CN114139262A - BIM model creation method and system based on BIM model data standard - Google Patents
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Abstract
The invention aims to provide a BIM model establishing method and system based on BIM model data standard to realize BIM model standardization and normalization establishment. The method comprises the following steps: step S10, building BIM model data standard based on the project stage domain, the component classification tree, the attribute pool and the component library; step S11, acquiring engineering stages and component classifications configured by a user, and acquiring a standard component library of BIM model data standards under the engineering stages and the component classifications; step S12, executing the mapping between the current modeling system component library and the standard component library; step S13, pre-creating a BIM model component through the current modeling system, and performing attribute validity constraint and verification on the pre-created BIM model component based on BIM model data standard; step S13, a BIM model is created based on the BIM model components passing the verification.
Description
Technical Field
The invention relates to the technical field of BIM model data standards, in particular to a BIM model establishing method and system based on the BIM model data standards.
Background
The BIM technology is widely applied to engineering projects as an efficient cooperation tool, and BIM model attribute verification has important significance for guaranteeing model effectiveness. At present, due to the fact that BIM standards related to engineering projects are various, the BIM standards established in various industries and enterprises cannot be unified, the standards lack a landing means, on the other hand, the checking of the BIM model lacks a universal automatic tool, and the checking work efficiency of the BIM model is not high. In order to ensure the quality of the BIM model and ensure the operation of engineering projects, an efficient and accurate BIM model standardization establishing method is urgently needed, the quality of the model is normalized in a model establishing stage, the rework caused by the quality problem of the BIM model is reduced, and the checking workload of the BIM model is reduced.
Disclosure of Invention
The invention aims to provide a BIM model establishing method and system based on BIM model data standard to realize BIM model standardization and normalization establishment.
The invention provides a BIM model creating method based on BIM model data standard, which comprises the following steps:
step S10, building BIM model data standard based on the project stage domain, the component classification tree, the attribute pool and the component library;
step S11, acquiring engineering stages and component classifications configured by a user, and acquiring a standard component library of BIM model data standards under the engineering stages and the component classifications;
step S12, executing the mapping between the current modeling system component library and the standard component library;
step S13, pre-creating a BIM model component through the current modeling system, and performing attribute validity constraint and verification on the pre-created BIM model component based on BIM model data standard;
step S13, a BIM model is created based on the BIM model components passing the verification.
Further, step S10 specifically includes:
step S101, establishing an engineering stage domain of a BIM model data standard based on an engineering stage name and an engineering stage depth grade;
step S102, building a component classification tree which accords with BIM model data standards based on BIM component classification and BIM components;
step S103, establishing an attribute pool of the BIM model data standard based on the BIM model data standard attribute label and the BIM model data standard attribute;
and step S104, establishing a component library of the BIM model data standard based on the incidence relation between the BIM component and the BIM model data standard attribute in the engineering stage and the BIM model data standard attribute verification rule of the BIM component.
Further, step S12 specifically includes:
s120, acquiring the category and the name of each model component in the current modeling system component library, inquiring a standard component library of a BIM (building information modeling) data standard, and mapping the matched standard component and the matched model component if one standard component exists, and the category and the name of the standard component are consistent with those of the model component; if no standard component is matched, selecting a standard component to map with the model component based on a manual selection mode;
and S121, for each mapped model component, reading the standard attributes of the mapped standard component, and adding all the standard attributes to the model component.
Further, in step S13, the attribute validity constraint of the pre-created BIM model component based on the BIM model data standard specifically includes:
s130, inquiring a pre-created BIM model component in a standard component library for a BIM standard component mapped by the component, hanging a standard attribute of the corresponding BIM standard component for the component, and acquiring a corresponding attribute value;
s131, carrying out format and numerical specification on the acquired attribute values, wherein the specification comprises one or more items of enumeration value range, decimal point digit number, Boolean value, dimension and unit or attribute data format.
Further, step S131 specifically includes:
for the attributes of the real number type, the measurement type and the coordinate type, normalizing decimal points of attribute values to specified digits; for the attribute of the time type, normalizing the attribute value according to a specified time format; for the attribute of the enumeration type, the attribute value can be selected from the value range of the enumeration value only; for attributes of a coordinate type, attribute values are normalized according to a coordinate format.
Further, in step S13, performing attribute check on the pre-created BIM model component based on the BIM model data standard includes attribute integrity check and attribute correctness check.
Further, the attribute integrity check specifically includes:
checking whether unfilled items exist in all standard attributes hung on a pre-created BIM model component, if so, not passing integrity verification of the BIM model component, and setting attribute values to be unfilled with identifiers; if all standard attributes do not have unfilled entries, the BIM model component passes the integrity check.
Further, the attribute correctness checking specifically includes:
for each standard attribute hooked by a pre-created BIM model component, checking whether an attribute value meets the requirement of each check rule one by one according to the check rule of the standard attribute, if any one does not meet the check rule, judging that the standard attribute does not pass the correctness check, and giving an identifier of a check failure reason; and if all the check rules are met, the standard attribute passes the correctness check.
The present invention also provides a BIM model creation system based on BIM model data standard, for executing the method according to the first aspect, including:
the standard configuration module is used for establishing a BIM model data standard based on the engineering stage domain, the component classification tree, the attribute pool and the component library;
the data configuration module is used for acquiring an engineering stage and a component classification configured by a user and acquiring a standard component library of a BIM (building information modeling) model data standard under the engineering stage and the component classification;
the mapping module is used for executing the mapping of the current modeling system component library and the standard component library;
the checking module is used for pre-creating the BIM model component through the current modeling system and carrying out attribute validity constraint and checking on the pre-created BIM model component based on the BIM model data standard;
and the model generation module is used for creating the BIM model based on the verified BIM model component.
The invention has the following beneficial effects:
firstly, a structured BIM model data standard framework which can be identified by a computer is established, and a foundation is laid for checking the attribute of the BIM model; secondly, establishing a standardized modeling flow, and performing attribute constraint and inspection in the modeling process to ensure the correctness of an output model and reduce rework and quality problems; and thirdly, a mapping method of the system and the BIM standard is established, effective combination of the modeling system and the BIM standard is promoted, and modeling effectiveness and efficiency are improved.
Drawings
Fig. 1 is a schematic flow chart of an embodiment of a BIM model creation method based on a BIM model data standard according to the present invention.
FIG. 2 is a diagram illustrating an example of mapping between model components and standard components in an embodiment of a BIM model creation system based on BIM model data standards according to the present invention.
FIG. 3 is an example of the mapping between the attributes of the model components and the attributes of the standard components in the BIM model creation system based on the BIM model data standard according to the embodiment of the present invention.
FIG. 4 shows a BIM model example hanging BIM standard component attribute example in the BIM model creation system embodiment based on BIM model data standard.
Fig. 5 is an example of a verification result of the verification module in the BIM model creation system embodiment based on the BIM model data standard according to the present invention.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
The embodiment of the invention provides a BIM model establishing method based on a BIM model data standard, and shows a BIM model establishing system based on the BIM model data standard, which is constructed based on the method. The method and system of the present invention are further described with reference to the accompanying drawings and the specific examples.
Referring to fig. 1, the BIM model creating method based on the BIM model data standard according to the present invention includes the following steps:
step S10, building BIM model data standard based on the project stage domain, the component classification tree, the attribute pool and the component library;
step S11, acquiring engineering stages and component classifications configured by a user, and acquiring a standard component library of BIM model data standards under the engineering stages and the component classifications;
step S12, executing the mapping between the current modeling system component library and the standard component library;
step S13, pre-creating a BIM model component through the current modeling system, and performing attribute validity constraint and verification on the pre-created BIM model component based on BIM model data standard;
step S13, a BIM model is created based on the BIM model components passing the verification.
Correspondingly, the BIM model creating system based on the BIM model data standard and constructed based on the method comprises the following modules:
the standard configuration module is used for establishing a BIM model data standard based on the engineering stage domain, the component classification tree, the attribute pool and the component library;
the data configuration module is used for acquiring an engineering stage and a component classification configured by a user and acquiring a standard component library of a BIM (building information modeling) model data standard under the engineering stage and the component classification;
the mapping module is used for executing the mapping of the current modeling system component library and the standard component library;
the checking module is used for pre-creating the BIM model component through the current modeling system and carrying out attribute validity constraint and checking on the pre-created BIM model component based on the BIM model data standard;
and the model generation module is used for creating the BIM model based on the verified BIM model component.
