Avaliação da resistência de consolos de concreto moldados em duas etapas com a utilização de protensão não aderente

Resumo

One of the key advantages of precast concrete structures is the speed of construction. This advantage can be further evidenced if elements like columns with corbels could be produced in an even more agile way. This paper presents the results of an experimental research on short precast concrete corbels. Corbels are precast separately of the column and then joined to it by means of socked and unbonded post-tensioning. For this, three models composed by a column and two symmetric corbels, all of them precast, were produced, being their failure defined by splitting of concrete in corbels. Results also demonstrated that the proposed typology of corbel presented strength merely 5% lower than the reference monolithic corbel. In the other hand, the proposed typology of corbel provided strength significantly greater than that found for corbel cast in two steps without prestressing.

Descrição

Palavras-chave

Consolos, Protensão não-aderente, Fendilhamento, Pré-moldado, Corbels, Unbonded post-tensioning, Splitting, Precast concrete

Citação

CHAGAS, Luiz Guilherme Mendonça; NOGUEIRA, Izadora Ferreira; OLIVEIRA JÚNIOR, Luiz Álvaro de; ARAÚJO, Daniel de Lima. Avaliação da resistência de consolos de concreto moldados em duas etapas com a utilização de protensão não aderente. Revista Eletrônica de Engenharia Civil, Goiânia, v. 15, n. 1, p. 99-111, jan./jun. 2019. Disponível em: <https://www.revistas.ufg.br/reec/article/view/48809/pdf>.