CN112347534A - Water conservancy and hydropower engineering BIM model conversion method based on IFC extension - Google Patents
Water conservancy and hydropower engineering BIM model conversion method based on IFC extension Download PDFInfo
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Abstract
A water conservancy and hydropower engineering BIM model conversion method based on IFC extension relates to the field of hydropower BIM model conversion, and comprises extension of an IFC data structure, redefinition of a data interface, calling of the data interface and derivation of data. The method is simple and convenient to operate, an IFC data structure is expanded based on the hydropower industry, the redefinition of the IFC data format is derived through a hydropower engineering model, the difficult problems of data circulation and interaction between different platforms are solved, the standardization of the hydropower BIM data format is realized, the application requirements in the hydropower engineering field are met, and further the development of the BIM in the hydropower industry is promoted. In addition, the attribute information of the derived hydropower model can be completely retained, and the problem of model information data loss caused by lack of definition of the hydropower specific model in the conventional hydropower model derivation process is solved.
Description
Technical Field
The invention relates to the field of hydropower BIM model conversion, in particular to a water conservancy and hydropower engineering BIM model conversion method based on IFC extension.
Background
As one of the main core technologies of hydraulic engineering informatization construction, a Building Information Modeling (BIM) technology which is converted from a traditional 2D design to a 3D digital Building design plays an important role in hydraulic engineering.
With the continuous popularization of the BIM technology in the hydropower industry, the importance of the BIM technology is more and more obvious, and a great deal of cost is invested in each department and unit of the industry for research. However, because the BIM platforms used by the respective units are different, the data models cannot be exchanged and shared due to the lack of common data standards although the BIM platforms are based on the same building model, which becomes an obstacle for restricting the development of BIM in the industry. Therefore, how to realize data circulation and interaction among different platforms becomes one of the problems to be solved in water conservancy informatization.
The IFC is used as a standard universal data exchange standard in a BIM model, so that data exchange of a large amount of software in the BIM is blocked, data and information between different platforms can be circulated, the IFC data standard is mainly a data standard provided for the building industry at present, more components and the like in the hydropower industry cannot be found in the IFC standard, and therefore the IFC standard is expanded into one of keys for promoting BIM application of the hydropower industry and enhancing hydropower informatization.
In summary, the existing obstacles exist in data communication between different platforms, and the IFC standard has the problem of incomplete component type definition in the exchange of the BIM model data and information of the hydropower engineering, so that a standardized hydropower engineering model extension method needs to be adopted to realize the data communication and interaction of the hydropower engineering between different platforms.
Disclosure of Invention
The invention aims to provide a water conservancy and hydropower engineering BIM model conversion method based on IFC expansion, which is simple to operate and convenient to use, can solve the problem of data circulation and interaction between different platforms, realizes standardization of a hydropower BIM data format, meets the application requirement in the field of hydropower engineering, and promotes the development of BIM in the water conservancy industry.
The embodiment of the invention is realized by the following steps:
a water conservancy and hydropower engineering BIM model conversion method based on IFC extension comprises the following steps:
s1 extension of IFC data Structure
Developing the transformation of a hydropower engineering BIM model of IFC extension, realizing the extension of IFC standard on the hydropower engineering model, and forming a standardized hydropower IFC data structure;
s2 redefinition of data interfaces
Redefining a description file of the standardized hydropower IFC data structure by modifying an IFC source code, wherein the description file describes the entity type of the standardized hydropower IFC data structure and the analysis mode of the standardized hydropower IFC data structure when the IFC is exported;
s3 invocation of data interface
The Autodesk Revit platform is developed for the second time, and the Autodesk Revit platform calls the description file;
s4 derivation of data
According to the entity definition requirements of the standardized hydropower IFC data structure, IAI files are written in a classified mode, expanded entity definitions are newly added, and IFC files corresponding to the standardized hydropower IFC data structure are exported.
Further, in other preferred embodiments of the present invention, the method further comprises:
and analyzing and testing the exported IFC file by using a BIMServer or a hydropower engineering BIM analysis platform.
