CN111667576A - Method for detecting non-geometric characteristic information of four-electrical engineering component model - Google Patents
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Abstract
The invention relates to a method for detecting non-geometric characteristic information of a four-electrical engineering component model, which comprises the following steps: establishing a railway four-electricity BIM information storage standard entity library, defined entity objects, attribute constraints and incidence relations, and establishing a standard component system; using the system for matching and fusing IFC standard frameworks; establishing an IFC data model frame based on a railway four-electric BIM information storage standard; establishing standard detection software of an IFC data model frame based on railway four-electric BIM information storage standards, wherein the detection software is used as BIM modeling software to acquire entity information, and the superposition attribute information is properly matched with the standard data model frame; and building a railway four-electricity BIM information model conforming to a standard component framework by using BIM software and exporting an IFC data format. The method is based on the international IFC standard, and can further promote the application and development of the BIM technology in the railway four-electrical engineering on the premise of expanding the standard information of the railway four-electrical component in China.
Description
Technical Field
The invention belongs to the technical field of railway four-electric information models, and particularly relates to a method for detecting non-geometric characteristic information of a four-electric engineering component model.
Background
The Building Information Modeling (BIM) technology is a datamation tool applied to engineering design, construction and management, integrates related Information of various projects through a parameter model, and shares and transmits the Information in the whole life cycle process of project planning, operation and maintenance, so that engineering technicians can correctly understand and efficiently respond to various construction Information, a foundation for cooperative work is provided for design teams and all parties including buildings and operation units, and important functions are played in the aspects of improving production efficiency, saving cost and shortening construction period.
With the continuous development of information technology, BIM three-dimensional technology and other innovative technologies, the informatization level of railway design is greatly improved, and the traditional two-dimensional exploration design technology is gradually transited to three-dimensional design. However, compared with other industries such as construction and machinery, the BIM technology application of railway design is still in the primary stage, an information sharing mechanism in the stages of design and construction is not formed, and a BIM model for bearing the whole industrial chain is not available.
The main problems are as follows:
1. the railway four-electric entity model can only realize geometric form, and non-geometric form information is incomplete and difficult to construct.
2. The non-geometric information delivery standard is not practical enough, for example, the connection relationship defined in the IFC is only a generalized connection relationship, and is not sufficient to satisfy the differentiation of various connection relationships in the four-wire engineering, and the requirement of information integrity recognition can be satisfied only by detecting and recognizing in the BIM information model detection.
3. The existing IFC standard is not clear enough for the information definition of the railway four-electric engineering, and the information of all the participants of the engineering cannot be unified.
4. The method lacks means for detecting, evaluating and authenticating the railway four-electric BIM technology and results: the railway four-electricity BIM mostly depends on third-party software in the current application process, the third-party software does not have uniform non-geometric information specifications, and an IFC format with complete four-electricity engineering information cannot be derived. Therefore, the railway four-electric BIM application result is standardized by means of unified detection, evaluation and authentication of railway four-electric BIM technology and results.
According to three standards such as an IFC standard in BIM technical application, an International dictionary structure (IFD) standard and an Engineering decomposition structure (EBS) standard in Engineering system decomposition, a set of multi-stage personnel use requirements of railway four-electricity design, construction, maintenance and repair and the like are established, a corresponding structural Framework is formulated, and corresponding standard codes and a detection device thereof are formulated to promote railway four-electricity BIM application to be further implemented.
Disclosure of Invention
The invention aims to provide a method for detecting non-geometric characteristic information of a four-electric engineering component model, which is used for solving the problem of normative data exchange of a railway four-electric BIM model and providing guarantee for standard format data transmission in railway four-electric BIM design, construction and operation maintenance stages.
The technical scheme adopted by the invention is as follows:
the method for detecting the non-geometric characteristic information of the four-electrical engineering component model is characterized by comprising the following steps:
the method comprises the following steps:
step 1, establishing a railway four-electricity BIM information storage standard entity library, defined entity objects, attribute constraints and incidence relations, and establishing a standard component system;
step 2, using the standard component system established in the step 1 for matching and fusing an IFC standard framework;
step 3, establishing an IFC data model framework based on the railway four-electric BIM information storage standard, wherein the framework has a fault tolerance mechanism and provides the identification capability of a generalized framework;
step 4, establishing standard detection software of an IFC data model frame based on railway four-electric BIM information storage standards, wherein the detection software is used as BIM model identification software to acquire entity information, and the superposition attribute information is properly matched with the standard data model frame;
and 5, constructing a railway four-electric BIM information model conforming to the standard component framework by adopting BIM software according to the result obtained in the step 4, and deriving an IFC data format.
