REDISTRIBUIÇÃO DE MOMENTOS EM VIGAS CONTÍNUAS EM ADUELAS PROTENDIDAS COM CABOS SINTÉTICOS EXTERNOS / MOMENT REDISTRIBUTION IN CONTINUOUS SEGMENTAL BEAMS PRESTRESSED WITH EXTERNAL SYNTHETIC TENDONS
AUTOR(ES)
AELLINGTON FREIRE DE ARAUJO
DATA DE PUBLICAÇÃO
2003
RESUMO
An experimental investigation on the behavior of continuous segmental concrete beams, prestressed with external aramid tendons, was carried out. Four beams were tested; one was monolithic and the others were constructed in precast dry- jointed segments. All the beams had the same overall dimensions, with two spans and an I section 30 cm high, flange width of 30 cm and web thickness of 10 cm. The 1/dp span/section height) ratio was 18,75 for the monolithic beam and 12.5, 18.75 and 25 for the segmental beams. The beams were post-tensioned with two external aramid tendons, which are made of high strength (2700 MPa) high modulus (126000 MPa)Kevlar 49 yarns. The main objective was to study the moment redistribution in the post-cracking stage. Test results have shown that the moment redistribution in segmental beams can be obtained from a similar monolithic beam and that the moment redistribution is only slightly affected by the 1/dp.
ASSUNTO(S)
concreto protendido moment redistribution cabo externo redistribuicao de momentos external tendon precast segment aduela pre-moldada synthetic tendon cabo sintetico prestressed concrete
ACESSO AO ARTIGO
Documentos Relacionados
- ANÁLISE DO COMPORTAMENTO À FLEXÃO DE VIGAS PROTENDIDAS COM CABOS EXTERNOS SINTÉTICOS
- ESTUDIO EXPERIMENTAL DE LA RESISTENCIA A LA FLEXIÓN EN VIGAS PROTENDIDAS CON CABLES SINTÉTICOS EXTERNOS
- INFLUENCE OF THE CONCRETE STRENGTH ON THE BEHAVIOR OF PRESTRESSED BEAMS WITH EXTERNAL ARAMID TENDONS
- Análise da redistribuição de esforços em vigas de concreto protendido com seções compostas.
- OPTIMUM DESIGN OF CABLES IN PRESTRESSED CONCRETE BEAMS