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3 results on '"Partially-grouted walls"'

1. In-plane shear strength and damage fragility functions for partially-grouted reinforced masonry walls with bond-beam reinforcement

Author

Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. ATEM - Anàlisi i Tecnologia d'Estructures i Materials, Zhang, Zhiming, Murcia Delso, Juan, Sandoval Mandujano, Cristian Eliseo, Araya-Letelier, Gerardo, Wang, Fenglai, Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. ATEM - Anàlisi i Tecnologia d'Estructures i Materials, Zhang, Zhiming, Murcia Delso, Juan, Sandoval Mandujano, Cristian Eliseo, Araya-Letelier, Gerardo, and Wang, Fenglai

Abstract

This paper presents a study on the in-plane shear response of partially-grouted reinforced masonry walls with bond-beam reinforcement. A database of 95 tests on partially-grouted walls made of concrete hollow blocks was compiled from experimental studies reported in the literature to characterize the capacity and damageability of walls subjected to in-plane lateral loading. The database has been used to evaluate the accuracy of existing design shear strength equations for partially-grouted walls. It is concluded that the shear strength expressions in the Masonry Standards Joint Committee (MSJC) code and Canadian standard are unconservative for partially-grouted walls. A modified equation based on the MSJC expression is proposed which better estimates the shear strength of this type of walls. Seismic fragility functions are also derived based on the experimental database to calculate the probability of experiencing moderate and severe damage in a partially-grouted wall for a given story-drift ratio deformation or normalized shear force demand. The resulting fragility functions show that the normalized shear demand is better correlated with the level of damage than the story-drift ratio., The first author Z. Zhang gratefully acknowledges the financial support provided by a Harbin Institute of Technology scholarship to conduct research as a visiting scholar at the University of Texas at Austin under the supervision of the second author J. Murcia-Delso. The co-authors C. Sandoval and G. Araya-Letelier are grateful for the funding provided by the Fondo de Fomento al Desarrollo Científico y Tecnológico (FONDEF) under Grant N° 17I10264 and the Fondo Nacional de Ciencia y Tecnología de Chile (FONDECYT Regular) through Grant No. 1181598., Peer Reviewed, Postprint (published version)

Published
2021

2. In-plane shear strength and damage fragility functions for partially-grouted reinforced masonry walls with bond-beam reinforcement

Author

Zhiming Zhang, Fenglai Wang, Gerardo Araya-Letelier, Cristián Sandoval, Juan Murcia-Delso, Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, and Universitat Politècnica de Catalunya. ATEM - Anàlisi i Tecnologia d'Estructures i Materials

Subjects
Materials science, business.industry, Shear force, Fragility functions, Enginyeria civil::Materials i estructures [Àrees temàtiques de la UPC], Structural engineering, Masonry, Shear (sheet metal), Bond beam, Retaining walls--Design and construction, In-plane shear strength, Fragility, Shear strength, Seismic performance, Murs de contenció -- Disseny i construcció, Deformation (engineering), business, Joint (geology), Reinforced masonry, Civil and Structural Engineering, Partially-grouted walls
Abstract

This paper presents a study on the in-plane shear response of partially-grouted reinforced masonry walls with bond-beam reinforcement. A database of 95 tests on partially-grouted walls made of concrete hollow blocks was compiled from experimental studies reported in the literature to characterize the capacity and damageability of walls subjected to in-plane lateral loading. The database has been used to evaluate the accuracy of existing design shear strength equations for partially-grouted walls. It is concluded that the shear strength expressions in the Masonry Standards Joint Committee (MSJC) code and Canadian standard are unconservative for partially-grouted walls. A modified equation based on the MSJC expression is proposed which better estimates the shear strength of this type of walls. Seismic fragility functions are also derived based on the experimental database to calculate the probability of experiencing moderate and severe damage in a partially-grouted wall for a given story-drift ratio deformation or normalized shear force demand. The resulting fragility functions show that the normalized shear demand is better correlated with the level of damage than the story-drift ratio. The first author Z. Zhang gratefully acknowledges the financial support provided by a Harbin Institute of Technology scholarship to conduct research as a visiting scholar at the University of Texas at Austin under the supervision of the second author J. Murcia-Delso. The co-authors C. Sandoval and G. Araya-Letelier are grateful for the funding provided by the Fondo de Fomento al Desarrollo Científico y Tecnológico (FONDEF) under Grant N° 17I10264 and the Fondo Nacional de Ciencia y Tecnología de Chile (FONDECYT Regular) through Grant No. 1181598.

Published
2021

3. In-plane shear strength and damage fragility functions for partially-grouted reinforced masonry walls with bond-beam reinforcement.

Author

Zhang, Zhiming, Murcia-Delso, Juan, Sandoval, Cristián, Araya-Letelier, Gerardo, and Wang, Fenglai

Subjects
*REINFORCED masonry, *ARCH bridges, *BALLAST (Railroads), *SHEAR (Mechanics), *LATERAL loads, *CONCRETE blocks, *SHEARING force, *SHEAR strength
Abstract

• MSJC and Canadian codes provide unsafe shear strength predictions for PG-RM walls. • A modified MSJC equation is proposed to improve shear strength predictions. • A normalized shear demand parameter is a better damage indicator than story-drift ratio. • Bond-beam PG-RM walls present lower deformation capacity than bed-joint PG-RM walls. This paper presents a study on the in-plane shear response of partially-grouted reinforced masonry walls with bond-beam reinforcement. A database of 95 tests on partially-grouted walls made of concrete hollow blocks was compiled from experimental studies reported in the literature to characterize the capacity and damageability of walls subjected to in-plane lateral loading. The database has been used to evaluate the accuracy of existing design shear strength equations for partially-grouted walls. It is concluded that the shear strength expressions in the Masonry Standards Joint Committee (MSJC) code and Canadian standard are unconservative for partially-grouted walls. A modified equation based on the MSJC expression is proposed which better estimates the shear strength of this type of walls. Seismic fragility functions are also derived based on the experimental database to calculate the probability of experiencing moderate and severe damage in a partially-grouted wall for a given story-drift ratio deformation or normalized shear force demand. The resulting fragility functions show that the normalized shear demand is better correlated with the level of damage than the story-drift ratio. [ABSTRACT FROM AUTHOR]

Published
2021
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