The step 1 specifically comprises the following steps:
step 1.1, determining the standard equipment specification, standard parameters, design logic elements, aggregation parameters, association parameters and constraint relations of each railway four-electric component;
step 1.2, entity categories are divided according to railway four-electric standard components, component model levels are divided, and a level list is determined;
and 1.3, combining the entity modules of each component upwards or downwards according to the subordinate relation among the entities to form a tree structure based on the entity hierarchical relation, and finishing the establishment of a standard component system.
The step 3 specifically comprises the following steps:
step 3.1, judging whether the information needing to be extended obtained in the step 2 is an entity, an attribute or an incidence relation class, if the information is the entity, executing the step 3.2, if the information is the attribute, executing the step 3.3, and if the information is the incidence relation, executing the step 3.4;
3.2, expanding by using a method of newly adding entities according to the IFC standard framework to determine the belonged level and the belonged category of the newly added entities;
step 3.3, determining entity types needing extending attributes, defining attribute sets meeting the standard, wherein the content of the attribute sets covers all clear component types in the standard component library;
and 3.4, determining the logical relationship of the railway four-electricity component in the system, establishing the association relationship between component entities according to the logical relationship, and adding association relationship classes.
The step 5 specifically comprises the following steps:
step 5.1, acquiring an entity name of an initial railway four-power BIM three-dimensional information model, if the entity name is IfcBuildingElementProxy, judging that the initial BIM three-dimensional model is a model type of which the BIM software does not establish one-to-one mapping relation with the IFC standard, and establishing a mapping relation corresponding to the model type, and performing step 5.2; if not, judging that the initial railway four-electricity BIM three-dimensional information model is not the model type of the BIM software and IFC standard missing mapping relation without establishing the mapping relation;
and 5.2, carrying out data matching on entity types, attribute information, names and associated data corresponding to the railway four-electric BIM three-dimensional information model according to the IFC data model based on the standard component library obtained in the step 3, and establishing a one-to-one mapping relation between BIM software and IFC so as to obtain a complete IFC data model.
The invention has the following advantages:
1. based on the international IFC standard, the application development of the BIM technology in railway four-electrical engineering can be further promoted on the premise of expanding the standard information of railway four-electrical component in China;
2. the defects that the general BIM software and the IFC standard meet the railway four-electricity application are made up, the seamless circulation of BIM data among the BIM software is realized, and a communication bridge is built for each participant of the railway four-electricity engineering;
3. the complete IFC data model of the railway four-electric standard component library is established, the universality and the effectiveness of BIM data description design specifications can be improved, a complete standardized data source is provided for design data exchange in a BIM mode, and the development of BIM informatization construction in China is accelerated;
4. the technical means is provided for detecting, evaluating, authenticating and other organizations to check the compliance of the railway four-electricity BIM model (the compliance with BIM standards, the availability and the like).
Drawings
FIG. 1 is a step of detecting non-geometric characteristic information of a railway four-electrical engineering component model;
FIG. 2 is a diagram of a non-geometric characteristic information detection device of a railway four-electrical engineering component model.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
The invention relates to a method for detecting non-geometric characteristic information of a four-electrical engineering component model, which comprises the following steps of:
step 1, establishing a railway four-electricity BIM information storage standard entity library, defining entity objects, attribute constraints and an incidence relation, and establishing a standard component system.
For railway signal engineering, a physical object such as a signal machine has the properties of length, width, height, material and the like, the association relationship comprises constraints such as cables, switches, switch machines and the like, and the other constraints also comprise the distance from other members.
The specific process of the step 1 is as follows:
step 1.1, determining the standard equipment specification, standard parameters, design logic elements, aggregation parameters, association parameters and constraint relations of each railway four-electric component;
step 1.2, entity categories are divided according to railway four-electric standard components, component model levels are divided, and a level list is determined;
and 1.3, combining the entity modules of each component upwards or downwards according to the subordinate relation among the entities to form a tree structure based on the entity hierarchical relation, and finishing the establishment of a standard component system.
And 2, using the standard component system established in the step 1 for matching and fusing an IFC standard framework, and using loss information as a late-stage extension point by adopting a moderate matching mode.
And 3, establishing an IFC data model framework based on the railway four-electric BIM information storage standard, wherein the framework has a fault tolerance mechanism and provides the identification capability of a generalized framework.
