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Main Page of the
Journal
Main Page of the WSEAS
May 2007,
June 2007,
July 2007,
August 2007,
September 2007,
October 2007,
November 2007,
December 2007,
2008
WSEAS TRANSACTIONS
on
APPLIED and THEORETICAL MECHANICS
Issue 9, Volume 2, September 2007
Print
ISSN: 1991-8747
E-ISSN: 2224-3429 |
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Title of the Paper: Slip Modeling in Timber-Framed Walls with Wood-Based or
Fibre-Plaster Sheathing Boards
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Authors: M. Premrov, P. Dobrila, B.S. Bedenik, I. Špacapan
Abstract: The paper provides mathematical modelling for prefabricated timber-framed walls composed of a timber
frame and two different types of sheathing boards. Since by wood-based boards (WBB) the tensile strength is similar to
the compressive one, there are practically no cracks appearing in the boards. On the other hand, in case of fibre-plaster
sheathing boards (FPB) the tensile strength is approximately 10-times lower than the compressive one and therefore
cracks in the tensile diagonal board’s direction usually appear. Based on analysis of experimental research results [1]
special approximate mathematical models have been developed. The models enable simultaneously to consider the
flexibility of mechanical fasteners in the connecting areas, as well as possible cracks appearing in the tensile area of the
sheathing boards.
Keywords: Timber structures, Walls, Slip, CFRP, Modelling
Title of the Paper: Analysis of composite T beam composed of timber, concrete and carbon strip
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Authors: Matjaž Tajnik, Peter Dobrila, Miroslav Premrov
Abstract: This paper provides a mathematical model and numerical example of composite T-section composed of a
concrete plate and a timber beam strengthened at the bottom tension side with a carbon fibre-reinforced polymer
(CFRP) strip. Analysis is provided in accordance with the European standards for timber, steel and concrete structures.
The tensile strength of the carbon strip as well as the compressive strength of the concrete plate are higher than the
bending strength of the timber beam, therefore it is convenient to use such composition of material to gain a higher
load bearing capacity. It has been shown that the inclusion of CFRP strip reinforcement on the increase of load carrying
and bending stiffness capacity was not as high as expected. On the other hand, we realized the importance of variety of
material grade and geometrical properties combinations between sub-components which can significantly improve load
bearing capacity and stiffness of composed beam. Furthermore, the CFRP strip contribution to the bending resistance
and stiffness of the element is presented as a function of the fastener spacing intervals between concrete plate and
timber beam.
Keywords: Composite structures, Timber structures, Carbon strip, Load bearing capacity, Modelling,
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