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Coupled and uncoupled nonlinear elastic finite element models formonotonically loaded sheathing-to-framing joints in timber based shear walls
Linnaeus University, Faculty of Science and Engineering, School of Engineering. (Byggteknik)
Linnaeus University, Faculty of Science and Engineering, School of Engineering. (Byggteknik)ORCID iD: 0000-0002-5333-0682
Linnaeus University, Faculty of Science and Engineering, School of Engineering. (Byggteknik)
2010 (English)In: Engineering structures, ISSN 0141-0296, E-ISSN 1873-7323, Vol. 32, no 11, p. 3433-3442Article in journal (Refereed) Published
Abstract [en]

Four different elastic models for sheathing-to-framing connections are presented and evaluated on asingle connection level and on a shear wall level. Since the models are elastic in their nature they aresuitable mainly for cases where the sheathing-to-framing connections are subjected to monotonicallyincreasing displacements. Of the four models one is uncoupled and the others are coupled with respect tothe two perpendicular displacement directions in a two-dimensional model. Two of the coupled modelsare non-conservative, while the third is conservative, indicating a path independency with respect to thework done to reach a defined state of deformation. When the different models are compared it is obviousthat the uncoupled model gives strength and stiffness values higher than the others; however it is notobvious which of the models to use in a shear wall analysis, each of the models having its advantages anddisadvantages. For the experimental data used as input in the analyses of this study however, a couplednon-conservative model seems the most appropriate.

Place, publisher, year, edition, pages
Elsevier , 2010. Vol. 32, no 11, p. 3433-3442
Keywords [en]
Shear walls, Coupled model, Sheathing-to-framing joint, Finite element method
National Category
Building Technologies
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-9202DOI: 10.1016/j.engstruct.2010.05.018Scopus ID: 2-s2.0-77957304222OAI: oai:DiVA.org:lnu-9202DiVA, id: diva2:359716
Available from: 2010-10-29 Created: 2010-10-29 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Analysis of shear wallsfor multi-storey timber buildings
Open this publication in new window or tab >>Analysis of shear wallsfor multi-storey timber buildings
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This doctoral thesis addresses questions of how wind loads acting on multistoreytimber buildings can be dealt with by structural design of such buildings.The conventional use of sheathing either nailed or screwed to a timberframework is considered, together with other stabilizing structures such ascross-laminated timber panels.The finite element method was employed in simulating the structuralbehaviour of stabilizing wall units. A series of studies was carried out of walls inwhich the sheathing was nailed to a timber frame. Different structural levelswere studied starting with modelling the performance of single sheathing-toframingconnections, to the use of models for studying the overall structuralbehaviour of walls. The results of calculations using models for simulation ofwalls subjected to different loading agree reasonably well with experimentalresults. The structural properties of the connections between the sheathing andthe frame, as well as of the connections between the members of the frame,were shown to have a substantial effect on the simulated behaviour of shearwall units. Both these types of connections were studied and described inappended papers.Regarding cross-laminated timber wall panels, it was concluded that walls witha high level of both stiffness and strength can be produced by the use of suchpanels, and also that the connections between the solid wall panels can bedesigned in such a way that the shear forces involved are transmitted from onepanel to the next in an efficient manner.Other topics in the thesis include the properties of connections between shearwalls and the rest of the building. Typically high tension forces occur at specificpoints in a timber structure. These forces need to be transmitted downwards inthe structure, ultimately connecting them to the substrate. A lap-joint that maybe used for this purpose has been studied using generalized Volkersen theory.Finally the maximum capacity of a conventional rail to substrate connection hasbeen examined using linear and nonlinear fracture mechanics.

Place, publisher, year, edition, pages
Växjö, Kalmar: Linnaeus University Press, 2011
Series
Linnaeus University Dissertations ; 45/2011
Keywords
multi-storey structures, timber engineering, wind stabilization, shear walls, cross-laminated timber wall panels, fasteners, sheathing-to-framing connections
National Category
Building Technologies
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
urn:nbn:se:lnu:diva-11489 (URN)978-91-86491-73-4 (ISBN)
Public defence
2011-05-06, M1083, Hus M, Lückligs Plats 1, Växjö, 10:00 (English)
Opponent
Supervisors
Available from: 2011-05-02 Created: 2011-04-28 Last updated: 2011-05-02Bibliographically approved

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Vessby, JohanSerrano, ErikOlsson, Anders

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