Strength Performance of Unreinforced Brick Masonry Walls under Flexo-Compression Load. Analytical Methods

Article Preview

Abstract:

The structure of many historical buildings relies on unreinforced masonry load-bearing walls. In the case of large slenderness or significant eccentricity of the vertical compressive loads the mechanism formation failure mode is likely. Considering the second order bending effects and the tensile strength of the masonry is essential to accurately calculate the load-bearing capacity of these structures, which is required for maintenance tasks. An analytical methodology has proposed with this aim. This original method, the Southwell plot method and the formulations from two standard codes (ACI-530 and Eurocode-6) are applied to calculate the resistance of 18 experimentally tested walls to conclude that the proposed methodology brings correct results, the standards are conservative and the Southwell plot method is the most suitable for the analysis of the considered cases but it is not always applicable.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

67-72

Citation:

Online since:

August 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] H. Gallegos, O. Ramírez, Chapter 1: Las estructuras de mampostería, in: Edif. Mampostería Para La Vivienda, 2nd ed., Fundación ICA, A. C, Mexico D.F., 2003: p.1–21.

Google Scholar

[2] Z.P. Bažant, L. Cedolin, Stability of structures: elastic, inelastic, fracture and damage theories, World Scientific, (2010).

DOI: 10.1142/7828

Google Scholar

[3] J. Singer, On the applicability of the Southwell plot to plastic buckling, Exp. Mech. 29 (1989) 205–208.

DOI: 10.1007/bf02321376

Google Scholar

[4] G. Magenes, Comportamento delle strutture murarie sotto carichi verticali. Corso di dottorato sulle Costruzioni in Muratura. (2009).

Google Scholar

[5] P. Haller, Die knickfestigkeit von Mauerwerk aus künstlichen Steinen, Schweizerische Bauzeitung. 67 (1949).

Google Scholar

[6] J.G. Gross, R.D. Dikkers, J.C. Grogen, Recommended practice for engineered brick masonry, Mc Lenon, (1969).

Google Scholar

[7] K. Kirtschig, W. Asntötz, Buckling tests on masonry, in: Proc. 9th Int. Brick/Block Mason. Conf., IBMAC, Berlin, 1991: p.202–209.

Google Scholar

[8] F.Y. Yokel, Strength of load bearing masonry walls, J. Struct. Div. 97 (1971) 1593–1609.

DOI: 10.1061/jsdeag.0002911

Google Scholar

[9] F.Y. Yokel, Stability and load capacity of members with no tensile strength, J. Struct. Div. 97 (1971) 1913–(1926).

DOI: 10.1061/jsdeag.0002954

Google Scholar

[10] F. Romano, S. Ganduscio, G. Zingone, Cracked nonlinear masonry stability under vertical and lateral loads, J. Struct. Eng. 119 (1993) 69–87.

DOI: 10.1061/(asce)0733-9445(1993)119:1(69)

Google Scholar

[11] A. De Falco, M. Lucchesi, Stability of columns with no tension strength and bounded compressive strength and deformability. Part I: large eccentricity, Int. J. Solids Struct. 39 (2002) 6191–6210.

DOI: 10.1016/s0020-7683(02)00467-5

Google Scholar

[12] A. Defalco, M. Lucchesi, No tension beam-columns with bounded compressive strength and deformability undergoing eccentric vertical loads, Int. J. Mech. Sci. 49 (2007) 54–74.

DOI: 10.1016/j.ijmecsci.2006.08.002

Google Scholar

[13] I. Mura, Stability of nonlinear masonry members under combined load, Comput. Struct. 86 (2008) 1579–1593.

DOI: 10.1016/j.compstruc.2008.01.003

Google Scholar

[14] M. Lu, A. Schultz, H. Stolarski, Analysis of the Influence of Tensile Strength on the Stability of Eccentrically Compressed Slender Unreinforced Masonry Walls Under Lateral Loads, J. Struct. Eng. 130 (2004) 921.

DOI: 10.1061/(asce)0733-9445(2004)130:6(921)

Google Scholar

[15] D. Foti. Shape Optimization of Rectified Brick Blocks for the Improvement of the out-of-Plane Behavior of Masonry. International Journal of Mechanics, vol. 7, Issue 4, (2013), 417-424.

Google Scholar

[16] E. Bernat, L. Gil, P. Roca, C. Sandoval, Experimental and numerical analysis of bending–buckling mixed failure of brickwork walls, Constr. Build. Mater. 43 (2013) 1–13.

DOI: 10.1016/j.conbuildmat.2013.01.025

Google Scholar