Development of pseudo interface element for modelling of reinforced brick masonry

Shashank Vasudeo Mehendale, Abhay Namdev Bambole, S Raghunath

Abstract


Development of pseudo interface element for modelling of reinforced brick masonry

ABSTRACT

Strength of reinforced masonry is influenced by interfaces between brick, mortar and reinforcement. Experimental protocol has been defined to characterise the behaviour of reinforced brick masonry joint, with reinforcement steel embedded in cement mortar 1:6. This is applicable for low-strength, low-stiffness brick masonry found. Experimental investigations show that bond between masonry and steel is not perfect. Considering critical bond mechanisms, an attempt is made to put-forth a novel approach for development of a pseudo interface element representing three different materials (viz. brick, mortar and reinforcement) and two interfaces (reinforcement-mortar (RM) interface and brick-mortar (BM) interface). Principles of classical Reinforced Concrete (RC) design can therefore be directly applied to reinforced masonry with the introduction of the proposed pseudo interface element.

Keywords: reinforced masonry joint; interface element; masonry reinforcement bond behavior; pseudo interface material; stiffness of interface elements.

 

Desarrollo de un pseudo-elemento de interfaz para el modelado de mampostería de ladrillo reforzado

 RESUMEN

La resistencia de la mampostería reforzada está influenciada por las interfaces entre el ladrillo, el mortero y el refuerzo. Se ha definido un protocolo experimental para caracterizar el comportamiento de la junta de mampostería de ladrillo reforzado, con acero de refuerzo incrustado en mortero de cemento 1: 6. Esto es aplicable para la albañilería con ladrillos de baja resistencia y baja rigidez encontrada. Las investigaciones experimentales demuestran que el vínculo entre la mampostería y el acero no es perfecto. Teniendo en cuenta los mecanismos de enlace críticos, se intenta presentar un nuevo enfoque para el desarrollo de un elemento de pseudo-interfaz que represente tres materiales diferentes (ladrillo, mortero y refuerzo) y dos interfaces (de refuerzo y mortero (RM) y de mortero (BM)). Por lo tanto, los principios del diseño de concreto armado (RC) clásico pueden aplicarse directamente a la mampostería reforzada con la introducción del pseudo-elemento de interfaz propuesto.

Palabras clave: articulación de mampostería reforzada; elemento de interfaz; comportamiento de enlace de refuerzo de mampostería; pseudo-material de interfaz; rigidez de los elementos de la interfaz.

 

Desenvolvimento de um elemento pseudo-interface para modelagem reforçada alvenaria de tijolo

RESUMO

A resistência de alvenaria reforçada é influenciada pelas interfaces entre o tijolo, argamassa e de reforço. Definido um protocolo experimental para caracterizar o comportamento da placa reforçada alvenaria de tijolo com aço de reforço embebido em argamassa de cimento 1: 6. Isso se aplica a alvenaria de tijolo com baixa resistência e baixa rigidez encontrados. A pesquisa experimental mostra que a ligação entre a alvenaria e aço não é perfeito. Dada a mecanismos de ligação crítica, tenta apresentar uma nova abordagem para o desenvolvimento de um elemento de pseudo-relação representando três diferentes materiais (tijolos, argamassa e reforço) e duas interfaces (reforço e argamassa (RM) e argamassa (BM)). Portanto, os princípios de concepção de betão armado (RC) pode ser aplicado directamente sobre a alvenaria reforçada clássico com a introdução do elemento pseudo-interface proposta.

Palavras-chave: alvenaria armada conjunta; elemento de interface; vinculativo de reforço comportamento da alvenaria; material de pseudo-relação; rigidez dos elementos de interface.


Keywords


reinforced masonry joint; interface element; masonry reinforcement bond behavior; pseudo interface material; stiffness of interface elements

References


Arezoo Razavizadeh et al (2014), Bond behavior of SRG-strengthened masonry units: Testing and numerical modeling, Construction and Building Materials 64 (2014) 387–397

Flexural modulus, https://en.wikipedia.org/wiki/Flexural_modulus

Gumaste KS, Venkatarama Reddy BV, Nanjunda Rao KS, Jagadish KS (2004) Properties of burnt bricks and mortars in India. Masonry Int 17(2):45–52

Hendry AW (1998) Structural masonry. Macmillan Press, London

J.R. Van Noort (2012), Computational Modelling of Masonry Structures, Delft University of Technology, Master Thesis

Lenczner D (1972) Elements of load bearing brickwork, Pergamon, Oxford

Matthana MHS (1996) Strength of brick masonry and masonry walls with openings. Ph D thesis, Department of Civil Engineering, Indian Institute of Science, Bangalore, India

Paulo B Lourenço (1996), Computational Strategies for Masonry Structures, PhD Thesis, Faculdade de Engenharia da Universidade do Porto, Portugal

Pluijm, R. Van Der (1992), Material properties of masonry and its components under tension and shear, in: Proc. 6th Canadian Masonry Symposium, eds. V.V. Neis, Saskatoon,Saskatchewan, Canada, p. 675-686

Pluijm, R. Van Der (1993), Shear behavior of bed joints, in: Proc. 6th North American Masonry Conf., eds. A.A. Hamid and H.G. Harris, Drexel University, Philadelphia, Pennsylvania, USA, p. 125-136. (1993)

Raghunath S, Jagadish K S (1998) Strength and elasticity of bricks in India. Workshop on Recent Advances in Masonry Construction: WRAMC-98, Roorkee, India:141–150

Sarangapani G, Venkatarama Reddy BV, Jagadish K S (2005) Brick–mortar bond and masonry compressive strength. J Mater Civil Eng (ASCE) 17(2):229–237

Shashank Mehendale et. al. (2016), Studies on Pull-Out Resistance of Reinforcement in Bed-Joint of Brick Masonry, 10th International Conference on Structural Analysis of Historical Constructions –Anamnesis, diagnosis, therapy, controls – Van Balen & Verstrynge (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-02951-4, page 1093 - 1098

Stiffness, https://en.wikipedia.org/wiki/Stiffness

IS 1786: 2008 HIGH STRENGTH DEFORMED STEEL BARS AND WIRES FOR CONCRETE REINFORCEMENT — SPECIFICATION (Fourth Revision)




DOI: http://dx.doi.org/10.21041/ra.v7i1.147

Refbacks

  • There are currently no refbacks.


 

Reservation of rights for exclusive use No.04-2013-011717330300-203  e-ISSN: 2007-6835. Revista ALCONPAT, Copyright © 2011 - 2017