model elements graphically represent a generic system, object, or component having an approximate number, size, shape, location, and orientation in a model. LOD300 is a deepened design phase in which model elements represent a particular system, object or component in the form of number, size, shape, location and orientation in the model; LOD350 is a specialized collaboration phase that models components in coordination with accessories or connected components; LOD400 is a construction diagram stage, has enough details and precision modeling, and contains information such as manufacturing, processing, installation and the like of components; LOD500 is the as built phase; only for field verification. However, in the practical use process, the BIM model designed by the designer often has inaccuracy after being loaded.
In the design process, modeling is performed by using a drawing recognition function of modeling software. However, by using the method for modeling, the drawing recognized by the design institute is required to be accurate enough, so that the drawing is accurate enough, and the functional requirement of automatically recognizing the corresponding structure by software is met.
Disclosure of Invention
Aiming at the technical problems, the invention adopts the following technical scheme: a method of obtaining a building project BIM model, the method comprising the steps of: s100, obtaining an integrity level list L= { L of the target building project 1 ，L 2 ，…，L j ，…，L n }，L j Is the j-th integrity level, the value range of j is 1 to n, n is the number of the integrity levels, wherein L j+1 Is greater than L j Is a function of the integrity of the system.
S200, obtaining a target building project L j Corresponding first target BIM model text.
S300, the first target BIM model text is displayed in a preset loading model list C= { C 1 ，C 2 ，…，C i ，，…，C m Loading in the first intermediate BIM model list A= { A 1 ，A 2 ，…，A i ，…，A m (wherein A) i Is the target BIM model at C i BIM model after being loaded, C i Is the i-th preset loading model, the value range of i is 1 to m, and m is the number of the preset loading models.
S400, obtaining A i Is the first similarity B of (2) i ={B i1 ，B i2 ，…，B ir ，…，B i(m-1) }，B ir Is A i And divide A i Similarity of the outer r first intermediate BIM model, and the value range of r is 1 to m-1.
S500, obtain B i Is of the first priority of (1)
Thereby acquiring a first priority list and taking a first intermediate BIM model with the minimum first priority as L j A corresponding specified BIM model, L j Corresponding appointed BIM model as target building project L j+1 Is a first basic BIM model of (c).
S600, based on target building project L n-1 Corresponding appointed BIM model, obtaining target building project L n The corresponding specified BIM model is used as a final BIM model corresponding to the target building project.
The invention has at least the following beneficial effects: based on S100-S600, the target building project L is obtained j The method comprises the steps of loading corresponding first target BIM model texts through different preset loading models, obtaining first intermediate BIM models, obtaining the priority of the similarity of the first target BIM models in a first similarity list, taking the first intermediate BIM model with the minimum priority as a basic BIM model of the next-stage precision of a target building project, and obtaining a final BIM model corresponding to the target building model.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for obtaining a building project BIM model according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
As shown in fig. 1, an embodiment of the present invention provides a method for obtaining a building project BIM model, the method including the steps of:
s100, obtaining an integrity level list L= { L of the target building project 1 ，L 2 ，…，L j ，…，L n }，L j Is the j-th integrity level, the value range of j is 1 to n, n is the number of the integrity levels, wherein L j+1 Is greater than L j Is a function of the integrity of the system.
Specifically, in the prior art, the integrity level of a target building project is divided into: LOD100, LOD200, LOD300, LOD350, LOD400, LOD500; optionally, in the present invention, the integrity level list l= { LOD200, LOD300, LOD350, LOD400} of the target building item.
S200, obtaining a target building project L j Corresponding first target BIM model text.
Specifically, the first target BIM model text is a non-three-dimensional model, such as a CAD drawn two-dimensional model.
S300, the first target BIM model text is displayed in a preset loading model list C= { C 1 ，C 2 ，…，C i ，，…，C m Loading in the first intermediate BIM model list A= { A 1 ，A 2 ，…，A i ，…，A m (wherein A) i Is the target BIM model at C i BIM model after being loaded, C i Is the i-th preset loading model, the value range of i is 1 to m, and m is the number of the preset loading models.
