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Keywords: timber structures, timber-frame wall elements, fibre-plaster boards, openings, mathematical modeling, numerical analysis, nonlinear behaviour.

Summary

This paper presents a numerical analysis of the horizontal load-bearing resistance of timber framed wall elements coated with single fibre plaster boards (FPB) that can be used in the construction of single- or multi-storey prefabricated buildings. The research deals with both the full elements (without any opening) and with elements containing an opening. The study represents a continuation of the experimental research realized recently. The horizontal load-bearing capacity of FPB-sheated timber-frame wall elements is mainly dependent on the relatively low tensile resistance and the consequent occurence of cracks in the FPB. In the numerical model, the brittle behaviour of the FPB under tensile stresses is proposed to be modeled by using shell elements that allow for nonlinear material behaviour. The results of the numerical analyses corresponded well with the results of the experimental tests. Further, the possible impact of the wall elements with openings on the load-bearing capacity of wall systems subjected to horizontal (wind and especially earthquake) loads is discussed. A comparative study has shown that the influence may be considerable. By carrying a part of the load these elements improve the structure's elastic resistance, while in the post-elastic phase they provide additional ductility. Also, the strength and the ultimate capacity of the wall system are improved. In terms of structural safety, therefore, the elements with openings have a beneficial effect during moderate earthquakes, but also in the case of a severe earthquake. It was concluded that the methods currently available in the European design codes underestimate the capacity of wall elements with openings. This may result in inadequate modeling of structural behaviour and indicates the need for more accurate methods.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 102 PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: Paper 127 Numerical Analysis of the Horizontal Capacity of Timber-Frame Wall Elements E. Kozem Šilih, M. Premrov and S. Šilih Faculty of Civil Engineering, University of Maribor, Maribor, Slovenia doi:10.4203/ccp.102.127 purchase the full-text of this paper Full Bibliographic Reference for this paper , "Numerical Analysis of the Horizontal Capacity of Timber-Frame Wall Elements", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 127, 2013. doi:10.4203/ccp.102.127 Keywords: timber structures, timber-frame wall elements, fibre-plaster boards, openings, mathematical modeling, numerical analysis, nonlinear behaviour. Summary This paper presents a numerical analysis of the horizontal load-bearing resistance of timber framed wall elements coated with single fibre plaster boards (FPB) that can be used in the construction of single- or multi-storey prefabricated buildings. The research deals with both the full elements (without any opening) and with elements containing an opening. The study represents a continuation of the experimental research realized recently. The horizontal load-bearing capacity of FPB-sheated timber-frame wall elements is mainly dependent on the relatively low tensile resistance and the consequent occurence of cracks in the FPB. In the numerical model, the brittle behaviour of the FPB under tensile stresses is proposed to be modeled by using shell elements that allow for nonlinear material behaviour. The results of the numerical analyses corresponded well with the results of the experimental tests. Further, the possible impact of the wall elements with openings on the load-bearing capacity of wall systems subjected to horizontal (wind and especially earthquake) loads is discussed. A comparative study has shown that the influence may be considerable. By carrying a part of the load these elements improve the structure's elastic resistance, while in the post-elastic phase they provide additional ductility. Also, the strength and the ultimate capacity of the wall system are improved. In terms of structural safety, therefore, the elements with openings have a beneficial effect during moderate earthquakes, but also in the case of a severe earthquake. It was concluded that the methods currently available in the European design codes underestimate the capacity of wall elements with openings. This may result in inadequate modeling of structural behaviour and indicates the need for more accurate methods. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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