Parametric Study on Confined Masonry Walls Subjected to In-plane Cyclic Loading Through Numerical Modeling

Document Type : Research Article


Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iran


Results of numerical study on confined masonry walls are described in this paper, which presents a discussion on the behavior of confined masonry walls with different aspect and reinforcement ratio subjected to the in-plane horizontal loads, using advanced numerical simulations in LS-DYNA environment. A non-linear finite element micro-model based on smeared crack and total strain-stress models is used to examine existing tested masonry walls. The masonry units include solid clay bricks and concrete blocks, the mortar and bonding interfaces between the units and mortar have been lumped in continuum elements. In order to validate micro-modeling strategy the input data is based on a combined confined wall which was previously tested in the literature with a clearly identification and justification. The numerical results are presented as force-displacement curves, types of failure modes, ductility and energy absorption. It was observed that the confined walls with an aspect ratio of (h/l=1) shows better performance in terms of resisting mechanism, deformability and energy absorption.


[1] R. Meli, Structural Design Of Masonry Building, ACI special publication 147 masonry in the America, American concrete institute, (1994) 239-262.
[2] Klinger. R., Behavior of Masonry in the Northridge (Us) And Tecoman – Colima (Mexico) Earthquakes: Lessons Learned, And Changes in Us Design Provisions, Construction building material, 20(4) (2006) 209-219.
[3] N.J. Shing PB, Klamerus E, Spaeh H, Inelastic Behavior Of Concrete Masonry Shear Walls, Journal of structural engineering, 115(9) (1989) 2204-2225.
[4] T.e. M., Earthquake-Resistant Design of Masonry Buildings., Innovations in structures and construction. London: Imperial College Press, (1999).
[5] J.G.R.a.J.B.J. P. B. Lourenco, Continuum Model for Masonry: Parameter Estimation and Validation. Journal of structural engineering, 124(6) (1998) 642-652.
[6] P.B.Lourenco, V. G. Haach, Parametric Study of Masonry Walls Subjected to In-Plane Loading through Numerical Modeling, Engineering Structure, 3(4) (2011) 1377-1389.
[7] M.M.A. K. Chaimoon, Modeling of Confined Masonry Walls under Shear and Compression. Engineering Structure, 29(3) (2007) 2056-2068.
[8] J.A.A.a.H.S.V. T. C. Arturo, Cyclic Behavior of Combined and Confined Masonry Walls, Engineering Structure, 31(240-59) (2009).
[9] L.P. Zucchini A, Validation of a Micro-Mechanical Homogenisation Model: Application to Shear Walls, International journal Solids Structure, 46(3-4) (2009) 871-886.
[10] J.O.a.B. Halquist, D.J., Ls – Dyna User’s Manual (“Nonlinear Dynamic Analysis Of Solids In Three Dimension “, 3 ed., University of California, Lawrence, Livermore National laboratory, rept, UCID- 19156 1987.
[11] P.B.L. V. G. Haach, Parametric Study of Masonry Walls Subjected to In-Plane Loading through Numerical Modeling, Engineering Structure, 3(4) (2011) 1377-1389.
[12] A.B. J. M. Adam, T. G. Hughes and T. Jefferson, Micromodelling of Eccentrically Loaded Brickwork: Study of Masonry Wallettes, Engineering Structure, 32(5) (2010) 1244-1251.
[13] G. Mohamad, Mechanism Failure of Concrete Block Confined Masonry under Compression, University of Minho, Guimaraes, Portugal, 2007.
[14] V.G. Haach, Development Of A Design Method For Confined Masonry Subjected To In-Plane Loading Based On Experimental And Numerical Analysis, University of Minho, Guimaraes, Portugal, Portugal, 2009.
[15] R.J. Lourenco PB, Multisurface Interface Model for Analysis of Masonry Structures, Engineering Mechanic, 123(7) (1997) 660-668.
[16] L.P. Milani G, Tralli A, Homogenised Limit Analysis Of Masonry Walls. Part I: Failure Surfaces, Computer Structure, 84(3-4) (2006) 166-180.
[17] G.V. Zijl, Modeling Masonry Shear–Compression: Role of Dilatancy Highlighted, Engineering Mechanic, 30(11) (2004) 1289-1296.
[18] S. Bala, Tie-Break Contacts in Ls-Dyna. , USA, 2007.
[19] L. PB, Computational Strategies for Masonry Structures, Delft University of Technology, 1996.
[20] T. Bakeer, Collapse Analysis Of Masonry Structures Under Earthquake Actions, Dresden University of Technology, Publication Series of the Chair of Structural Design, Germany, 2009.
[21] L. PB, Computational Strategies for Reinforced Masonry Structures, Delft University of Technology, 1996.
[22] M.J.N.Priestly. a.M.J. Kowalsky, Direct Displacement-Based Design of Concrete Buildings, Bulletin of the New Zealand National Society for Earthquake Engineering, 33(4) (2005) 421-444.