Specifically, the first target BIM model text is loaded in a preset loading model, for example, a CAD drawn two-dimensional model is converted into a three-dimensional model in a Revit.
S400, obtaining A i Is the first similarity B of (2) i ={B i1 ，B i2 ，…，B ir ，…，B i(m-1) }，B ir Is A i And divide A i Outer first rThe similarity of the intermediate BIM model, r, ranges from 1 to m-1.
S500, obtain B i Is of the first priority of (1)
Thereby acquiring a first priority list and taking a first intermediate BIM model with the minimum first priority as L j A corresponding specified BIM model, L j Corresponding appointed BIM model as target building project L j+1 Is a first basic BIM model of (c).
Specifically, the invention takes a first intermediate BIM model with the smallest priority in the first similarity as L j The corresponding specified BIM model may be understood that the first intermediate BIM model corresponding to the lowest priority in the first similarity indicates that the first intermediate BIM model and most of the first intermediate BIM models corresponding to the lowest priority are similar, and the situation that the error of the first intermediate BIM model loaded by the preset loading model is too large is excluded.
Further, the priority is used to characterize the degree of stability.
In another embodiment of the present invention, a first intermediate BIM model corresponding to the mode in the first similarity list may be used as L j A corresponding specified BIM model.
S600, based on target building project L n-1 Corresponding appointed BIM model, obtaining target building project L n The corresponding specified BIM model is used as a final BIM model corresponding to the target building project.
Based on S100-S600, the target building project L is obtained j Loading corresponding first target BIM model texts through different preset loading models so as to obtain first intermediate BIM models, obtaining the priority of the similarity of the first target BIM models in a first similarity list, taking the first intermediate BIM model with the minimum priority as a basic BIM model of the next-stage precision of a target building project so as to obtain a final BIM model corresponding to the target building model, obtaining a specified BIM model closest to the BIM model of the target BIM model in each integrity level as the specified BIM model of the integrity level, taking the specified BIM model of the integrity level as the basic BIM model of the next-stage precision,therefore, the appointed BIM model closest to the target BIM model is obtained in each level of accuracy of the building project BIM model, and the accuracy of the BIM model in the using process is ensured.
Further, the invention also comprises the following steps of obtaining a final BIM model of the associated building project:
s10, acquiring an associated building project L j And the corresponding second target BIM model text, wherein the associated building item and the target building item belong to the building item with the same function.
S20, obtaining L j And a corresponding specified loading model list, wherein the specified loading model list is determined based on the first similarity list B.
Specifically, S20 acquires the specified loading model list corresponding to the L-th precision level by:
s21, B i And marking the preset loading model corresponding to the similarity threshold value B ʹ larger than the preset similarity threshold value B ʹ as a specified loading model, and acquiring a specified loading model list.
Further, the preset similarity threshold B ʹ is an average value of the similarity list B.
S30, loading the second target BIM model text in a designated loading model to obtain L j Corresponding second intermediate BIM model list f= { F 1 ，F 2 ，…，F g ，…，F z }，F g Is the g second intermediate BIM model, the value range of g is 1 to z, and z is the number of the second intermediate BIM models.
S40, based on L j Corresponding second intermediate BIM model list, obtain F g And removing F g Second degree of similarity G of outer t second intermediate BIM model gt To obtain a second similarity list G g ={G g1 ，G g2 ，…，G gt ，…，G g（z-1） The value of t is in the range of 1 to z-1.
S50, obtaining F g Corresponding second priority
Thereby acquiring a second priority list and optimizing the secondThe second intermediate BIM model with the smallest first stage is taken as L j A corresponding second specified BIM model as an associated building item L j+1 Is a basic BIM model of (c).
Specifically, after S50, further comprising:
s51, acquiring the associated building project L j+1 And corresponding third target BIM model text.
Specifically, when the integrity level list l= { LOD200, LOD300, LOD350, LOD400} of the target building item, the building item L is associated in S51 j+1 The value is LOD400.
