CN115795631A - Method for acquiring BIM model of construction project, electronic equipment and storage medium - Google Patents
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Abstract
The invention provides a method for acquiring a BIM model of a construction project, which comprises the following steps: the method comprises the steps of obtaining a completeness grade list of a target building project, obtaining a first target BIM model text corresponding to the target building project, loading the first target BIM model text 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 minimum similarity priority as an appointed BIM model, obtaining a final BIM model based on the appointed BIM model corresponding to the target building project, obtaining the appointed BIM model closest to the target BIM model text corresponding to each level of precision in each level of precision of the obtained building project BIM model, and ensuring the accuracy of the final BIM model.
Description
Technical Field
The invention relates to the field of BIM models, in particular to a method for acquiring a BIM model of a construction project, electronic equipment and a storage medium.
Background
In terms of BIM, the american society of architects defines LOD as the degree of development/completeness of a BIM model, where all LOD levels express the degree of development expected at different stages of the building's life cycle, and all levels are defined as: the LOD100 is a conceptual design phase, represented by the presence of components, but does not show their shape, size, and precise location; the LOD200 is a preliminary design stage where model elements graphically represent a general system, object, or component with an approximate number, size, shape, location, and orientation in a model. LOD300 is a deep design phase in which model elements represent a particular system, object or component in terms of number, size, shape, location, and orientation in the model; LOD350 is a professional collaborative stage, and is used for performing coordinated modeling on a component and an accessory or a connected component; the LOD400 is a construction drawing stage, has sufficient detail and precision modeling, and comprises information of manufacturing, processing, installation and the like of a component; LOD500 is as completed drawing stage; only for field verification. However, in the actual use process, the BIM model designed by the designer is often inaccurate after being loaded.
In the design process, the drawing identification function of modeling software is used for modeling. However, when the method is used for modeling, the drawing which needs to be identified by a design institute is accurate enough, so that the drawing is accurate enough, and the functional requirement that the software automatically identifies the corresponding structure is met.
Disclosure of Invention
Aiming at the technical problems, the technical scheme adopted by the invention is as follows: a method of obtaining a BIM model of a construction project, the method comprising the steps of: s100, obtaining a completeness level list L = { L } of the target building project 1 ，L 2 ，…，L j ，…，L n }，L j Is the jth integrity level, j ranges from 1 to n, n is the number of integrity levels, where L j+1 Is greater than L j The integrity of (c).
S200, acquiring a target building project L j Corresponding first target BIM model text.
S300, placing the first target BIM model text in a preset loading model list C = { C = { C = } 1 ，C 2 ，…，C i ，，…，C m Loading is carried out, and a first middle BIM model list A = { A = is obtained 1 ，A 2 ，…，A i ，…，A m -means for, among other things,A i is that the target BIM model is in C i BIM model after Medium Loading, C i The value range of i is 1 to m, and m is the number of the preset loading models.
S400, obtaining A i First similarity B of i ={B i1 ，B i2 ，…，B ir ，…，B i(m-1) }，B ir Is A i And except for A i The similarity of the first middle BIM model of the outer r-th is that the value range of r is 1 to m-1.
S500, obtaining B i First priority of
Thereby obtaining a first priority list and taking a first intermediate BIM model with the smallest first priority as L j Corresponding specified BIM model, said L j Corresponding designated BIM model as target building project L j+1 The first base BIM model of (1).
S600, based on the target building project L n-1 Corresponding specified BIM model, and obtaining target building project L n And 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, obtaining a target building project L j The corresponding first target BIM model text is loaded through different preset loading models, so that a first intermediate BIM model is obtained, the priority of the similarity of the first target BIM model in a first similarity list is obtained, the first intermediate BIM model with the minimum priority is used as a basic BIM model of the next-level precision of the target building project, and a final BIM model corresponding to the target building model is obtained.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a method for obtaining a BIM model of a construction project according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a method for obtaining a building project BIM model, where the method includes the following steps:
s100, acquiring a completeness level list L = { L ] of a target building project 1 ，L 2 ，…，L j ，…，L n }，L j Is the jth integrity level, j ranges from 1 to n, n is the number of integrity levels, where L j+1 Is greater than L j The integrity of (c).
Specifically, in the prior art, the integrity level of the 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, acquiring a target building project L j Corresponding first target BIM model text.