In an illustrative embodiment, step S10 of the method of the present invention specifically includes:
and S101, establishing an engineering stage domain of a BIM model data standard based on the engineering stage name and the engineering stage depth level.
Step S102, building a component classification tree which accords with BIM model data standards based on BIM component classification and BIM components; wherein the BIM component class at least comprises a BIM component class number and a BIM component class name.
Step S103, establishing an attribute pool of the BIM model data standard based on the BIM model data standard attribute label and the BIM model data standard attribute. The BIM data standard attribute label is used for classifying the BIM data standard attribute so as to perform grouping management on the BIM data standard attribute, and comprises a BIM data standard attribute label name and a BIM data standard attribute label remark. The BIM model data standard attribute comprises a BIM model data standard attribute name, a BIM model data standard attribute number, a BIM model data standard attribute definition and a BIM model data standard attribute type, and is configured with the BIM model data standard attribute label.
Optionally, the standard attribute type of the BIM model data includes a text type, an integer type, a real number type, a currency type, a measurement type, a time type, a boolean type, an enumeration type, a coordinate type, an enumeration tag type, or the like.
And step S104, establishing a component library of the BIM model data standard based on the incidence relation between the BIM component and the BIM model data standard attribute in the engineering stage and the BIM model data standard attribute verification rule of the BIM component. The association relationship between the BIM component and the BIM model data standard attribute in the engineering stage comprises associating the BIM model data standard attribute with the BIM component in different BIM standard stages.
The BIM standard attribute check rule of the BIM component comprises a BIM standard attribute check rule name, a BIM standard attribute check error prompt text, a BIM standard attribute check rule, a BIM standard attribute check type and a BIM standard attribute check remark.
As a preferred embodiment, the BIM model data standard attribute verification rule refers to a BIM model data standard attribute verification rule of all BIM component classifications under a process stage domain in the BIM model data standard.
In an illustrative example, a "bridge standard" BIM model data standard is established based on a standard configuration module of the system of the present invention, including a BIM model data engineering stage, a BIM model data standard component classification tree, a BIM model data standard attribute pool, and a checking rule of components and attributes of the BIM model data standard, as shown in tables 1-6.
TABLE 1 engineering stage information Table
| Serial number | Standard phase | Standard stage depth requirement | Sequence of | Remarks for note |
| 1 | Construction stage | L3 | 1 | Is free of |
TABLE 2 Member Classification information Table
Table 3 attribute information table
| Serial number | Attribute numbering | Attribute name | Attribute definition | Attribute type | Attribute tag |
| 1 | gao-du | Height | Is free of | Real number | Size information |
| 2 | kuan-du | Width of | Is free of | Real number | Size information |
| 3 | hun-ning-tu-qiang-du-deng-ji | Strength of concrete | Is free of | Text | Concrete and its production method |
| 4 | zhi-jing | Diameter of | Is free of | Real number | Size information |
| 5 | gou-jian-lei-xing | Component type | Is free of | Text | Identity information |
| 6 | ta-bu-ji-shu | Number of steps | Is free of | Integer number of | Size information |
TABLE 4 component "bench 25 mm" related information table
TABLE 5 component "circular armrest 60 mm" related information table
| Serial number | Attribute name | Attribute numbering | Attribute type | Attribute tag | Attribute sources | Association phase |
| 1 | Diameter of | zhi-jing | Real number | Size information | Direct association | L3 |
Table 6 example of check rule information table section
Table 7 design phase check rules link table example
| Serial number | Standard phase | Component class name | Attribute name | Verifying names |
| 1 | Construction stage | The ladder section is 25mm | Concrete strength grade | Concrete strength verification |
| 2 | Construction stage | Circular armrest 60mm | Diameter of | Diameter verification |
In an illustrative embodiment, in step S11 of the method of the present invention, the user selects all component classes under the L3 construction stage, and then the data configuration module in the corresponding system retrieves the standard component library of the BIM model data standard under the construction stage and component class.
