Modeling reinforced concrete structures using coupling finite elements for discrete representation of reinforcements

Autor(es)

Bitencourt, Jr., Luis A. G. ^[1] ; Manzoli, Osvaldo L. ^[2] ; Trindade, Yasmin T. ^[1] ; Rodrigues, Eduardo A. ^[2] ; Dias-da-Costa, Daniel ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Av Prof Luciano Gualberto, Trav 3 380, BR-05508010 Sao Paulo, SP - Brazil

^[2] Sao Paulo State Univ, UNESP Bauru, Av Engn Luiz Edmundo C Coube 14-01, BR-17033360 Bauru, SP - Brazil

^[3] Univ Sydney, Sch Civil Engn, Fac Engn & Informat Technol, J05 Civil Engn Bldg, Sydney, NSW 2006 - Australia

• Tipo de documento: Artigo Científico
• Fonte: FINITE ELEMENTS IN ANALYSIS AND DESIGN; v. 149, p. 32-44, SEP 15 2018.
• Citações Web of Science: 2

Resumo

This paper presents an alternative methodology to represent rebars and their bond-slip behavior against concrete based on coupling finite elements. Among the main features and advantages of the proposed technique are: (i) the coupling between the two independent meshes for concrete and reinforcement does not introduce any additional degree of freedom in the global problem; (ii) both rigid and non-rigid coupling can be used to represent the particular cases of perfect adherence and general bond-slip behavior, respectively; (iii) rebars of arbitrary geometry and orientation can be modeled; (iv) the methodology can be applied to 2D and 3D problems and (v) the formulation can be adapted to other type of finite elements and implemented easily in any existing FEM code. Constitutive models based on continuum damage mechanics are used to represent the concrete behavior and concrete-rebar interaction. A number of numerical analyses are performed and the results obtained show the versatility and accuracy of the proposed methodology. (AU)

• Processo FAPESP: 12/05430-0 - Modelagem computacional de materiais frágeis reforçados com fibras
• Beneficiário: Luís Antônio Guimarães Bitencourt Júnior
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 09/07451-2 - Modelagem do processo de falha em materiais cimentícios reforçados com fibras
• Beneficiário: Luís Antônio Guimarães Bitencourt Júnior
• Modalidade de apoio: Bolsas no Brasil - Doutorado