In particular, the first target BIM model text is a non-three-dimensional model, such as a CAD-rendered two-dimensional model.
S300，Setting the first target BIM model text in a preset loading model list C = { C = { (C) 1 ，C 2 ，…，C i ，，…，C m Loading is carried out, and a first middle BIM model list A = { A = is obtained 1 ，A 2 ，…，A i ，…，A m In which A i Is that the target BIM model is in C i BIM model after Medium Loading, C i The number is the ith 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 Revit.
S400, obtaining A i First similarity B of i ={B i1 ，B i2 ，…，B ir ，…，B i(m-1) }，B ir Is A i And except for A i The value range of r is 1 to m-1, the similarity of the outer mth first middle BIM model.
S500, obtaining B i First priority of
Thereby obtaining a first priority list and taking a first intermediate BIM model with the smallest first priority as L j Corresponding specified BIM model, said L j Corresponding designated BIM model as target building project L j+1 The first base BIM model of (1).
Specifically, the invention takes the first intermediate BIM model with the minimum priority in the first similarity as L j The corresponding designated BIM model may be understood that the minimum priority in the first similarity indicates that the first intermediate BIM model corresponding to the minimum priority is similar to most of the first intermediate BIM models, and the condition 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 a mode in the first similarity list may be further used as L j Corresponding fingerAnd determining a BIM model.
S600, based on the target building project L n-1 Corresponding specified BIM model, and obtaining target building project L n And the corresponding specified BIM model is used as a final BIM model corresponding to the target building project.
Based on S100-S600, obtaining a target building project L j The corresponding first target BIM model text is loaded through different preset loading models, so that a first intermediate BIM model is obtained, the priority of the similarity of the first target BIM model in a first similarity list is obtained, the first intermediate BIM model with the minimum priority is used as a basic BIM model of the next-level precision of the target building project, and a final BIM model corresponding to the target building model is obtained.
Further, the method also comprises the following steps of obtaining the final BIM model of the associated construction project:
s10, acquiring a related building project L j And the corresponding second target BIM model text, wherein the related building project and the target building project belong to the building project with the same function.
S20, obtaining L j A corresponding list of specified loading models, the list of specified loading models being determined based on the first similarity list B.
Specifically, in S20, the specified loading model list corresponding to the L-th precision level is obtained through the following steps:
s21, mixing B i If the preset loading model is larger than a preset similarity threshold B \697, marking the corresponding preset loading model as a specified loading model, and acquiring a specified loading model list.
Further, a preset similarity threshold B \697is an average value of the similarity list B.
S30, adding the second target BIM model text in the specificationLoading in load 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-th second intermediate BIM model, the value range of g is 1 to z, z is the number of second intermediate BIM models.
S40, based on L j Corresponding second intermediate BIM model list, obtaining F g And removing F g Second similarity G of outer t-th 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 ranging from 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 minimum second priority as L j A corresponding second designated BIM model as the associated construction item L j+1 The basic BIM model of (1).
Specifically, after S50, the method further includes:
s51, acquiring the related building project L j+1 Corresponding third target BIM model text.
Specifically, when the integrity level list L = { LOD200, LOD300, LOD350, LOD400} of the target building item, the associated building item L 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 = { D = } 1 ，D 2 ，…，D i ，…，D m H and L j+1 In D i Corresponding third similarity list E i ={E i1 ，E i2 ，…，E ir ，…，E im（m-1） }，E ir Is D i And except for D i Similarity of outer third intermediate BIM model, D i Is the third target BIM model text at C i In a third step obtained by performing the loadingAnd (4) constructing a BIM model.
S55, obtaining E i Corresponding third priority
Thereby obtaining a third priority list and taking a third intermediate BIM model with the minimum third priority as the associated construction item L j+1 The corresponding third designated BIM model.
Based on S10 to S50, when the related building projects with the same function as the target building project are obtained, the appointed loading model is obtained through the first similarity in the target building project, the appointed loading model is used for loading the second target BIM model text instead of all the preset loading models, the consumption of computing resources is reduced, and the final BIM model corresponding to the related building project is obtained more quickly under the condition of ensuring the accuracy.
