DOI QR코드

DOI QR Code

Using element-embedded rebar model in ANSYS for the study of reinforced and prestressed concrete structures

  • Lazzari, Bruna M. (Civil Engineering Graduate Program, Federal University of Rio Grande do Sul) ;
  • Filho, Americo Campos (Civil Engineering Graduate Program, Federal University of Rio Grande do Sul) ;
  • Lazzari, Paula M. (Civil Engineering Graduate Program, Federal University of Rio Grande do Sul) ;
  • Pacheco, Alexandre R. (Civil Engineering Graduate Program, Federal University of Rio Grande do Sul)
  • 투고 : 2016.07.22
  • 심사 : 2017.01.04
  • 발행 : 2017.04.25

초록

ANSYS is a software well accepted by professionals and academics, since it provides a variety of finite elements, material constitutive models, and linear and nonlinear analysis of structures in general. For the concrete material, for instance, the software uses an elastoplastic model with the Willam-Warnke surface of rupture (1975). However, this model is only available for finite elements that do not offer the possibility of use of the element-embedded model for rebars, demanding a much larger amount of elements to discretize structures, making numerical solutions less efficient. This study is, therefore, about the development of a computational model using the Finite Element Method via ANSYS platform for nonlinear analysis of reinforced and prestressed concrete beams under plane stress states. The most significant advantage of this implementation is the possibility of using the element-embedded rebar model in ANSYS with its 2D eight-node quadratic element PLANE183 for discretization of the concrete together with element REINF263 for discretization of rebars, stirrups, and cables, making the solutions faster and more efficient. For representation of the constitutive equations of the steel and the concrete, a proposed model was implemented with the help of the UPF customization tool (User Programmable Features) of ANSYS, where new subroutines written in FORTRAN were attached to the main program. The numerical results are compared with experimental values available in the technical literature to validate the proposed model, with satisfactory results being found.

키워드

과제정보

연구 과제 주관 기관 : Federal University of Rio Grande do Sul-UFRGS

참고문헌

  1. Amiri, G.G., Jahromi, A.J. and Mohebi, B. (2011), "Determination of plastic hinge properties for static nonlinear analysis of FRPstrengthened circular columns in bridges", Comput. Concrete, 10(5), 435-455. https://doi.org/10.12989/cac.2012.10.5.435
  2. Anil, O. and Uyaroglu, B. (2012), "Nonlinear finite element analysis of loading transferred from column to socket base", Comput. Concrete, 11(5), 475-492. https://doi.org/10.12989/cac.2013.11.5.475
  3. Bulut, N., Anil, O. and Belgin, C.M. (2011), "Nonlinear finite element analysis of RC beams strengthened with CFRP strip against shear", Comput. Concrete, 8(6), 717-733. https://doi.org/10.12989/cac.2011.8.6.717
  4. Comite Euro-International du Beton (2012), CEB-FIP Model Code 2010, Bulletin N. 65.
  5. Demir, S. and Husem, M. (2015), "Investigation of bond-slip modeling methods used in FE analyis of RC members", Struct. Eng. Mech., 56(2), 275-291. https://doi.org/10.12989/sem.2015.56.2.275
  6. Gongchen, D. and Xuekang, T. (1988), "Contrainte ultime dans cables non-adherents de poutres en beton a precontrainte partielle", Annales de L'Institut Tecnhique du Batiment et des Tavaux Publics, 462, 75-88.
  7. Hinton, E. (1988), Numerical Methods and Software for Dynamic Analysis of Plates and Shells, Pineridge Press Limited, Swansea, Wales, U.K.
  8. Kazaz, I. (2010), "Finite element analysis of shear-critical reinforced concrete walls", Comput. Concrete, 8(3), 143-162.
  9. Kunzler, P.S. (2013), "Parametric analysis using the finite element method of reinforced concrete beams and presstressed concrete beams with openings", M.S. Dissertation, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
  10. Lazzari, B.M. (2015), "Finite element analysis of reinforced and prestressed concrete elements under plane stress states", M.S. Dissertation, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
  11. Leonhardt, F. and Walther, R. (1962), "Beitrage zur behandlung der schubprobleme im stahlbetonbau", Beton und Stahlbetonbau, 57(7), 161-173.
  12. Ottosen, N.S. (1977), "A failure criterion for concrete", J. Eng. Mech. Div., 103(4), 527-535.
  13. Vasudevan, G. and Kothandaraman, S. (2015), "RC beams retrofitted using external bars with additional anchorages-a finite element study", Comput. Concrete, 16(3), 415-428. https://doi.org/10.12989/cac.2015.16.3.415
  14. Willam, K.J. and Warnke, E.P. (1975), "Constitutive models for the triaxial behavior of concrete", Proceedings of the International Association of Bridge Structures, 19, 1-30.

피인용 문헌

  1. Structural analysis of a prestressed segmented girder using contact elements in ANSYS vol.20, pp.3, 2017, https://doi.org/10.12989/cac.2017.20.3.319
  2. Numerical simulation of the constructive steps of a cable-stayed bridge using ANSYS vol.69, pp.3, 2017, https://doi.org/10.12989/sem.2019.69.3.269
  3. Modeling Strategies of Finite Element Simulation of Reinforced Concrete Beams Strengthened with FRP: A Review vol.5, pp.1, 2021, https://doi.org/10.3390/jcs5010019
  4. Numerically Efficient Three-Dimensional Model for Non-Linear Finite Element Analysis of Reinforced Concrete Structures vol.14, pp.7, 2017, https://doi.org/10.3390/ma14071578