Structural Reinforcements
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Optimized design of RC deep beams based on performance metrics applied to strut and tie model and in-plane stress conditions
Abstract Deep beams do not behave according to classical beam theory. The nonlinearity of strain distribution within these elements requires application of strut and tie models (STM) or other alternatives to evaluate the complex stress field. Although the design of these elements is a common task for structural engineers, limited research is found on assessi
Lat. Am. j. solids struct.. Publicado em: 22/08/2019
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2. Evaluation of the resistance of trussed slabs with steel formwork in cold formed U profile
Abstract In the last decades, the modernization in structural engineering has increased the use of steel-concrete composite and hybrid systems for slabs, when the adherence in the interface of the materials is present or not, respectively. In addition to the traditional steel deck, a similar solution for precast trussed slabs has been used for small construc
Lat. Am. j. solids struct.. Publicado em: 12/08/2019
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3. Monitoring reinforcement corrosion of concretes designed for nuclear facilitie
ABSTRACT The facilities designed for the peaceful activities of nuclear energy are made with different materials, among them, reinforced concrete. This material, in addition to being structural, is a barrier for isolation and confinement from the environment of the radioactive materials. One of its degradation mechanisms is the corrosion of the reinforcement
Matéria (Rio J.). Publicado em: 19/07/2018
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4. Estimation of RC slab-column joints effective strength using neural networks
The nominal strength of slab-column joints made of highstrength concrete (HSC) columns and normal strength concrete (NSC) slabs is of great importance in structural design and construction of concrete buildings. This topic has been intensively studied during the last decades. Different types of column-slab joints have been investigated experimentally providi
Latin American Journal of Solids and Structures. Publicado em: 2011
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5. Estudo do desempenho de reforços poliméricos em estruturas veiculares submetidas a impacto. / Study of polimeric reinforcements in vehicular structures subjected to impacts.
The objective of this work is to show the application of structural reinforcements using the polymeric material PA66 through finite element simulations in the field of vehicle safety. The preformed structural reinforcements have shown good performance in crash tests, where the great advantage is their reduced weight. These reinforcements are designed with th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2010
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6. Contribuição ao controle tecnológico de concretos estruturais de cimento Portland em ambientes marítimos. / Contribution to field quality control of Portland cement structural concretes in maritime environments.
A durabilidade dos edifícios em concreto armado só pode ser alcançada se for atendido um conjunto de requisitos e critérios nas etapas de projeto, execução e manutenção, nas quais os materiais envolvidos precisam ser adequadamente especificados, produzidos e empregados, de acordo com as respectivas rotinas dessas etapas. Assim, o requisito genérico
Publicado em: 2010
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7. Projeto e elaboração de um dispositivo para remodelagem de fibras como subsistema do processo de enrolamento filamentar / Design and implementation of a remodeling fiber system to the filament winding process
This dissertation deals with the use of fiber reinforcements, in order to improve its appliance in filament winding machines. Throughout this work it is created a mechanism system to remodel the fiber filaments from rovings to the part that is been produced. Finite element analyses and experimental tests are performed to validate the system as part of the fi
Publicado em: 2009
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8. Avaliação de concretos reforçados por confinamento com manta de fibra de vidro estrutural e pré-impreganada
Due to the occurrence of diseases in the use of structural reinforcements in composites, with presentation of concrete blanket detachment, has been identified the need to evaluate the performance of concrete reinforced with glass fiber. This study aims to evaluate these concretes by means of testing methodologies, using concrete with low resistance with stru
Publicado em: 2009
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9. Cálculo de lajes lisas com protensão parcial e limitada.
Flat slabs are associated with rationalization, better esthetic conditions and higher speed during construction. The use of post-tension can make this system viable since it strongly improves the structural performance in respect to punching and in case of extreme deflection of the slab. The durability of prestressed concrete elements is assured by meeting t
Publicado em: 2005
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10. Exploitation of carbon fiber and glass fiber to reinforcements of timber beams. / Utilização de fibras de carbono e de fibras de vidro para reforço de vigas de madeira.
The necessity of rehabilitation and reinforcement in wood structures, concrete and steel demanded a search for more efficient methods that could to carry this paper. With this objectives several studies are using fibers reinforced polymers (FRP). These fibers which presenting better results in structural reinforcement for structural pieces of wood are the fi
Publicado em: 2002
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11. Compósitos de matriz de alumínio reforçados com aluminetos de níquel: fabricação e caracterização mecânica e estrutural
In recent years, aluminium alloys have been increasingly applied a as sctructural material in composite as metal-matrix due to their excellent mechanical properties and low weight. The reinforcements materials are of fundamental importance in composite materials, due to their responsibility to support stresses acting one the metal-matrix. Therefore, ceramic
Publicado em: 2002
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12. Contribuição ao estudo das propriedades fisicas e mecanicas dos polimeros reforçados com fibras de carbono
The reinforcement area and structural recovery presented a great evolution, starting from the appearance of new techniques, as the employment of composites of carbon fiber. This work will investigate the physical and mechanical properties of the materials involved in this composite, as the resins, the sticker and the carbon fibers, verifing if the obtained v
Publicado em: 2002