Because the LOD200 in the BIM model is a preliminary design stage, the LOD300 is a deepened design stage, the LOD350 is a professional collaborative stage, the LOD400 is a construction drawing stage and the LOD500 is an as-built drawing stage, the influence of the preset loading model on the same functional building project is basically the same, so that the specified loading model is used, the loading accuracy is not greatly influenced, and the resource consumption is reduced.
In addition, in S400, the invention also includes obtaining A through the following steps i And except for A i Similarity B of outer-th first intermediate BIM model ir ：
S1, removing A i Outer-th first intermediate BIM model and first intermediate BIM model A i And comparing the BIM building models to obtain the first building similarity.
Specifically, first, divide A is obtained i Outer-th first intermediate BIM model and first intermediate BIM model A i Geometric information of the individual members, second division A i Outer-th first intermediate BIM model and first intermediate BIM model A i And comparing the geometric information of the single members, and calculating and counting the length, width, height and area data of the single members to obtain the first building similarity.
Further, get except A i Outer-th first intermediate BIM model and first intermediate BIM model A i Selecting one member as reference object, counting the shape distribution data between the rest members, such as deflection angle, distance and thickness data, and dividing by A i Outer-th first intermediate BIM model and first intermediate BIM model A i The shape distribution of each member in (1), calculate division A i Outer-th first intermediate BIM model Each Member and first intermediate BIM model A i The geometric similarity of each member, thereby obtaining a first building similarity.
S2, removing A i Outer-th first intermediate BIM model and first intermediate BIM model A i And comparing the BIM structure models to obtain the first structure similarity.
Specifically, in addition to A i Outer-th first intermediate BIM model and first intermediate BIM model A i In the triangular surface of each component, random points are selected and divided by A i Outer-th 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, and taking a plurality of random points as a target BIM model and C i Based on point cloud matching algorithm, the point cloud data of (1) is divided by A i Outer mth first intermediate BIM model and first intermediate BIM model A i Coordinate registration is carried out on the point cloud data to obtain A i A rotation matrix relative to the first target BIM model text.
Further, C is i Multiplying the position information of each member by the rotation matrix, and then C is obtained i The position information after each member is registered, and the A is divided i The registered position information of each member in the first intermediate BIM model is calculated so as to divide A by i Outer-th first intermediate BIM model and first intermediate BIM model A i Comparing and calculating the position information to obtain the division A i Outer-th first intermediate BIM model Each Member and first intermediate BIM model A i And obtaining the second similarity by the position similarity between each component.
S3, removing A i Outer-th first intermediate BIM model and first intermediate BIM model A i And comparing the BIM electromechanical models to obtain a first electromechanical similarity.
Specifically, dividing A is performed based on a point cloud matching algorithm i Outer-th first intermediate BIM model and first intermediate BIM model A i The point cloud data is subjected to coordinate registration, and then the point cloud data is respectively selected and subjected to A removal i Outer mth first intermediate BIM model and first intermediate BIM model A i Then calculates the data of the orientation, the occupied area, the length, the height and the width of the BIM electromechanical model in the first target BIM model in the whole building, and calculates A i The point cloud registration algorithm aims at unifying two or more groups of point cloud data under different coordinate systems to 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, data of the orientation, occupied area, length, height and width of the BIM electromechanical model in the first target BIM model text in the whole building are compared with A i The data of the orientation, the occupied area, the length, the height and the width of the BIM electromechanical model in the whole building are compared, and the component similarity of the two BIM electromechanical models and the position similarity of the component in the whole building are calculated, so that the third similarity is obtained.
S4, acquiring a target BIM model and C based on the first building similarity, the first structure similarity and the first electromechanical similarity i The similarity of (c).
Specifically, a first target BIM model text and A i The similarity of (d) may be an average of the first building similarity, the first structural similarity, and the first electromechanical similarity.
In conclusion, the invention divides A by comparison i Outer-th first intermediate BIM model and first intermediate BIMInter BIM model A i The BIM building model, the BIM structure model and the BIM electromechanical model obtain the first building similarity, the first structure similarity and the first electromechanical similarity, thereby more accurately obtaining the first structural similarity, namely the first structural similarity, the second structural similarity and the first electromechanical similarity i Outer-th first intermediate BIM model and first intermediate BIM model A i The similarity of (c).
Embodiments of the present invention also provide a non-transitory computer-readable storage medium, which may be disposed in an electronic device to store at least one instruction or at least one program for implementing a method of the method embodiments, where the at least one instruction or the at least one program is loaded into and executed by a processor to implement the method provided by the above embodiments.
