Strengthened Of Beams
Mostrando 13-18 de 18 artigos, teses e dissertações.
-
13. Flexural strengthening and stiffness increasing of precast beam-to-column connections by NSM CFRP strips / Reforço e incremento da rigidez à flexão de ligações viga-pilar de estruturas de concreto pré-moldado com polímero reforçado com fibra de carbono (PRFC)
This work presents the development of a technique for flexural strengthening and stiffness increasing of precast beam-to-column connections by the embedding of FRP strips into grooves made on the concrete cover. According to this technique, the tension in the connection is transferred by the Near-Surface Mounted (NSM) FRP strips. To allow the transference of
Publicado em: 2007
-
14. ESTUDO DO REFORÇO EXTERNO À FORÇA CORTANTE EM VIGAS DE CONCRETO ARMADO UTILIZANDO COMPÓSITOS DE FIBRAS DE CARBONO / A STUDY OF EXTERNAL SHEAR STRENGTHENING OF REINFORCED CONCRETE BEAMS USING CARBON FIBER COMPOSITES
The increasing demand for reinforcement of concrete structures using carbon fiber composites was the main motivation of this work. This study consists of the comparison of different models that compute the contribution of the external reinforcement to the shear capacity of the beams, and of the implementation of a numerical procedure for the shear design of
Publicado em: 2005
-
15. EXPERIMENTAL STUDY ON DUCTILITY OF REINFORCED CONCRETE BEAMS STRENGTHENED IN FLEXURE WITH CARBON FIBER COMPOSITES / ESTUDO EXPERIMENTAL DA DUCTILIDADE DE VIGAS EM CONCRETO ARMADO REFORÇADAS À FLEXÃO UTILIZANDO COMPÓSITOS COM TECIDO DE FIBRAS DE CARBONO
The objective of this experimental work is to study the ductility of reinforced concrete beams strengthened in flexure using externally bonded carbon fiber fabric composites. This study presents the classic concepts of ductility and proposes a new systematic to obtain the ductility index, which is based on the considerations of elastic and inelastic energy.
Publicado em: 2004
-
16. MODELO ANALÍTICO PARA DIMENSIONAMENTO DE REFORÇO À FLEXÃO DE VIGAS EM CONCRETO ARMADO UTILIZANDO COMPÓSITOS DE FIBRAS DE CARBONO / ANALYTICAL MODEL FOR FLEXURAL DESIGN OF REINFORCED CONCRETE BEAMS STRENGTHENED WITH CARBON FIBERS COMPOSITES
O reforço de estruturas de concreto armado torna-se necessário por uma série de fatores, tais como: erros de projeto ou de execução que levam a sistemas estruturais inseguros; deterioração do concreto e do aço causada por envelhecimento natural; agentes agressivos ou acidentes como incêndio e choques; mudança no tipo de utilização original da est
Publicado em: 2004
-
17. Reforço a flexão em vigas de concreto utilizando polimeros reforçados com fibras de carbono
The structural repair and retrofit area has presented great development, since innovative techniques surged, like the use of carbon fibers reinforced composites. This paper will investigate the behavior of flexural strengthened reinforced concrete beams by the use of carbon fiber reinforced plastics (CFRP). Six reinforced concrete beams with identical reinfo
Publicado em: 2002
-
18. Reforço a flexão de vigas de concreto de elevada resistencia por meio da colagem de manta polimerica reforçada com fibras de carbono
The objective of this dissertation is to offer a contribution in the study of the behaviour of high strength reinforced concrete beams with externally bonded carbon fiber reinforced plastic (CFRP) sheets, wich is a technique that has been executed since 1980. Six beams, with concrete strength around 90 :MPa, and with identics geometry and internal reinforcin
Publicado em: 2001