Timber Beams
Mostrando 1-12 de 23 artigos, teses e dissertações.
-
1. Number of laminae on the mechanical behavior of glued laminated timber (glulam) of Toona ciliata produced with vegetable polyurethane adhesive
RESUMO A madeira laminada colada (MLC) é um material compósito obtido a partir da colagem de lâminas de madeira dispostas com as fibras paralelas entre si. O objetivo deste trabalho foi avaliar a influência do número de lâminas no comportamento mecânico de MLC de Toona ciliata produzidas com adesivo poliuretano de base vegetal. As vigas de MLC foram p
Ciênc. agrotec.. Publicado em: 20/12/2019
-
2. CHEMICALLY TREATED GLUED LAMINATED PARICÁ TIMBER (Schizolobium parahyba var. amazonicum)
ABSTRACT In the production of glue-laminated timber (GLT), boards derived from planted forest wood with easy workability are glued on top of one another. The main objective of the present work was to evaluate the performance of paricá timber GLT beams (5 × 10 cm) on GLT. Three procedures were performed: (1) GLT beams (5 × 10 cm) were produced using natura
Eng. Agríc.. Publicado em: 25/04/2019
-
3. TIMBER BEAM REPAIR BASED ON POLYMER-CEMENTITIOUS BLENDS
ABSTRACT This study aims to manufacture and apply polymer-cementitious blends based on a combination of epoxy polymer and Ordinary Portland Cement (OPC) for timber beam repair. The material was used to repair timber beams of “Maçaranduba” (Manilkara sp.) and “Cedro doce” (Cedrella spp) wood species. A full factorial design was conducted to investiga
Eng. Agríc.. Publicado em: 2017-04
-
4. Evaluation of Tensile Strength of a Eucalyptus grandis and Eucalyptus urophyla Hybrid in Wood Beams Bonded Together by Means of Finger Joints and Polyurethane-Based Glue
Created in the 1940s, the splice finger-joint type for wood has now been more used to compose structural materials wood base as Glued Laminated Timber (Glulam) and Cross Laminated Timber (CLT). The main advantage of this amendment is to provide a simple and economical way to join timber parts on segments. This study evaluated by means of tensile tests the ca
Mat. Res.. Publicado em: 22/09/2016
-
5. Influence of nails size and layout to obtain the reduction coefficient of moment of inertia for timber beams with composite cross section
ABSTRACT A significant portion of rural building’s roof is supported by timber trusses. Increasing distance between the trusses can be achieved by using composite cross sections ("T" and "I") for beams. With this, it is possible to reduce the number of columns and trusses, bringing significant savings in material and the desired cost reduction, mainly usin
Eng. Agríc.. Publicado em: 2016-08
-
6. Análise de confiabilidade de peças de madeira fletidas dimensionadas segundo a NBR 7190/97 / Reliability analysis of bending timber members designed according NBR 7190/97
A passagem do método das tensões admissíveis para o método dos estados limites na NBR 7190 - Projeto de Estruturas de Madeira, ocorrida em 1997, foi feita por meio de calibração determinística que teve como ponto central a resistência da madeira na compressão paralela às fibras. Um dos aspectos modificados foi o dimensionamento de peças fletidas n
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/11/2011
-
7. Glulam-concrete composites: experimental investigation into the connection system
Timber-concrete composite structures work appropriately when a suitable connection system is included because the degree of interaction between the materials stiffs the structural system. Thereby, it is extremely important to improve the knowledge about their connection system. The purpose of this paper is to show the results obtained by experimental investi
Materials Research. Publicado em: 26/01/2011
-
8. Modular bridge timber trusses system: a good alternative to the Para State / Sistemas de treliças modulares para pontes de madeira: uma boa alternativa para o Estado do Pará
The Para state has an area of 1.253.164,49 KM POT.2; it has an abundant hydrography and nearly 19.253,35 Km of vicinal roads, that are cut by many rivers. In this context, the construction of bridges with small and medium spans is essential to the improvement of intercity and interstate transportation. The system of modular timber truss bridges, was already
Publicado em: 2010
-
9. Influência de um corte na borda tracionada de uma viga maciça simulando uma emenda de topo na lâmina inferior de vigas laminadas coladas / The influence of a cut in the tensioned edge of a solid beam simulating a butt joint at the bottom lamination of glued laminated beams
A madeira laminada colada (MLC) é um produto estrutural que permite racionalizar o uso da madeira sólida, pois a partir de pequenas peças selecionadas e preparadas é possível produzir grandes vigas das mais variadas formas. A utilização da madeira de reflorestamento na produção de MLC lhe confere vantagens ambientais sobre outros materiais e o Eucal
Publicado em: 2010
-
10. Timber-concrete composite structures: evaluation of GFRP reinforced glulam beams / Estruturas mistas de madeira-concreto: avaliação das vigas de madeira laminada colada reforçadas com fibras de vidro
No cenário da produção de edificações sustentáveis, a madeira laminada colada (MLC) ocupa lugar de destaque, sobretudo pela possibilidade de emprego de madeiras provenientes de florestas plantadas. Com o propósito de amenizar os problemas de durabilidade, quando exposta às intempéries, uma solução pressupõe a associação das vigas de MLC com um
Publicado em: 2009
-
11. Evaluation of the equivalent slip modulus of nailed connections for application in linear analysis of plywood timber beams
The study of the stiffness of laterally loaded semi-rigid connections in plywood-timber beams is justified by the influence that the deformation of the connection has on the overall displacements of the structure. Semi-rigid connections are characterized by the occurrence of a slip between the connected pieces. The characterization of a connection is usually
Materials Research. Publicado em: 2008-06
-
12. Avaliação do comportamento mecânico ao cisalhamento de conectores de barras de aço com ganchos em vigas mistas de madeira laminada colada e concreto
The main objective of this work was to propose a reference specimen for the push-out test of rod-type fasteners in timber-concrete connections. The following experimental tests have been performed in order to achieve the goals of this research: pull-out tests of bonded-in steel rods in wood specimens, pull-out tests of bonded-in steel rods in concrete specim
Publicado em: 2008