By newly added entity is meant an entity that is not defined in the IFC standard (e.g., an entity that is not found in the IFC standard as a cable, an newly added entity);
the attribute extension means that the IFC standard has a definition about an entity to which the attribute belongs, and only the defined attributes of the entity are not complete and do not include the attributes mentioned in the specification; (if the specification mentions that the roof has a cornice height attribute, the IFC standard defines a roof entity, and also defines the attributes of the roof such as material, thickness and the like, but the specification does not have the cornice height attribute, so that no new roof entity is required to be built in the expansion process, and only the cornice height attribute is added on the basis of the roof entity in the IFC standard)
The specific process of the step 3 is as follows:
step 3.1, judging whether the information needing to be extended obtained in the step 2 is an entity, an attribute or an incidence relation class, if the information is the entity, executing the step 3.2, if the information is the attribute, executing the step 3.3, and if the information is the incidence relation, executing the step 3.4;
and 3.2, expanding by using a method of adding new entities according to the IFC standard framework, and determining the belonged level and the belonged category of the new entities.
Step 3.3, determining entity types needing extending attributes, defining attribute sets meeting the standard, wherein the content of the attribute sets covers all clear component types in the standard component library;
and 3.4, determining the logical relationship of the railway four-electricity component in the system, establishing the association relationship between component entities according to the logical relationship, and adding association relationship classes.
And 4, establishing standard detection software of the IFC data model framework based on the railway four-electric BIM information storage standard, wherein the detection software can obtain entity information as BIM model identification software, and the superposition attribute information is properly matched with the standard data model framework.
And 5, constructing a railway four-electricity three-dimensional information model conforming to the standard component frame by adopting BIM software according to the result obtained in the step 4, and deriving an IFC data format.
The specific process of the step 5 is as follows:
step 5.1, acquiring an entity name of an initial railway four-electric BIM three-dimensional information model, if the entity name is IfcBuildingElementProxy, judging that the initial BIM three-dimensional model is a model type of BIM software which does not establish a one-to-one mapping relation with an IFC standard, and needing to establish a corresponding mapping relation, and performing step 5.2), if not, judging that the initial railway four-electric BIM three-dimensional information model is not a model type of a missing mapping relation of the BIM software and the IFC standard, and not needing to establish the mapping relation;
and 5.2, carrying out data matching on entity types, attribute information, names and associated data corresponding to the railway four-electric BIM three-dimensional information model according to the IFC data model based on the standard component library obtained in the step 3, and establishing a one-to-one mapping relation between BIM software and IFC so as to obtain a complete IFC data model.
The first embodiment is as follows:
step 1, selecting a communication trunk cable and an optical cable of an underground line in four-electricity middle-grade railway, wherein the communication trunk cable and the optical cable are made of halogen-free low-smoke flame-retardant materials and are provided with an anti-electrical-gasification-interference protective layer. "is example one. Extracting entity objects in the method: underground line, communication trunk cable and communication trunk optical cable, attribute constraint: for the materials used and the protective layer properties, the relationship: "contained" (underground line contains communication trunk cable and communication trunk cable);
the specific process of the step 1 is as follows:
step 1.1, determining that the communication trunk cable and the optical cable of the underground line are made of halogen-free low-smoke flame-retardant materials and have a protective layer for resisting the electrical gasification interference. The underground line, the communication trunk cable and the communication trunk optical cable in the system, the standard specification and standard parameters of each entity, design logic elements, aggregation parameters, association parameters and constraint relations;
step 1.2, entity categories are divided according to railway four-electric standard components, component model levels are divided, and a level list is determined;
and 1.3, combining the communication trunk cable, the communication trunk optical cable and the underground line upwards respectively to form a hierarchical relationship.
Step 2, comparing with the IFC standard, the specification information that needs to be extended in the IFC standard includes: entity object: an underground line, a communication trunk cable and a communication trunk optical cable; and (4) attribute constraint: the material and protective layer characteristics used; the association relationship is as follows: "comprises";
and 3, establishing a communication main cable and an optical cable of the underground line, wherein the communication main cable and the optical cable are made of halogen-free low-smoke flame-retardant materials and are provided with an anti-gasification interference protective layer. "the IFC data model framework, the framework has fault tolerance mechanism, provides the generalization framework identification ability.
The specific process of the step 3 is as follows:
step 3.1, judging that the information needing to be extended obtained in the step 2 is an entity type, and executing the step 3.2;
and 3.2, performing standard expansion by using a method of adding an entity on the basis of an IFC standard framework, firstly, deriving an underground line (IfcUnderrgroundline) entity by using an existing entity cable segment (IfcCableRegement) of the IFC standard, and then, establishing association between the underground line entity and a communication trunk cable (IfcCommunicationTrunkCable) entity by using a newly defined entity underground line derived communication trunk cable entity, wherein the underground line entity is associated with the communication trunk cable and the communication trunk cable entity through an association class (IfcRelAsignsToProduct) entity. Fig. 1 is a chinese-english mapping diagram of a related conduit in the existing IFC standard, which shows a process of extending a specification information entity type on the IFC standard, and fig. 2 is a chinese-english mapping diagram after a new entity is extended in the IFC standard.
And 4, establishing a communication main cable and an optical cable of the underground line, wherein the communication main cable and the optical cable are made of halogen-free low-smoke flame-retardant materials and are provided with an anti-gasification interference protective layer. "standard detection software of IFC data model frame, detection software can obtain entity information as BIM modeling software, and the superposition attribute information is properly matched with the standard data model frame.
And 5, adopting Revit three-dimensional modeling software to establish an underground pipeline model, wherein the underground pipeline model comprises a communication trunk cable and a communication trunk optical cable, and assigning corresponding actual material values: halogen-free, low-smoke and flame-retardant and protective layer properties: anti-electrical gasification interference, and finally deriving an IFC data format;
the specific process of the step 5 is as follows:
step 5.1, acquiring entity names of the initial underground pipeline model, and judging and finding that the entity names of the pipelines are IfcBuildingElementProxy, which indicates that the Revit software does not establish mapping with the IFC standard in the aspect of the underground pipelines and needs to complete the mapping relation;
step 5.2, in the IFC data model building system of the railway four-power system, the communication trunk cable entity in the Revit model is rewritten into an IFC communication backbone cable entity in the IFC framework expanded in step 3, the communication trunk cable entity is rewritten into an IFC communication trunk cable entity in the IFC framework expanded in step 3, and the attribute values in the pipeline model are filled into the IFC framework, that is, IFC useful material: halogen-free, low smoke and flame retardant, IfcProtectiveProperties: the method is used for solving the problem that the conventional method is not suitable for the IFC data model of the railway four-electricity railway, and the method is resistant to the electrical gasification interference, so that a one-to-one mapping relation between Revit software and IFC standards is established, and the IFC data model of the railway four-electricity railway with complete information is obtained.
Example two
Step 1, selecting 'the optical fiber modulus of a communication trunk optical cable should be a single mode' in railway four-power as an embodiment two, and extracting an entity object: communication trunk optical cable, attribute constraint: the modulus of the fiber.
Step 2, comparing with the IFC standard, wherein the standard information needing to be expanded in the IFC standard is an attribute constraint, namely an optical fiber modulus;
step 3, combining the information characteristics of the railway four-electric engineering, selecting an IFC model expansion mechanism corresponding to the information characteristics, and establishing an IFC data model framework;
the specific process of the step 3 is as follows:
step 3.1, on the basis of the previous example, judging that the information needing to be expanded to the specification is the attribute type, and executing the step 3.3;
and 3.3, on the basis of an entity communication trunk cable (IfcCommunicationBackuranecable), expanding the user-defined attribute set IfcCommunicationBackuraneCable PropertySet of the communication trunk cable in a user-defined attribute set mode, wherein the attribute set is provided with an optical fiber modulus attribute 'FiberModulus', and then connecting the attribute set with the entity IfcCommunicationBackuranecable through an IfcDefaultionProperties relation entity.
And 4, establishing standard detection software of an IFC data model framework, wherein the optical fiber modulus of the communication trunk optical cable is a single mode, the detection software can obtain entity information as BIM modeling software, and the superposition attribute information is properly matched with the standard data model framework.
Step 5, establishing an underground pipeline model by adopting Revit three-dimensional modeling software, and assigning corresponding optical fiber modulus values to the communication trunk optical cable: single mode;
the specific process of the step 5 is as follows: (mapping of software missing is an entity, if only the attribute is extended, the software does not need to establish a mapping relation with the IFC)
And 5.1, acquiring an entity name of the initial underground pipeline model, judging and finding that the entity name of the pipeline is consistent with the IFC standard without objection, indicating that the mapping is established in the IFC standard by Revit software aiming at the information of the model without completing the mapping relation, and finding that the FiberModulus value is 'single mode', indicating that the expansion is successful, and finishing the construction of the IFC data model facing four electric trains of the railway.