Further, in other preferred embodiments of the invention, the extensions to the IFC data structure include the design of the hydroelectric space structure elements, the design of the hydroelectric component elements, and attribute extensions.
Further, in other preferred embodiments of the present invention, the hydroelectric engineering spatial structure units include a geospatial structure unit, a water-retaining building spatial structure unit, a flood discharge building spatial structure unit, a water-drawing and power-generating building spatial structure unit, and a diversion building spatial structure unit.
Further, in other preferred embodiments of the present invention, the hydroelectric engineering common component units include fresh water building component units, outlet building component units, diversion building construction units, power generation building component units, hydroelectric engineering geological component units, construction general arrangement component units, and electromechanical gold component units.
Further, in other preferred embodiments of the present invention, the attribute extension is performed on the basis of the original IFC data structure, and the extension of the attribute information is realized by binding with the spatial structure unit of the hydropower engineering.
Further, in other preferred embodiments of the present invention, the description file includes revit.
Further, in other preferred embodiments of the present invention, the invocation of the data interface is realized by adding Addin description and association on the basis of redefining the change.
The embodiment of the invention has the beneficial effects that:
the embodiment of the invention provides a BIM (building information modeling) model conversion method for hydraulic and hydroelectric engineering based on IFC (engineering development center) extension, which comprises the steps of extension of an IFC data structure, redefinition of a data interface, calling of the data interface and data export. The method is simple and convenient to operate, an IFC data structure is expanded based on the hydropower industry, the redefinition of the IFC data format is derived through a hydropower engineering model, the difficult problems of data circulation and interaction between different platforms are solved, the standardization of the hydropower BIM data format is realized, the application requirements in the hydropower engineering field are met, and further the development of the BIM in the hydropower industry is promoted. In addition, the attribute information of the derived hydropower model can be completely retained, and the problem of model information data loss caused by lack of definition of the hydropower specific model in the conventional hydropower model derivation process is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a general design framework provided by an embodiment of the present invention;
FIG. 2 is a block diagram of a hydroelectric space architecture of an IFC data expansion framework provided in accordance with an embodiment of the present invention;
FIG. 3 is a diagram of a method for implementing a hydropower standard BIM model conversion applied to an Autodesk Revit platform according to an embodiment of the present invention;
FIG. 4 is a view of a water retaining building space structure unit Express-G according to an embodiment of the present invention;
FIG. 5 is a view of a water retaining building element unit Express-G according to an embodiment of the present invention;
FIG. 6 is a diagram of an interface for a description of a successful installation provided by an embodiment of the present invention;
FIG. 7 is a diagram of EXP file deployment provided by an embodiment of the present invention;
fig. 8 is an operation interface diagram of an IAI file configuration option provided in the embodiment of the present invention;
fig. 9 is an operation interface diagram for selecting a corresponding IAI file according to an embodiment of the present invention;
FIG. 10 is a diagram of an IAI configuration file loading and custom operation interface according to an embodiment of the present invention;
FIG. 11 is a diagram of an IFC export option operating interface according to an embodiment of the present invention;
FIG. 12 is a diagram of an operation interface for selecting an IFC export version and export elements according to an embodiment of the present invention;
FIG. 13 is a diagram of an operation interface for selecting an IFC export attribute according to an embodiment of the present invention;
FIG. 14 is a diagram of an operation interface for selecting IFC derivation accuracy according to an embodiment of the present invention;
FIG. 15 is a diagram of an operation interface for selecting an IFC export location according to an embodiment of the present invention;
fig. 16 is an operation interface diagram for expanding IFC parsing effect according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
Examples
The embodiment of the invention provides a hydropower engineering BIM model conversion method based on IFC extension, the general schematic diagram is shown in figure 1, and the method mainly comprises the following steps:
step one, configuring a development environment:
step 101, opening source code: the open source code adopts IFC for Revit 2019;
step 102, programming environment: the programming environment adopts Visual Studio 2017;
step 103, debugging, application platform: the debugging and application platform adopts an Autodesk Revit 2019 adaptive to the open source code to carry out debugging and functional testing and application after the development of the interface development process is finished;
step 104, operating the system: the operating system adopts Windows 10;
step 105, programming language: the programming language is in C # language consistent with open source code.