S53, loading the third target BIM model text in a preset loading model list C to obtain L j+1 Corresponding third intermediate BIM model list d= { D 1 ，D 2 ，…，D i ，…，D m Sum L j+1 Middle D i Corresponding third similarity list E i ={E i1 ，E i2 ，…，E ir ，…，E im（m-1） }，E ir Is D i And divide D i Similarity of outer rT third intermediate BIM model, D i Is the third target BIM model text at C i A third intermediate BIM model obtained by loading.
S55, obtaining E i Corresponding third priority
Thereby acquiring a third priority list and taking a third intermediate BIM model with the smallest third priority as an associated building item L j+1 A corresponding third specified BIM model.
Based on S10 to S50, when the related building project with the same function as the target building project is acquired, the appointed loading model is acquired through the first similarity in the target building project, the appointed loading model is used for loading the text of the second target BIM model instead of using all preset loading models, so that the consumption of operation resources is reduced, and the final BIM model corresponding to the related building project is acquired more rapidly under the condition of ensuring accuracy.
Because LOD200 is the preliminary design stage, LOD300 is the deepened design stage, LOD350 is the professional cooperation stage, LOD400 is the construction drawing stage, and LOD500 is the completion drawing stage in the BIM model, the influence of the preset loading model on the building project with the same function is basically the same, so that the influence on the loading accuracy is not great by using the specified loading model, and the consumption of resources is reduced.
In addition, in S400, the invention also comprises the step of obtaining A by the following steps i And divide A i Similarity B of outer rT first intermediate BIM model ir ：
S1, dividing A i Outer nth first intermediate BIM model and first intermediate BIM model A i And (3) comparing the BIM building models to obtain the first building similarity.
Specifically, divide A is first obtained i Outer nth first intermediate BIM model and first intermediate BIM model A i Geometric information of single component in (2), next to dividing A i Outer nth first intermediate BIM model and first intermediate BIM model A i The geometric information of the individual components, such as the length, width, height and area data of the individual components, are compared and calculated to obtain a first building similarity.
Further, divide A is obtained i Outer nth first intermediate BIM model and first intermediate BIM model A i Selecting one of the members as a reference, counting the shape distribution data, such as deflection angle, distance and thickness data, between the rest members and the reference, thereby completing the statistics of the shape distribution data between each member, and dividing A by A i Outer nth first intermediate BIM model and first intermediate BIM model A i The shape distribution of each member in (a) is calculated as the division A i Outer r first intermediate BIM model each component and first intermediate BIM model A i The geometric similarity of each component in the building is determined, thereby obtaining the first building similarity.
S2, dividing A i Outer nth first intermediate BIM model and first intermediate BIM model A i And comparing the BIM structure models to obtain the first structural similarity.
Specifically, in the case of division A i Outer nth first intermediate BIM model and first intermediate BIM model A i Selecting random points in the triangular surface of each component, and dividing A i Outer nth first intermediate BIM model and first intermediate BIM model A i Extracting a preset number of random points from the random points of each component, wherein the random points are used as a target BIM model and C i Is based on the point cloud data of the (a) and is divided by A based on a point cloud matching algorithm i Outer nth first intermediate BIM model and first intermediate BIM model A i Coordinate registration is carried out on the point cloud data of (a) to obtain A i A rotation matrix relative to the first target BIM model text.
Further, C i The position information of each component is multiplied by the rotation matrix, and C can be obtained i The registered position information of each component in the system is required to be divided by A i The registered position information of each component in the outer r first intermediate BIM model is calculated so as to facilitate the calculation of the position information except A i Outer nth first intermediate BIM model and first intermediate BIM model A i Is compared with the position information of the position information to obtain the division A i Outer r first intermediate BIM model each component and first intermediate BIM model A i And the position similarity between each component is obtained, so that the second similarity is obtained.
S3, dividing A i Outer nth first intermediate BIM model and first intermediate BIM model A i And comparing the BIM electromechanical models to obtain the first electromechanical similarity.
