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Article: Resolving the artificial flexure problem in the frame method

TitleResolving the artificial flexure problem in the frame method
Authors
Issue Date1993
PublisherThomas Telford Ltd. The Journal's web site is located at http://www.structuresandbuildings.com
Citation
Proceedings Of The Institution Of Civil Engineers: Structures And Buildings, 1993, v. 99 n. 1, p. 1-14 How to Cite?
AbstractThe frame method has been found to yield erroneous results when applied to coupled shear/core walls in which shear deformation is significant. There are two sources of error. Firstly, the nodal rotations at the beam-wall joints have been mistaken as the rotations of the horizontal rigid arms, while the correct rotations should be the rotations of the vertical fibres there. Secondly, because of the discrete modelling of the continuous connection between adjacent wall units, the wall units are subjected to parasitic moments which cause artificial flexure and, subsequently, excessive shear deformation of the walls. Attempts to overcome these problems have been made in references 1 and 2. However, the artificial flexure problem has remained only partly solved. In this Paper, it is asserted that, as the root cause of the artificial flexure problem is the occurrence of relative slip along the vertical joints between adjacent wall elements, the most complete way of solving the problem is to restore compatibility between the wall elements. By starting with Kwan's strain-based element and suppressing the nonconforming displacement along the vertical wall joints so that compatibility is restored, a new method which is not affected any more by artificial flexure is developed.
Persistent Identifierhttp://hdl.handle.net/10722/150002
ISSN
2015 Impact Factor: 0.429
2015 SCImago Journal Rankings: 0.323

 

DC FieldValueLanguage
dc.contributor.authorKwan, AKHen_US
dc.date.accessioned2012-06-26T06:01:02Z-
dc.date.available2012-06-26T06:01:02Z-
dc.date.issued1993en_US
dc.identifier.citationProceedings Of The Institution Of Civil Engineers: Structures And Buildings, 1993, v. 99 n. 1, p. 1-14en_US
dc.identifier.issn0965-0911en_US
dc.identifier.urihttp://hdl.handle.net/10722/150002-
dc.description.abstractThe frame method has been found to yield erroneous results when applied to coupled shear/core walls in which shear deformation is significant. There are two sources of error. Firstly, the nodal rotations at the beam-wall joints have been mistaken as the rotations of the horizontal rigid arms, while the correct rotations should be the rotations of the vertical fibres there. Secondly, because of the discrete modelling of the continuous connection between adjacent wall units, the wall units are subjected to parasitic moments which cause artificial flexure and, subsequently, excessive shear deformation of the walls. Attempts to overcome these problems have been made in references 1 and 2. However, the artificial flexure problem has remained only partly solved. In this Paper, it is asserted that, as the root cause of the artificial flexure problem is the occurrence of relative slip along the vertical joints between adjacent wall elements, the most complete way of solving the problem is to restore compatibility between the wall elements. By starting with Kwan's strain-based element and suppressing the nonconforming displacement along the vertical wall joints so that compatibility is restored, a new method which is not affected any more by artificial flexure is developed.en_US
dc.languageengen_US
dc.publisherThomas Telford Ltd. The Journal's web site is located at http://www.structuresandbuildings.comen_US
dc.relation.ispartofProceedings of the Institution of Civil Engineers: Structures and Buildingsen_US
dc.titleResolving the artificial flexure problem in the frame methoden_US
dc.typeArticleen_US
dc.identifier.emailKwan, AKH:khkwan@hkucc.hku.hken_US
dc.identifier.authorityKwan, AKH=rp00127en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0027543113en_US
dc.identifier.volume99en_US
dc.identifier.issue1en_US
dc.identifier.spage1en_US
dc.identifier.epage14en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridKwan, AKH=7101738204en_US

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