And step two, debugging the source opening code in the Visual Studio 2017, adding references required in relevant codes such as RevitAPI, RevitAPI and the like, and paying attention to the fact that the reference item should use a correct version to ensure that the source code can normally run.
Step three, expanding an IFC data structure: a hydropower standard BIM model data structure in an IFC data standard is expanded on the basis of a native IFC data structure, and the hydropower standard BIM model data structure is expanded on a sharing layer and a field layer respectively. On the field level, six fields of a water retaining building field, a water outlet building field, a water diversion building field, a power generation building field, a hydroelectric power geological field and a construction arrangement field are newly added, and the related electromechanical field is also expanded; on the shared layer, shared hydropower elements are newly added, and in conclusion, the data structure expansion of the whole hydropower standard BIM model is mainly embodied in a space structure unit (IfcSpatialStructure element) and a component (IfcElement), and the corresponding public attribute set is expanded to form the hydropower standard BIM model, which is shown in FIG. 4. Taking the expansion of the information model of the water retaining building as an example:
step 301, defining basic data of the information of the water retaining building: the basic data architecture of the information model of the water retaining building consists of a space structure unit (IfcSpatialStructure element) and a component (Ifcelement). The spatial structure unit (IfcDamStructureelement) of the water retaining building comprises: a water dam section (ifcfateretamentsection), an orifice dam section (ifcforificesection), an overflow dam section (ifcflowsection), a bleed dam section (ifcfischargesection), a shipping dam section (ifcfhippingsection), a fish dam section (ifcffishersection), and a factory dam section (ifcfpowerhouse section). As shown in fig. 5. The water retaining building component unit (IfcDamElement) includes: dam body (IfcDammBody), dam orifice (IfcDamOrifies), dam pier (IfcDampier), dam beam (IfcDamGirder), dam board (IfcDamslab), dam structure layer (IfcStructure layer), dam crest anti-seismic structure (Ifcaseismic Structure), and utility of hydroelectric engineering (IfcHydraulicShareElement), among others. As shown in fig. 6.
Step 302, adding definition to the IFC source code for the type of the water retaining building: various types related to the water retaining building are added to the IFC4.EXP in the following format, and other EXP file versions can be selected for modification, and the version consistent with the modified version can be selected when the IFC file is exported later.
Taking the dam structure type as an example:
TYPE IfcDamStructureTypeEnum = ENUMERATION OF
(ARCHDAM
, GRAVITYDAM
, BUTTRESSDAM
, EARTHROCKDAM
,USERDEFINED
,NOTDEFINED);
END_TYPE;
step 303, adding definitions to IFC source codes for the water retaining building entities, specifically as follows:
step 3031, defining a space structure entity of the water retaining building: the water retaining building space structure (IfcDamStercultureTelement) is inherited from the hydraulic structure (IfcHydraulicStructTelement), is a parent class of all dam space structure elements, is added to IFC4.exp, and is added to IFC.xsd in an XML Schema format.
EXPRESS description:
ENTITY IfcDamStructureElement
ABSTRACT SUPERTYPE OF(ONEOF(IfcDam，IfcDamPart))
SUBTYPE OF (IfcHydraulicStructureElement);
END_ENTITY;
step 3032, defining the water retaining building element entity: the components in the water retaining building component unit (IfcDamElement) are added to IFC4.EXP in the following format, and other EXP file versions can be selected, and it is sufficient to note that the version selected when the IFC file is exported is consistent with the modified version, and then the components are added to ifc.xsd in the XML Schema format.
Taking the partial structure of the dam body orifice as an example:
EXPRESS description:
ENTITY IfcDamOrifices
SUBTYPE OF (IfcDamElement);
PreDefinedType : IfcDamOrificesTypeEnum;
END_ENTITY;
step 304, attribute expansion: all components of the hydroelectric engineering are derived from Ifcproduct in IFC standard, so that the Ifcproduct expression position, the geometric shape, the material property and some necessary basic properties (related definitions in Industrial basic platform Specification) are inherited. The extension of the attribute is carried out on the basis of the extension of the basic category, the extension position is located under the IFcPlatilstructureElement, and the extension attribute is divided into a permanent extension attribute, a permanent variable extension attribute, a temporary permanent extension attribute and a temporary variable extension attribute, wherein the permanent extension attribute is directly extended in the IFC file. Taking Pset _ HydropowerProject as an example, the Pset _ HydropowerProject is used as a general attribute set of the hydropower engineering project and is used for describing basic attributes of the hydropower engineering project.
Step 3041, the Pset _ HydropowerProject attribute list covers two categories, namely, engineering Name (Name) and engineering Address (Address), and is a common attribute set of IfcHydropowerState. Note that the common set of attributes encompasses. Common modeling software has the self-defining function of extending attributes, and the self-defining attributes are located in a Predefined attribute set.
In the third step: the EXP file is located under a RevitIFCTools folder in an IFC source code, and when the invention is used under an Autodesk Revit 2019 platform, the EXP file needs to be placed under a disk root directory, and the version and the deployment of the EXP file are shown in figure 7. The steps are sequentially and circularly performed until all elements needing to be expanded are added, and attention is paid to the direct logical relationship of the elements when the expansion is added.
Step four, expanding the data structure of the IFC-related hydropower engineering model: compiling dll files; in the dll file, the IFC entity type and the parsing manner when the IFC is exported are described. The code information of a hydroelectric engineering component unit and a hydroelectric engineering space structure unit is expanded by modifying IFC source codes, and the IFC data structure is expanded by generating two files of Revit.IFC.common.dll and Revit.IFC.Export.dll according to C # recompilation, wherein the specific method comprises the following steps:
step 401, recompiling of the revit. And recompiling the Revit, IFC, common and dll, adding the hydropower engineering extension type in the third step into the IFCEntityType of the corresponding version according to the standard format, and adding the extension description into the Compatibility Type for the extension of the IFC standard field layer.
Step 402, recompiling the revit.IFC.Export.dll file: and recompiling the Revit, IFC, export, dll, expanding the description of Initializer _ PsetDef, Enums and the like, and modifying the export mode.
Step five, secondarily developing Audesk Revit 2019: and calling the IFC extension interface by the Autodesk Revit platform by using Addin.
Step 501, the Autodesk Revit platform interface association: adding Addin description and association, calling the Revit.IFC.common.dll and Revit.IFC.Export.dll files, and realizing the export function defined by the extended entity.
Step 502, opening the Autodesk Revit 2019 prompts loading of the additional modules ifcexportuiover.dll, revit.ifc.exporter.dll and revit.ifc.importer.dll, and selecting always loading.
And sixthly, exporting the extended IFC data: and modifying the IAI file to enable the family file to correspond to the definition of the current extension entity.
Step 601, modifying an IAI file: according to the requirements of hydropower engineering entity definition, an IAI file is written according to the requirements in a classified mode, an expanded entity definition is added, and after the IAI file is modified, the IAI file is selected from 'file → export → IFC option' in an Autodesk Revit platform. The IAI configuration file defines components corresponding to all the families, and the family type corresponding to the professional component is selected according to the matching relation in the IAI file. The selection and customization of the IAI profile is shown in fig. 8-10.
Step 602, exporting the hydropower standard BIM file: and selecting the version and the file content which need to be exported, and exporting the IFC file corresponding to the expanded hydropower model. The invention defines the export function of the Autodesk Revit and can modify the export UI interface according to the requirement. The export function provides functions of IFC version selection, export element selection, export type selection, export precision selection and the like. The user can self-define the export information according to the engineering requirement. The specific derivation operation is shown in fig. 11 to 15.
Step 6021, selecting IFC export option, as shown in FIG. 11;
step 6022, selecting IFC derived version and derived element, as shown in FIG. 12;
step 6023, selecting IFC derived attribute, as shown in FIG. 13;
step 6024, selecting IFC derived precision, as shown in FIG. 14;
step 6025, selecting an IFC derived location as shown in FIG. 15.
