SciELO - Scientific Electronic Library Online

 
vol.24 número2Avaliação do grau de orientação de fibras de aço induzida na moldagem de elementos planos com concreto autoadensávelGestão da água em usina de concreto: análise do emprego de Moringa oleifera no tratamento de água residuária e proposta de reusoapós tratamento índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Matéria (Rio de Janeiro)

versão On-line ISSN 1517-7076

Resumo

ALMEIDA FILHO, Fernando Menezes de; NARDIN, Silvana De  e  DEBS, Ana Lúcia Homce de Cresce El. Numerical approach of the steel-concrete bond behavior using pull-out models. Matéria (Rio J.) [online]. 2019, vol.24, n.2, e12341.  Epub 10-Jun-2019. ISSN 1517-7076.  https://doi.org/10.1590/s1517-707620190002.0656.

This paper deals with the analysis of monotonic loading behavior in pull-out tests. The main objective is to obtain a reliable numerical model to represent the steel-concrete bond behavior using previously obtained experimental results. The tests were performed in RILEM pull-out specimen using 10 mm steel bar and concrete with compressive strength of 30 MPa. The numerical study used Ansys® software, based on FEM (Finite Elements Method). The numerical simulation adopted non-linear constitutive relationships to represent the behavior of both concrete and steel. A contact surface composed of special finite elements modeled the interface between the concrete and the steel bar, allowing a steel–concrete slip. The numerical analysis performed with variation of the main parameters of the software permitted determining the best ones, and choosing them to obtain a good representation of the bond phenomena. The numerical results had a good agreement with the experimental results. Both linear and non-linear approaches represented the pre-peak behavior, however only the non-linear model gave the best approach for the pull-out force. In addition, the numerical results had shown the simplified model can be used to represent the steel-concrete bond behavior reducing the processing time for current structures analysis.

Palavras-chave : bond strength; pull-out tests; numerical approach; contact surface; finite element method.

        · texto em Inglês     · Inglês ( pdf )