In an illustrative embodiment, step S12 of the method of the present invention specifically includes:
s120, acquiring the category and the name of each model component in the current modeling system component library, inquiring a standard component library of a BIM (building information modeling) data standard, and mapping the matched standard component and the matched model component if one standard component exists, and the category and the name of the standard component are consistent with those of the model component; if no standard component is matched, selecting a standard component to map with the model component based on a manual selection mode;
and S121, for each mapped model component, reading the standard attributes of the mapped standard component, and adding all the standard attributes to the model component.
In an illustrative example, as shown in fig. 2, based on the mapping module of the system of the present invention, the cap beam and the cap platform member of the current modeling system are mapped with the cap beam and the cap platform member in the BIM model data standard, respectively; as shown in fig. 3, for the mapped capping beam member, the standard attributes in the standard member are hung in the model member, the left-side attribute list is the standard attributes of the BIM standard member, the right-side attribute list is the original attributes of the model member, and the model member is added with the left-side standard attributes on the basis of the original attributes. The user can map the attribute value of the standard attribute and directly calculate and obtain the attribute value from the model attribute value, for example, in fig. 3, the standard attribute 'beam length' is equal to the original attribute 'left bent cap transverse beam length' and 'right bent cap transverse beam length' of the model member; the standard attribute of beam height is equal to the original attribute of the model component of capping beam height.
In an illustrated embodiment, in step S13 of the method of the present invention, the attribute validity constraint on the pre-created BIM model component based on the BIM model data standard specifically includes:
s130, inquiring a pre-created BIM model component in a standard component library for a BIM standard component mapped by the component, hanging a standard attribute of the corresponding BIM standard component for the component, and acquiring a corresponding attribute value;
s131, carrying out format and numerical specification on the acquired attribute values, wherein the specification comprises one or more items of enumeration value range, decimal point digit number, Boolean value, dimension and unit or attribute data format. Specifically, for real number type, measurement type and coordinate type attributes, the decimal point of the attribute value is normalized to a specified digit number; for the attribute of the time type, normalizing the attribute value according to a specified time format; for the attribute of the enumeration type, the attribute value can be selected from the value range of the enumeration value only; for attributes of a coordinate type, attribute values are normalized according to a coordinate format.
In an illustrative example, based on the verification module of the system of the present invention, a user creates a model instance of a capping member using the capping member of the current modeling system, which initializes the standard properties of the BIM standard member, as shown in fig. 4. According to the attribute mapping relationship in step S130, the beam length and beam height attribute values of the capping beam member may be obtained from the original attribute values. After the user edits the attribute value, the system performs attribute validity constraint and standardizes the numerical decimal place.
In an illustrative embodiment, in step S13 of the method of the present invention, the attribute verification of the pre-created BIM model component based on the BIM model data standard includes an attribute integrity verification and an attribute correctness verification.
The attribute integrity check specifically comprises the following steps: checking whether unfilled items exist in all standard attributes hung on a pre-created BIM model component, if so, not passing integrity verification of the BIM model component, and setting attribute values to be unfilled with identifiers; if all standard attributes do not have unfilled entries, the BIM model component passes the integrity check.
The attribute correctness checking specifically includes: for each standard attribute hooked by a pre-created BIM model component, checking whether an attribute value meets the requirement of each check rule one by one according to the check rule of the standard attribute, if any one does not meet the check rule, judging that the standard attribute does not pass the correctness check, and giving an identifier of a check failure reason; and if all the check rules are met, the standard attribute passes the correctness check.
In an illustrative example, based on the verification module of the system of the present invention, after the user edits the attribute value, the attribute integrity check and the attribute correctness check are performed. As shown in fig. 4, the check result report can be viewed by clicking the check button. The system checks the integrity of the standard attribute and the correctness of each attribute value in turn, for example, the necessary attribute 'identification code' of the bent cap member is checked and is not filled, and the integrity is not verified; in the filled standard attributes, the character length of the classification code value is greater than 1, the beam length value is greater than 0, and the beam height value is greater than 0, all of which conform to the check rule of each standard attribute and pass the correctness check. The verification result is shown in fig. 5.