Step seven, analyzing the exported file: the exported file analysis method comprises the following steps: 1. and (2) analyzing and testing the exported file by using a BIMServer, and testing the extended file by using a BIM analysis platform in the water and electricity engineering.
And 701, starting a BIMServer service, entering a bimviews management page, and performing IFC data entry. According to the standard format of the EXPREE language, the EXP file of the parser in the IFCOpenShell plug-in is modified into an expanded EXP file, and the IFC expanded file is parsed by using the processed parser. The effect of the parsed IFC extension file is shown in fig. 16.
In summary, the embodiment of the present invention provides a hydraulic and hydroelectric engineering BIM model conversion method based on IFC extension, which includes extension of IFC data structure, redefinition of data interface, invocation of data interface, and derivation of data. The method is simple and convenient to operate, an IFC data structure is expanded based on the hydropower industry, the redefinition of the IFC data format is derived through a hydropower engineering model, the difficult problems of data circulation and interaction between different platforms are solved, the standardization of the hydropower BIM data format is realized, the application requirements in the hydropower engineering field are met, and further the development of the BIM in the hydropower industry is promoted. In addition, the attribute information of the derived hydropower model can be completely retained, and the problem of model information data loss caused by lack of definition of the hydropower specific model in the conventional hydropower model derivation process is solved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A water conservancy and hydropower engineering BIM model conversion method based on IFC extension is characterized by comprising the following steps:
s1 extension of IFC data Structure
Developing the transformation of a hydropower engineering BIM model of IFC extension, realizing the extension of IFC standard on the hydropower engineering model, and forming a standardized hydropower IFC data structure;
s2 redefinition of data interfaces
Redefining a description file of the standardized hydroelectric IFC data structure by modifying an IFC source code, the description file describing the entity types of the standardized hydroelectric IFC data structure and the manner in which the standardized hydroelectric IFC data structure is parsed when deriving the IFC;
s3 invocation of data interface
The Autodesk Revit platform is developed for the second time, and the Autodesk Revit platform calls the description file;
s4 derivation of data
According to the entity definition requirements of the standardized hydropower IFC data structure, IAI files are written in a classified mode, expanded entity definitions are newly added, and IFC files corresponding to the standardized hydropower IFC data structure are exported.
2. The IFC extension-based BIM (building information modeling) model conversion method for hydraulic and hydroelectric engineering according to claim 1, further comprising:
and analyzing and testing the exported IFC file by using a BIMServer or hydropower engineering BIM analysis platform.
3. The IFC extension-based BIM conversion method for hydraulic and hydroelectric engineering according to claim 1, wherein the extension of the IFC data structure comprises design of spatial structure units of hydroelectric engineering, design of structural elements of hydroelectric engineering and attribute extension.
4. The IFC extension-based BIM conversion method for hydraulic and hydroelectric engineering according to claim 3, wherein the spatial structure units of hydroelectric engineering comprise geological space structure units, water retaining building spatial structure units, flood discharging building spatial structure units, water diversion and power generation building spatial structure units and diversion building spatial structure units.
5. The IFC extension-based hydraulic and hydroelectric engineering BIM model conversion method according to claim 3, wherein the hydroelectric engineering common component units comprise fresh water building component units, outlet building component units, diversion building construction units, power generation building component units, hydroelectric engineering geological component units, construction general layout component units, and electro-mechanical gold component units.
6. The BIM conversion method for the hydraulic and hydroelectric engineering based on the IFC extension is characterized in that the attribute extension is performed on the basis of a native IFC data structure, and the attribute information is extended by binding with the spatial structure unit of the hydroelectric engineering.
7. The BIM model conversion method for the water conservancy and hydropower engineering based on the IFC extension is characterized in that the description file comprises Revit.
8. The BIM model conversion method for water conservancy and hydropower engineering based on IFC extension of claim 7, wherein the calling of the data interface is realized by adding Addin description and association on the basis of redefining Revit.
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| CN116011088A (en) * | 2023-03-20 | 2023-04-25 | 天津大学 | Carbon emission calculation method and device for assembled bridge engineering based on IFC expansion |
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