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Mesoscale computational simulation of the mechanical response of reinforced concrete members

  • Wang, Licheng (State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research) ;
  • Bao, Jiuwen (State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology)
  • Received : 2013.11.04
  • Accepted : 2014.11.03
  • Published : 2015.02.25

Abstract

On mesoscopic level, concrete can be treated as a three-phase composite material consisting of mortar, aggregates and interfacial transition zone (ITZ) between mortar and aggregate. A lot of research has confirmed that ITZ plays a crucial role in the mechanical fracture process of concrete. The aim of the present study is to propose a numerical method on mesoscale to analyze the failure mechanism of reinforced concrete (RC) structures under mechanical loading, and then it will help precisely predict the damage or the cracking initiation and propagation of concrete. Concrete is meshed by means of the Rigid Body Spring Model (RBSM) concept, while the reinforcing steel bars are modeled as beam-type elements. Two kinds of RC members, i.e. subjected to uniaxial tension and beams under bending, the fracture process of concrete and the distribution of cracks, as well as the load-deflection relationships are investigated and compared with the available test results. It is found that the numerical results are in good agreement with the experimental observations, indicating that the model can successfully simulate the failure process of the RC members.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation

References

  1. Bolander, J.E. and Saito, S. (1998), "Fracture analyses using spring networks with random geometry", Eng. Fract. Mech., 61(5-6), 569-591. https://doi.org/10.1016/S0013-7944(98)00069-1
  2. Bolander, J.E. and Le, B.D. (1999), "Modeling crack development in reinforced concrete structures under service loading", Constr. Build. Mater., 13(1-2), 23-31. https://doi.org/10.1016/S0950-0618(99)00005-7
  3. Bolander, J.E., Hong, G.S. and Yoshitake, K. (2000), "Structural concrete analysis using rigid-body-spring networks", Computer-aided Civ. Infrastruct. Eng., 15(2), 120-133. https://doi.org/10.1111/0885-9507.00177
  4. Bolander, J.E. and Hong, G.S. (2002), "Rigid-body-spring network modeling of prestressed concrete members", ACI Struct. J., 99(15), 595-604.
  5. Care, S. and Herve, E. (2004), "Application of an n-phase model of the diffusion coefficient of chloride in mortar", Transport Porous Med., 56(2), 119-135. https://doi.org/10.1023/B:TIPM.0000021730.34756.40
  6. Cusatis, G., Bazant, Z.P. and Cedolin, L. (2003), "Confinement-shear lattice model for concrete damage in tension and compression: I. theory", J. Eng. Mech., 129(12), 1439-1448. https://doi.org/10.1061/(ASCE)0733-9399(2003)129:12(1439)
  7. Grassl, P. and Jirasek, M. (2010), "Meso-scale approach to modelling the fracture process zone of concrete subjected to uniaxial tension", Int. J. Solid. Struct., 47(7-8), 957-968. https://doi.org/10.1016/j.ijsolstr.2009.12.010
  8. Grassl, P. and Rempling, R. (2008), "A damage-plasticity interface approach to the mesoscale modelling of concrete subjected to cyclic compressive loading", Eng. Fract. Mech., 75(16), 4804-4818,. https://doi.org/10.1016/j.engfracmech.2008.06.005
  9. Guinea, G.V., El-Sayed, K., Rocco, C.G., Elices, M. and Planas, J. (2002), "The effect of the bond between the matrix and the aggregates on the cracking mechanism and fracture parameters of concrete", Cement Concrete Res., 32(12), 1961-1970. https://doi.org/10.1016/S0008-8846(02)00902-X
  10. Jirasek, M. and Grassl, P. (2008), "Evaluation of directional mesh bias in concrete fracture simulations using continuum damage models", Eng. Fract. Mech., 75(8), 1921-1943. https://doi.org/10.1016/j.engfracmech.2007.11.010
  11. Kim, S.M. and Abu Al-Rub, R.K. (2011), "Meso-scale computational modeling of the plastic-damage response of cementitious composites", Cement Concrete Res., 41(3), 339-358. https://doi.org/10.1016/j.cemconres.2010.12.002
  12. Nagai, K., Sato, Y. and Ueda, T. (2004), "Mesoscopic simulation of failure of mortar and concrete by 2D RBSM", J. Adv. Concrete Tech., 2(3), 359-374. https://doi.org/10.3151/jact.2.359
  13. Nakamura, H., Srisoros, W., Yashiro, R. and Kunieda, M. (2006), "Time-dependent structural analysis considering mass transfer to evaluate deterioration process of RC structures", J. Adv. Concrete Tech., 4(1), 147-158. https://doi.org/10.3151/jact.4.147
  14. Oh, B.H. and Jang, S.Y. (2004), "Prediction of diffusivity of concrete based on simple analytic equations", Cement Concrete Res., 34(3), 463-480. https://doi.org/10.1016/j.cemconres.2003.08.026
  15. Revathi, P. and Menon, D. (2005), "Nonlinear finite element analysis of reinforced concrete beams", J. Struct. Eng., 32(2), 135-137.
  16. Sadouki, H. and Van Mier, J.G.M. (1997), "Meso-level analysis of moisture flow in cement composites using a lattice-type approach", Mater. Struct., 30(10), 579-587. https://doi.org/10.1007/BF02486899
  17. Shima, H., Chou, L. and Okamura, H. (1987), "Bond-slip-strain relationship of deformed bars embedded in massive concrete", Concrete Library, JSCE, (10), 79-94.
  18. Wang, L.C. and Ueda, T. (2011). "Mesoscale modeling of water penetration into concrete by capillary absorption", Ocean Eng., 38(4), 519-528. https://doi.org/10.1016/j.oceaneng.2010.12.019
  19. Wang, Z.L., Lin, F. and Gu, X.L. (2008), "Numerical simulation of failure process of concrete under compression based on meso-scale discrete element model", Tsinghua Sci. Tech., 13(S1), 19-25. https://doi.org/10.1016/S1007-0214(08)70121-4
  20. Walravent, J.C. and Reinhard, H.W. (1981), "Concrete mechanic. part A: theory and experiments on the mechanical behavior of cracks in plain and reinforced concrete subject to shear loading", Heron, 26(1A), 1-68.
  21. Zhou, X.Q. and Hao, H. (2008), "Mesoscale modelling of concrete tensile failure mechanism at high strain rates", Comput. Struct., 86(21-22), 2013-2026. https://doi.org/10.1016/j.compstruc.2008.04.013

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