In conclusion, the method establishes a complete IFC data model of the railway four-electric-standard building base, realizes seamless circulation of BIM data among BIM software, provides a relatively standard data format for interaction of design data in the BIM mode, and promotes application development of railway four-electric-standard BIM to a certain extent.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (4)
1. The method for detecting the non-geometric characteristic information of the four-electrical engineering component model is characterized by comprising the following steps:
the method comprises the following steps:
step 1, establishing a railway four-electricity BIM information storage standard entity library, defined entity objects, attribute constraints and incidence relations, and establishing a standard component system;
step 2, using the standard component system established in the step 1 for matching and fusing an IFC standard framework;
step 3, establishing an IFC data model framework based on the railway four-electric BIM information storage standard, wherein the framework has a fault tolerance mechanism and provides the identification capability of a generalized framework;
step 4, establishing standard detection software of an IFC data model frame based on railway four-electric BIM information storage standards, wherein the detection software is used as BIM model identification software to acquire entity information, and the superposition attribute information is properly matched with the standard data model frame;
and 5, constructing a railway four-electric BIM information model conforming to the standard component framework by adopting BIM software according to the result obtained in the step 4, and deriving an IFC data format.
2. The method for detecting the non-geometric feature information of the four-electrical engineering component model according to claim 1, wherein the method comprises the following steps:
the step 1 specifically comprises the following steps:
step 1.1, determining the standard equipment specification, standard parameters, design logic elements, aggregation parameters, association parameters and constraint relations of each railway four-electric component;
step 1.2, entity categories are divided according to railway four-electric standard components, component model levels are divided, and a level list is determined;
and 1.3, combining the entity modules of each component upwards or downwards according to the subordinate relation among the entities to form a tree structure based on the entity hierarchical relation, and finishing the establishment of a standard component system.
3. The method for detecting the non-geometric feature information of the four-electrical engineering component model according to claim 2, wherein the method comprises the following steps:
the step 3 specifically comprises the following steps:
step 3.1, judging whether the information needing to be extended obtained in the step 2 is an entity, an attribute or an incidence relation class, if the information is the entity, executing the step 3.2, if the information is the attribute, executing the step 3.3, and if the information is the incidence relation, executing the step 3.4;
3.2, expanding by using a method of newly adding entities according to the IFC standard framework to determine the belonged level and the belonged category of the newly added entities;
step 3.3, determining entity types needing extending attributes, defining attribute sets meeting the standard, wherein the content of the attribute sets covers all clear component types in the standard component library;
and 3.4, determining the logical relationship of the railway four-electricity component in the system, establishing the association relationship between component entities according to the logical relationship, and adding association relationship classes.
4. The method for detecting the non-geometric feature information of the four-electrical engineering component model according to claim 3, wherein the method comprises the following steps:
the step 5 specifically comprises the following steps:
step 5.1, acquiring an entity name of an initial railway four-power BIM three-dimensional information model, if the entity name is IfcBuildingElementProxy, judging that the initial BIM three-dimensional model is a model type of which the BIM software does not establish one-to-one mapping relation with the IFC standard, and establishing a mapping relation corresponding to the model type, and performing step 5.2; if not, judging that the initial railway four-electricity BIM three-dimensional information model is not the model type of the BIM software and IFC standard missing mapping relation without establishing the mapping relation;
and 5.2, carrying out data matching on entity types, attribute information, names and associated data corresponding to the railway four-electric BIM three-dimensional information model according to the IFC data model based on the standard component library obtained in the step 3, and establishing a one-to-one mapping relation between BIM software and IFC so as to obtain a complete IFC data model.
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| CN113536438A (en) * | 2021-07-28 | 2021-10-22 | 中国电建集团华东勘测设计研究院有限公司 | BIM model rapid construction method based on national grid GIM standard |
| CN113536438B (en) * | 2021-07-28 | 2024-01-02 | 中国电建集团华东勘测设计研究院有限公司 | BIM model rapid construction method based on national power grid GIM standard |
| CN113568989A (en) * | 2021-08-02 | 2021-10-29 | 上海建工四建集团有限公司 | IFC sub-model extraction method |
| CN113568989B (en) * | 2021-08-02 | 2024-04-19 | 上海建工四建集团有限公司 | IFC submodel extraction method |
| CN114139261A (en) * | 2021-12-02 | 2022-03-04 | 浙江华东工程数字技术有限公司 | Method and system for standard programming of BIM model data |
| CN116029037A (en) * | 2023-02-15 | 2023-04-28 | 四川省建筑设计研究院有限公司 | IFC-based assembly type construction engineering amount calculating method |
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