Embodiments of the present invention also provide an electronic device comprising a processor and the aforementioned non-transitory computer-readable storage medium.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will also be appreciated by those skilled in the art that various 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 (8)
1. A method of obtaining a BIM model of a construction project, the method comprising the steps of:
s100, acquiring a completeness level list L = { L ] of a target building project 1 ，L 2 ，…，L j ，…，L n }，L j Is the jth integrity level, j ranges from 1 to n, n is the number of integrity levels, where L j+1 Is greater than L j The degree of completeness of the image;
s200, acquiring a target building project L j A corresponding first target BIM model text;
s300, placing the first target BIM model text in a preset loading model list C = { C = { C = } 1 ，C 2 ，…，C i ，…，C m Loading is carried out, and a first middle BIM model list A = { A = is obtained 1 ，A 2 ，…，A i ，…，A m In which A i Is that the target BIM model is in C i BIM model after Medium Loading, C i The number is the ith 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 First similarity B of i ={B i1 ，B i2 ，…，B ir ，…，B i(m-1) }，B ir Is A i And except for A i Similarity of the outer r-th first middle BIM model, wherein the value range of r is 1 to m-1;
s500, obtaining B i First priority of
Thereby obtaining a first priority list and taking a first intermediate BIM model with the smallest first priority as L j Corresponding specified BIM model, said L j Corresponding designated BIM model as target building project L j+1 The first base BIM model of (1);
s600, based on the target building project L n-1 Corresponding specified BIM model, and obtaining target building project L n And the corresponding specified BIM model is used as a final BIM model corresponding to the target building project.
2. The method of claim 1, wherein obtaining a final BIM model corresponding to the associated construction project comprises:
s10, acquiring a related 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 A corresponding list of specified loading models, the list of specified loading models being determined based on the first similarity list B;
s30, loading the second target BIM model text in the specified loading model to obtain L j Corresponding toSecond intermediate BIM model list F = { F 1 ，F 2 ，…，F g ，…，F z }，F g Is the g-th second intermediate BIM model, the value range of g is 1 to z, z is the number of the second intermediate BIM model;
s40, based on L j Corresponding second intermediate BIM model list, obtaining F g And removing F g Second similarity G of outer t-th second intermediate BIM model gt To obtain a second similarity list G g ={G g1 ，G g2 ，…，G gt ，…，G g（z-1） T is in the range of 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 minimum second priority as L j A corresponding second designated BIM model as the associated construction item L j+1 The basic BIM model of (1).
3. The method of obtaining a BIM model of a construction project of claim 2, further comprising after S50:
s51, acquiring related building item 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 = { (D) 1 ，D 2 ，…，D i ，…，D m H and L j+1 In D i Corresponding third similarity list E i ={E i1 ，E i2 ，…，E ir ，…，E im（m-1） }，E ir Is D i And except for D i Similarity of outer third intermediate BIM model, D i It is the third target BIM model text at C i Loading to obtain a third intermediate BIM model;
s55, obtaining E i Corresponding third priority
Thereby obtaining a third priority list and using the third intermediate BIM model with the minimum third priority as the associated building item L j+1 The corresponding third designated BIM model.
4. The method for obtaining BIM model of construction project of claim 2, wherein S20 obtains L by j Corresponding list of specified loading models:
s21, mixing B i If the preset loading model is larger than a preset similarity threshold B \697, marking the corresponding preset loading model as a specified loading model to obtain a specified loading model list.
5. The method for obtaining the BIM model of the construction project as claimed in claim 4, wherein the preset similarity threshold B \697is an average value of the similarity list B.
6. The method of claim 3, wherein the associated building item L in S51 is set as the integrity level list L = { LOD200, LOD300, LOD350, LOD400} of the target building item j+1 The value is LOD400.
7. A non-transitory computer readable storage medium having stored therein at least one instruction or at least one program, the at least one instruction or the at least one program being loaded and executed by a processor to implement the method of any one of claims 1-6.
8. An electronic device comprising a processor and the non-transitory computer readable storage medium of claim 7.
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| 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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| US20190015992A1 (en) * | 2017-07-11 | 2019-01-17 | Formdwell Inc | Robotic construction guidance |
| 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 |
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