Specifically, divide A based on point cloud matching algorithm i Outer nth first intermediate BIM model and first intermediate BIM model A i Coordinate registration is carried out on the point cloud data of (2), and then division A is selected and removed respectively i Outer nth first intermediate BIM model and first intermediate BIM model A i The BIM electromechanical model in the first target BIM model is calculated, and then the data of the azimuth, occupied area, length, height and width of the BIM electromechanical model in the whole building are calculated, A is calculated i The BIM electromechanical model in the whole building comprises azimuth, occupied area, length, height and width data, and the aim of a point cloud registration algorithmAccording to the method, two or more groups of point cloud data in different coordinate systems are unified into the same reference coordinate system through certain rotation and translation transformation, and the point cloud data can obtain accurate topological structures and geometric structures of objects with low storage cost.
Further, the data of the azimuth, occupied area, length, height and width of the BIM electromechanical model in the text of the first target BIM model in the whole building are compared with A i The azimuth, occupied area, length, height and width of the BIM electromechanical model in the whole building are compared, and the similarity of the components of the two BIM electromechanical models and the similarity of the positions of the components in the whole building are calculated, so that a third similarity is obtained.
S4, acquiring a target BIM model and C based on the first building similarity, the first structural similarity and the first electromechanical similarity i Is a similarity of (3).
Specifically, a first target BIM model text and A i The similarity of (2) may be a mean of the first building similarity, the first structural similarity, and the first electromechanical similarity.
In conclusion, the invention is implemented by comparing and dividing A i Outer nth first intermediate BIM model and first intermediate BIM model A i BIM building model, BIM structure model and BIM electromechanical model of the system, and obtaining first building similarity, first structure similarity and first electromechanical similarity, thereby obtaining division A more accurately i Outer nth first intermediate BIM model and first intermediate BIM model A i Is a similarity of (3).
Embodiments of the present invention also provide a non-transitory computer readable storage medium that may be disposed in an electronic device to store at least one instruction or at least one program for implementing one of the methods embodiments, the at least one instruction or the at least one program being loaded and executed by the processor to implement the methods provided by the embodiments described above.
Embodiments of the present invention also provide an electronic device comprising a processor and the aforementioned non-transitory computer-readable storage medium.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. Those skilled in the art will also appreciate that many modifications may be made to the embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (7)
1. A method of obtaining a building project BIM model, the method comprising the steps of:
s100, obtaining an integrity level list L= { L of the target building project 1 ，L 2 ，…，L j ，…，L n }，L j Is the j-th integrity level, the value range of j is 1 to n, n is the number of the integrity levels, wherein L j+1 Is greater than L j Is the integrity of (1);
s200, obtaining a target building project L j Corresponding first target BIM model text;
s300, the first target BIM model text is displayed in a preset loading model list C= { C 1 ，C 2 ，…，C i ，…，C m Loading in the first intermediate BIM model list A= { A 1 ，A 2 ，…，A i ，…，A m (wherein A) i Is the target BIM model at C i BIM model after being loaded, C i Is the i-th preset loading model, the value range of i is 1 to m, and m is the number of the preset loading models;
s400, obtaining A i Is the first similarity B of (2) i ={B i1 ，B i2 ，…，B ir ，…，B i(m-1) }，B ir Is A i And divide A i Similarity of the outer r first intermediate BIM model, and the value range of r is 1 to m-1;
s500, obtain B i Is of the first priority of (1)
Thereby acquiring a first priority list andtaking a first intermediate BIM model with the smallest first priority as L j A corresponding specified BIM model, L j Corresponding appointed BIM model as target building project L j+1 Is a first basic BIM model of (b);
s600, based on target building project L n-1 Corresponding appointed BIM model, obtaining target building project L n The corresponding appointed BIM model is used as a final BIM model corresponding to the target building project;
further, obtaining a final BIM model corresponding to the associated building project includes the steps of:
s10, acquiring an associated building project L j A corresponding second target BIM model text, wherein the associated building item and the target building item belong to a building item with the same function;
s20, obtaining L j The corresponding specified loading model list is determined based on the first similarity list B;
s30, loading the second target BIM model text in a designated loading model to obtain L j Corresponding second intermediate BIM model list f= { F 1 ，F 2 ，…，F g ，…，F z }，F g Is the g second intermediate BIM model, the value range of g is 1 to z, and z is the number of the second intermediate BIM models;
s40, based on L j Corresponding second intermediate BIM model list, obtain F g And removing F g Second degree of similarity G of outer t second intermediate BIM model gt To obtain a second similarity list G g ={G g1 ，G g2 ，…，G gt ，…，G g（z-1） -t has a value in the range 1 to z-1;
s50, obtaining F g Corresponding second priority
Thereby obtaining a second priority list and taking a second intermediate BIM model with the smallest second priority as L j A corresponding second specified BIM model as an associated building item L j+1 Basic BI of (C)M model.
