Experimental study of a splicing system with a grout-filled steel tube and reinforced bar / Estudo experimental de uma emenda de barra para concreto armado com tubo de aço e graute

AUTOR(ES)

Karenina Carolina da Silva

DATA DE PUBLICAÇÃO

2008

RESUMO

The main purpose of this research was to analyze experimentally the behavior of a splicing system with a grout-filled steel tube and reinforced bar to transmit the efforts efficiently. A splice was prepared with a grout-filled steel tube and two reinforced bars, one in each end of the tube with the same anchorage length. The splices were loaded in monotonic and ciclic axial tension until failure, with displacements control, measuring the maximum load and observing the splicing failure mode. An experimental program was carried out and adopted as variables the bar diameter, the tube diameter, the type of internal surface of the tube, the loading, coverage, lenght anchorage and the bar position. The failure of the splice occurred by yielding bar failure, grout splitting and grout slipping, according to the bar diameter and the internal surface of the tube. It was verified that this type of splice guarantees a good efforts transmission. The ribs inside the tube had significant influence, while the failure occurred by the grout slipping without the tube ribbed; the bar position had not significant influence.

ASSUNTO(S)

aderência grouted joints ensaios tests emenda splice bond ligação grauteada

Documentos Relacionados

• Theoretical and experimental study of high strength concrete filled steel tubes
• Estudo de aço microligado ao vanádio para a produção de barra nervurada para concreto armado com característica de soldabilidade segundo norma ABNT NBR 8965:1985
• Estudo da aderência aço-concreto em pilares mistos preenchidos
• Experimental evaluation wood-to-concrete and wood composite members joints using steel-bar and concrete connectors
• Study of bond behavior between reinforced bar and concrete with epoxi resin.