And finally, the user corrects the attribute value according to the verification result, saves and edits, and the building of the BIM model component can be completed.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. A BIM model establishing method based on BIM model data standard is characterized by comprising the following steps:
step S10, building BIM model data standard based on the project stage domain, the component classification tree, the attribute pool and the component library;
step S11, acquiring engineering stages and component classifications configured by a user, and acquiring a standard component library of BIM model data standards under the engineering stages and the component classifications;
step S12, executing the mapping between the current modeling system component library and the standard component library;
step S13, pre-creating a BIM model component through the current modeling system, and performing attribute validity constraint and verification on the pre-created BIM model component based on BIM model data standard;
step S13, a BIM model is created based on the BIM model components passing the verification.
2. The BIM model creation method according to claim 1, wherein step S10 specifically includes:
step S101, establishing an engineering stage domain of a BIM model data standard based on an engineering stage name and an engineering stage depth grade;
step S102, building a component classification tree which accords with BIM model data standards based on BIM component classification and BIM components;
step S103, establishing an attribute pool of the BIM model data standard based on the BIM model data standard attribute label and the BIM model data standard attribute;
and step S104, establishing a component library of the BIM model data standard based on the incidence relation between the BIM component and the BIM model data standard attribute in the engineering stage and the BIM model data standard attribute verification rule of the BIM component.
3. The BIM model creation method according to claim 1, wherein step S12 specifically includes:
s120, acquiring the category and the name of each model component in the current modeling system component library, inquiring a standard component library of a BIM (building information modeling) data standard, and mapping the matched standard component and the matched model component if one standard component exists, and the category and the name of the standard component are consistent with those of the model component; if no standard component is matched, selecting a standard component to map with the model component based on a manual selection mode;
and S121, for each mapped model component, reading the standard attributes of the mapped standard component, and adding all the standard attributes to the model component.
4. The BIM model creating method based on the BIM model data standard as claimed in claim 1, wherein in step S13, the attribute validity constraint of the pre-created BIM model component based on the BIM model data standard specifically includes:
s130, inquiring a pre-created BIM model component in a standard component library for a BIM standard component mapped by the component, hanging a standard attribute of the corresponding BIM standard component for the component, and acquiring a corresponding attribute value;
s131, carrying out format and numerical specification on the acquired attribute values, wherein the specification comprises one or more items of enumeration value range, decimal point digit number, Boolean value, dimension and unit or attribute data format.
5. The BIM model creation method based on the BIM model data standard of claim 4, wherein step S131 specifically comprises:
for the attributes of the real number type, the measurement type and the coordinate type, normalizing decimal points of attribute values to specified digits; for the attribute of the time type, normalizing the attribute value according to a specified time format; for the attribute of the enumeration type, the attribute value can be selected from the value range of the enumeration value only; for attributes of a coordinate type, attribute values are normalized according to a coordinate format.
6. The BIM model creation method based on the BIM model data standard of claim 4, wherein in step S13, the attribute check of the pre-created BIM model component based on the BIM model data standard comprises an attribute integrity check and an attribute correctness check.
7. The BIM model creation method based on the BIM model data standard according to claim 6, wherein the attribute integrity check specifically comprises:
checking whether unfilled items exist in all standard attributes hung on a pre-created BIM model component, if so, not passing integrity verification of the BIM model component, and setting attribute values to be unfilled with identifiers; if all standard attributes do not have unfilled entries, the BIM model component passes the integrity check.
8. The BIM model creation method based on the BIM model data standard of claim 6, wherein the attribute correctness checking specifically comprises:
for each standard attribute hooked by a pre-created BIM model component, checking whether an attribute value meets the requirement of each check rule one by one according to the check rule of the standard attribute, if any one does not meet the check rule, judging that the standard attribute does not pass the correctness check, and giving an identifier of a check failure reason; and if all the check rules are met, the standard attribute passes the correctness check.
9. A BIM model creation system based on BIM model data standards for performing the method of any one of claims 1-8, comprising:
the standard configuration module is used for establishing a BIM model data standard based on the engineering stage domain, the component classification tree, the attribute pool and the component library;
the data configuration module is used for acquiring an engineering stage and a component classification configured by a user and acquiring a standard component library of a BIM (building information modeling) model data standard under the engineering stage and the component classification;
the mapping module is used for executing the mapping of the current modeling system component library and the standard component library;
the checking module is used for pre-creating the BIM model component through the current modeling system and carrying out attribute validity constraint and checking on the pre-created BIM model component based on the BIM model data standard;
and the model generation module is used for creating the BIM model based on the verified BIM model component.
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