File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: An algorithm to facet curved walls in IFC BIM for building energy analysis

TitleAn algorithm to facet curved walls in IFC BIM for building energy analysis
Authors
KeywordsBuilding energy model
Building geometric information
Building Information Model (BIM)
Curved wall
Industry Foundation Class (IFC)
Issue Date2019
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/autcon
Citation
Automation in Construction, 2019, v. 103, p. 80-103 How to Cite?
AbstractThe automatic transformation of a Building Information Model (BIM) in Industry Foundation Classes (IFC) to a building energy model (BEM) demonstrates significant benefits on the improvement of efficiency and accuracy in a building energy modeling process. However, so far, building objects with curved surfaces in IFC models are not supported by existing transformation approaches as they only handle polyhedral geometries. This study presents an algorithm to automatically facet curved walls and convert their geometries into polyhedrons, so that they can be further processed by existing transformation approaches. In the process of faceting curved walls, geometric connections between each target wall and adjacent walls are detected and handled to maintain the connections in the results. Furthermore, the algorithm updates the geometries of relevant building objects, including straight walls connected to curved walls, openings (i.e., windows and doors) on curved walls and spaces enclosed by curved walls, based on the faceted geometries. This removes curved surfaces of these objects on the one hand, and maintains their geometric relationships on the other. Moreover, slabs with the curved surfaces are also faceted. This algorithm takes an IFC BIM that pertains to the model view definition Concept Design BIM 2010 as an input. It generates a new IFC BIM, in which all curved walls and relevant building objects are represented as polyhedral geometries with correct geometric relationships. A prototype application that implements the algorithm was developed to evaluate the performance of the algorithm with a simple building model and a complex real-world building model. In the results, all the curved walls were faceted, and all relevant straight walls, openings, spaces and slabs were correctly updated, which indicated that the algorithm worked as intended.
Persistent Identifierhttp://hdl.handle.net/10722/269548
ISSN
2020 Impact Factor: 7.7
2020 SCImago Journal Rankings: 1.837
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYING, H-
dc.contributor.authorLee, SH-
dc.date.accessioned2019-04-24T08:09:56Z-
dc.date.available2019-04-24T08:09:56Z-
dc.date.issued2019-
dc.identifier.citationAutomation in Construction, 2019, v. 103, p. 80-103-
dc.identifier.issn0926-5805-
dc.identifier.urihttp://hdl.handle.net/10722/269548-
dc.description.abstractThe automatic transformation of a Building Information Model (BIM) in Industry Foundation Classes (IFC) to a building energy model (BEM) demonstrates significant benefits on the improvement of efficiency and accuracy in a building energy modeling process. However, so far, building objects with curved surfaces in IFC models are not supported by existing transformation approaches as they only handle polyhedral geometries. This study presents an algorithm to automatically facet curved walls and convert their geometries into polyhedrons, so that they can be further processed by existing transformation approaches. In the process of faceting curved walls, geometric connections between each target wall and adjacent walls are detected and handled to maintain the connections in the results. Furthermore, the algorithm updates the geometries of relevant building objects, including straight walls connected to curved walls, openings (i.e., windows and doors) on curved walls and spaces enclosed by curved walls, based on the faceted geometries. This removes curved surfaces of these objects on the one hand, and maintains their geometric relationships on the other. Moreover, slabs with the curved surfaces are also faceted. This algorithm takes an IFC BIM that pertains to the model view definition Concept Design BIM 2010 as an input. It generates a new IFC BIM, in which all curved walls and relevant building objects are represented as polyhedral geometries with correct geometric relationships. A prototype application that implements the algorithm was developed to evaluate the performance of the algorithm with a simple building model and a complex real-world building model. In the results, all the curved walls were faceted, and all relevant straight walls, openings, spaces and slabs were correctly updated, which indicated that the algorithm worked as intended.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/autcon-
dc.relation.ispartofAutomation in Construction-
dc.subjectBuilding energy model-
dc.subjectBuilding geometric information-
dc.subjectBuilding Information Model (BIM)-
dc.subjectCurved wall-
dc.subjectIndustry Foundation Class (IFC)-
dc.titleAn algorithm to facet curved walls in IFC BIM for building energy analysis-
dc.typeArticle-
dc.identifier.emailLee, SH: shlee1@hku.hk-
dc.identifier.authorityLee, SH=rp01910-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.autcon.2019.03.004-
dc.identifier.scopuseid_2-s2.0-85062863859-
dc.identifier.hkuros297486-
dc.identifier.volume103-
dc.identifier.spage80-
dc.identifier.epage103-
dc.identifier.isiWOS:000466828500007-
dc.publisher.placeNetherlands-
dc.identifier.issnl0926-5805-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats