Performance Evaluation of a Reinforced Masonry Model and an Unreinforced Masonry Model Using a Shake Table Testing Facility

Chellappa, Shermi; Dubey, R. N.

doi:10.1061/(asce)cf.1943-5509.0001119

Cited by 15 publications

(2 citation statements)

References 12 publications

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“…Masonry is used as a construction material since ages especially in rural areas and many historical buildings are also constructed using masonry. Masonry structures shows poor performance during past earthquakes because of faulty construction practices and inadequate retrofitting measures [1,2]. Some of the reason for failure of masonry structures are improper connections between walls and roofs, poor construction material, absence of bands and absence of any strengthening techniques.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Effects of Opening on the Strength of Masonry Wall

Shelton¹,

Basha²,

Solomon³

et al. 2023

AMM

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Masonry is used as a construction material since old age. It is a cheaper construction material compared to R.C.C. and also requires comparatively less construction skills. During an earthquake, the masonry wall constructed following the codal provisions shows preliminary behaviour in the in-plane direction of wall and it has lesser deformation in the out-of-plane direction of the wall. Although, the strength and stiffness of the Un-Reinforced Masonry (URM) walls were reduce due to sizes and positions of openings, the relationship between the seismic capacity of the walls and the position and size of opening in walls are not clear. Researchers in the past mostly explored the in-plane behaviour of solid masonry wall without opening. Considering the openings in these walls can significantly affect the strength of the masonry wall. Hence, in the present study, an attempt is made to understand the effect of varying opening sizes (4 different combinations of door and/or window openings) in unreinforced masonry wall using finite element software CATIA. From this software, URM walls were modeled and load based quasi-static analysis were done in in-plane direction. The collapse mechanisms of the masonry walls and crack patterns are studied from the analysis and a key output from this work is the characterization of the relationships between the sizes and positions of openings and the in-plane performance of masonry walls.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Effects of Opening on the Strength of Masonry Wall

Shelton¹,

Basha²,

Solomon³

et al. 2023

AMM

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show abstract

“…Currently, most studies on masonry structures focus on quasistatic tests of their structural members or shaking-table tests and numerical simulation analyses that mostly consider single earthquake shaking [28][29][30]. As stated above, there is a relative lack of research on the fragility of masonry structures and their susceptibility to aftershocks, leaving room for improvement in the seismic design and seismic risk assessment methods of masonry structures.…”

Section: Introductionmentioning

confidence: 99%

Effect of Aftershocks on Seismic Fragilities of Single-Story Masonry Structures

et al. 2021

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The effect of aftershocks on the fragility of single-story masonry structures is investigated using probabilistic seismic demand analysis Finite element models of an unreinforced masonry (URM) structure and a confined masonry (CM) structure are established and their seismic response characteristics when subjected to mainshock, aftershock, and the mainshock-aftershock sequence are then comparatively investigated. The effects of aftershocks and the use of confining members on the seismic response are studied. Probabilistic seismic demand models of the structures are built, and fragility curves under various conditions are derived to investigate the effect of aftershocks on structural fragility. The maximum roof displacement and maximum inter-story drift ratio are lower in the confined masonry model than in the unreinforced masonry model; additionally, the probability of exceedance (PE) values of each damage limit state reduced, and those of the mainshock-damaged models subjected to aftershock significantly increase compared to those directly subjected to a same-intensity aftershock. The probability of severe damage or collapse compared with the mainshock-damaged CM model is greater than when each is subjected to a same intensity aftershock. The use of confining members benefits aftershock resistance and reduces the failure probability of the mainshock-damaged structure. The PE values significantly increase with the aftershock scaling factor δ. Therefore, the effect of aftershocks should be considered in the seismic design and analysis of masonry structures.

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The Effect of Earthquake Damages Created by Shaking Table Tests on Dynamic Characteristics of Masonry Structures

Kaya,

Roudane,

Altunışık

et al. 2023

Sustainable Civil Infrastructures

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Performance Evaluation of a Reinforced Masonry Model and an Unreinforced Masonry Model Using a Shake Table Testing Facility

Cited by 15 publications

References 12 publications

Numerical Investigation of the Effects of Opening on the Strength of Masonry Wall

Numerical Investigation of the Effects of Opening on the Strength of Masonry Wall

Effect of Aftershocks on Seismic Fragilities of Single-Story Masonry Structures

The Effect of Earthquake Damages Created by Shaking Table Tests on Dynamic Characteristics of Masonry Structures

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