2. The method of obtaining a building project BIM model according to claim 1, further comprising after S50:
s51, acquiring the associated building project L j+1 A corresponding third target BIM model text;
s53, loading the third target BIM model text in a preset loading model list C to obtain L j+1 Corresponding third intermediate BIM model list d= { D 1 ，D 2 ，…，D i ，…，D m Sum L j+1 Middle D i Corresponding third similarity list E i ={E i1 ，E i2 ，…，E ir ，…，E im（m-1） }，E ir Is D i And divide D i Similarity of outer rT third intermediate BIM model, D i Is the third target BIM model text at C i A third intermediate BIM model obtained by loading;
s55, obtaining E i Corresponding third priority
Thereby acquiring a third priority list and taking a third intermediate BIM model with the smallest third priority as an associated building item L j+1 A corresponding third specified BIM model.
3. The method for acquiring building project BIM model according to claim 1, wherein S20 acquires L by j Corresponding specified load model list:
s21, B i The preset loading model corresponding to the similarity threshold B ʹ being larger than the preset similarity threshold B ʹ is marked as the specified loading model, so that a specified loading model list is obtained.
4. A method of obtaining a building project BIM model according to claim 3, wherein the preset similarity threshold B ʹ is an average of the similarity list B.
5. The method of obtaining a building item BIM model according to claim 2, wherein when the integrity level list l= { LOD200, LOD300, LOD350, LOD400} of the target building item, the building item L is associated in S51 j+1 The value is LOD400.
6. A non-transitory computer readable storage medium having stored therein at least one instruction or at least one program loaded and executed by a processor to implement the method of any one of claims 1-5.
7. An electronic device comprising a processor and the non-transitory computer-readable storage medium of claim 6.
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| CN111340100A (en) * | 2020-02-24 | 2020-06-26 | 盈嘉互联（北京）科技有限公司 | Similarity calculation method of BIM (building information modeling) model |
| CN112784341A (en) * | 2021-01-29 | 2021-05-11 | 广联达科技股份有限公司 | BIM (building information modeling) model attribute determination method and device, computer equipment and storage medium |
| CN113377880A (en) * | 2021-05-14 | 2021-09-10 | 华仁建设集团有限公司 | Building model automatic matching method and system based on BIM |
| CN113988495A (en) * | 2020-07-27 | 2022-01-28 | 叶春亮 | Building engineering monitoring method and system based on BIM and monitoring server |
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| CN111340100A (en) * | 2020-02-24 | 2020-06-26 | 盈嘉互联（北京）科技有限公司 | Similarity calculation method of BIM (building information modeling) model |
| CN113988495A (en) * | 2020-07-27 | 2022-01-28 | 叶春亮 | Building engineering monitoring method and system based on BIM and monitoring server |
| CN112784341A (en) * | 2021-01-29 | 2021-05-11 | 广联达科技股份有限公司 | BIM (building information modeling) model attribute determination method and device, computer equipment and storage medium |
| CN113377880A (en) * | 2021-05-14 | 2021-09-10 | 华仁建设集团有限公司 | Building model automatic matching method and system based on BIM |
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