Review on Influence of Infilled on the Seismic Behavior of Frame Structures

Elmalyh, Sanaa; Bouyahyaoui, A.; Cherradi, Toufik

doi:10.36478/jeasci.2019.356.372

Cited by 2 publications

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“…The evaluation of the buildings in Basel revealed that 45 to 80% of the existing URM buildings would experience damage grade 4 or 5, which correspond to very heavy damage and destruction [1], [2]. The fact that URM Walls are vulnerable to earthquakes makes their strengthening necessary.…”

Section: Introductionmentioning

confidence: 99%

In-Plane Shear Behavior of Unreinforced Masonry Walls Strengthened with Fiber Reinforced Polymer Composites

Elmalyh¹,

Bouyahyaoui²,

Cherradi³

et al. 2020

Adv. sci. technol. eng. syst. j.

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Unreinforced masonry (URM) wall is one of the oldest types of walls used around the world. During earthquakes, URM walls present a real danger to life safety due to their behavior characterized by a brittle failure caused by their feeble shear resistance to in-plane loads, which make their strengthening necessary. Numerous studies had been used fiber reinforced polymer (FRP) as strengthening systems to upgrade the seismic behavior of masonry walls. In this study, the effectiveness of using carbon fiber reinforced polymer (CFRP) to increase the energy dissipation and the load carrying capacity of URM walls subjected to in-plane loading is experimentally investigated. Tests were carried on five walls subjected to diagonal compression loadings, one wall was considered as a reference and the other were retrofitted by different configurations of unidirectional CFRP wraps. Despite the advantages associated with the use of such systems, it remains expensive to use, therefore in this study, different ratio and configurations of CFRP wraps were used to reinforce masonry walls to enhance their resistance with less costs. The parameters under investigation are the dimensions, the number and the orientation of CFRP layers. It was concluded that the CFRP enhance the shear resistance and the deformability of URM walls. Results show The CFRP wraps had a significant influence on the URM wall behavior. Important amelioration of deformations and ultimate shear strength were observed when the specimen reaches its peak load, it was determined that the use of CFRP wrap even in smaller ratios increased ductility, the load-bearing capacity and the in-plane shear strength capacity of the masonry walls. The compressive strength of the strengthened walls had experimentally observed to be 147.31% to 319.35% higher than URM wall. The CFRP wraps presents an important solution for the improvement of the in-plane behavior of masonry walls.

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Section: Introductionmentioning

confidence: 99%

In-Plane Shear Behavior of Unreinforced Masonry Walls Strengthened with Fiber Reinforced Polymer Composites

Elmalyh¹,

Bouyahyaoui²,

Cherradi³

et al. 2020

Adv. sci. technol. eng. syst. j.

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“…URM walls are widely used in many structures around the world due to many factors, like cost-effective, time of construction and durability; they are constructed by using different materials (bricks, stones, mortar, etc.,). The interaction between their different elements influence in a direct way their behavior, which is characterized, in the most cases by diagonal shear failures, sliding shear deformations and compression failures [1]. The seismic assessment of existing buildings in Basel indicates that during a moderate earthquake about 45% to 80% of existing URM buildings will experience damages grade 4, equivalent to heavy damage or grade 5 which correspond to destruction [2].…”

Section: Introductionmentioning

confidence: 99%

Shear Strength of Unreinforced Masonry Walls Retrofitted with CFRP

Elmalyh¹,

Bouyahyaoui²,

Cherradi³

et al. 2020

Adv. sci. technol. eng. syst. j.

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This paper investigates the in plane behavior of unreinforced masonry (URM) walls externally strengthening on both sides by different configurations of unidirectional carbon fiber reinforced polymer (CFRP) wraps. In order to evaluate the effectiveness of using the strengthening systems to improve the in plane behavior of masonry walls, the experimental program was conducted by testing four specimens. Initially, URM wall without retrofitting system; considered as a reference; was tested. The other specimens were retrofitted on both sides by different configurations of unidirectional CFRP wraps. Walls were tested following diagonal tensile (shear) test method. Then the effect of position, spacing, and reinforcement ratio on ductility, stiffness, shear behavior and failure modes of URM wall were evaluated. Experimental results confirmed the effectiveness of using CFRP in improving energy dissipation, strength, stiffness and ductility of URM wall. Furthermore, the strengthening system affected in a direct way the shear capacity and the deformability of URM walls.

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Review on Influence of Infilled on the Seismic Behavior of Frame Structures

Cited by 2 publications

References 0 publications

In-Plane Shear Behavior of Unreinforced Masonry Walls Strengthened with Fiber Reinforced Polymer Composites

In-Plane Shear Behavior of Unreinforced Masonry Walls Strengthened with Fiber Reinforced Polymer Composites

Shear Strength of Unreinforced Masonry Walls Retrofitted with CFRP

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