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http://dx.doi.org/10.12989/sem.2012.44.2.239

An initial investigation of the inverted trussed beam formed by wooden rectangular cross section enlaced with wire rope  

Gesualdo, F.A.R. (School of Civil Engineering, Federal University of Uberlandia)
Lima, M.C.V. (School of Civil Engineering, Federal University of Uberlandia)
Publication Information
Structural Engineering and Mechanics / v.44, no.2, 2012 , pp. 239-255 More about this Journal
Abstract
This work presents a contribution to understand the inverted trussed beams behavior. The system has a main beam and struts with rectangular cross section associated to a wire rope enlaced to the main beam. It is an unpublished system with the advantage of easy positioning of the wire rope, once it is a continuous and connected by turnbuckles. It is a system that can be used as support for concrete formworks or for rehabilitation wooden beams proposal. The enlacement of the cable demands a small notch at the top of the cross section and a cross pin at the bottom. Six inverted trussed beams were tested, with spans of 180 cm with cables diameter of 1/4". Additionally, four simple beams without any external steel cable were also tested with material from the same lot of wood, allowing a comparison in rupture. The results showed capacity gain of around 60% compared to a simple beam. Once the wire rope characteristics and anchoring are very important for structure response, some improvement suggestions for the efficiency of the cables are also presented.
Keywords
inverted trussed beam; wire rope; rectangular section; notch;
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1 Ansys (2010), Release 11.1 Documentation for ANSYS. SAS IP, Inc. Canonsburg.
2 Augelli, F., Colla, C. and Mastropirro, R. (2005), "Inspection & NDT to verify structural reliability of historic wooden roofs in the ex-Meroni spinning-mill", Structural Analysis of Historical Constructions, Eds. Modena et al., London, 1, 377-385.
3 Bodig, J. and Jayne, B.A. (1982), Mechanics of Wood and Wood Composites, Van Nostrand Reinhold Company, New York.
4 Boresi, A.P., Schmidt, R.J. and Sidebottom, O.M. (1993), Advanced Mechanics of Materials, 5 Edition, John Wiley & Sons, New York.
5 Branco, J.M., Maurizio Piazza, M. and Cruz, P.J.S. (2010), "Structural analysis of two King-post timber trusses: Non-destructive evaluation and load-carrying tests", Constr. Build. Mater., 24, 371-383.   DOI   ScienceOn
6 Carroll, W.F. (1999), A Primer for Finite Elements in Elastic Structures, John Wiley & Sons, New York.
7 Feio, A.O., Machado, J.S. and Cunha, V.M. (2011), "Reforco de Estruturas de Madeira por Recurso a Elementos de Betao Armado e Metalicos", Proceeding of CIMAD $11-1^{\circ}$ Congresso Ibero-LatinoAmericano da Madeira na Construcao, Coimbra.
8 Farrow, C.B. (2009), "Evaluation of a prototypical mechanical wood truss ladder", Auto. Constr., 18, 1114-1122.   DOI   ScienceOn
9 Gesualdo, F.A.R. and Cunha, T.A. (2009), "Two wood inverted trussed beams using transverse steel pins evaluated via finite element method compared with reticulated system". Proceedings of III Jornadas Chilenas de Estructuras de Madera y el I Congreso Latinoamericano de Estructuras de Madera, Concepcion-Chile, 1, 1-13.
10 Gestrut: Analysis of Three-dimensional Reticulated Structures - Software, Educational version (2010), Uberlandia, School of Civil Engineering, Federal University of Uberlandia.
11 Herzog, T., Natterer, J., Schweitzer, R., Volz, M. and Winter, W. (2004), Timber Construction Manual, Munich, Birkhauser.
12 Hurd, M.K. (2005), Formwork for Concrete, 7 Edition, Farmington Hills, ACI.
13 Kim, M.Y., Kim, T.Y. and Park, C.B. (2009), "Treatment of western wooden roof trusses in early 20th Century Korea", J. Asian Arch. Build. Eng., 8(1), 49-56.   DOI   ScienceOn
14 Khayat, K.H. and Assaad, J.J. (2008), "Measurement systems for determining formwork pressure of highlyflowable concrete", Mater. Struct., 41, 37-46.
15 Pantelides, C.P., Romero, P. and Reaveleya, L.D. (2010), "Rehabilitation of splice connections of wood trusses with FRP composites", Constr. Build. Mater., 24, 37-45.   DOI   ScienceOn
16 Ritter, M.A. and Fahert, K.F. (1999), Miscellaneous Wood Structures, Faherty, K.F. and Williamson, T.G. Wood Engineering and Construction, 3 Edition, McGraw Hill, Boston.
17 Santana, C.L.O. and Mascia, N.T. (2009), "Wooden framed structures with semi-rigid connections: quantitative approach focused on design needs", Struct. Eng. Mech., 31(3), 315-331.   DOI
18 Sarrate, J. and Huerta, A. (2002), "Generacion automatica de mallas no estructuradas y formadas exclusivamente por cuadrilateros sobre superficies curvas en $R^3$". Revista Internacional Metodos numericos para calculo y diseno en ingenieria, 18(1), 14.