Masonry and monolithic circular arches strengthened with composite materials – A finite element model

Elmalich, Dvir; Rabinovitch, Oded

doi:10.1016/j.compstruc.2009.02.004

Cited by 23 publications

(13 citation statements)

References 21 publications

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“…This has been noted in many experimental and analytical studies in the last two decades on masonry arches [8,9,10,11], masonry barrel vaults [12,13,14], cross vaults and domes [15,16,17]. While these researchers predominantly focus on the static behaviour of masonry structures strengthened with composite materials, studies based on dynamic behaviour would more accurately simulate the load application conditions that induce failure, while facilitating the analysis of the dynamic parameters of a vaulted structure achieved after strengthening interventions employing FRPs.…”

Section: Introductionmentioning

confidence: 68%

Experimental Analysis of Dynamic Effects of FRP Reinforced Masonry Vaults

et al. 2015

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An increasing interest in the preservation of historic structures has produced a need for new methods for reinforcing curved masonry structures, such as arches and vaults. These structures are generally very ancient, have geometries and materials which are poorly defined and have been exposed to long-term historical movements and actions. Consequently, they are often in need of repair or reinforcement. This article presents the results of an experimental study carried out in the laboratory and during on-site testing to investigate the behaviour of brick masonry vaults under dynamic loading strengthened with FRPs (Fiber Reinforced Polymers). For the laboratory tests, the brick vaults were built with solid sanded clay bricks and weak mortar and were tested under dynamic loading. The experimental tests were designed to facilitate analysis of the dynamic behaviour of undamaged, damaged and reinforced vaulted structures. On-site tests were carried out on an earthquake-damaged thin brick vault of an 18th century aristocratic residence in the city of L’Aquila, Italy. The provision of FRP reinforcement is shown to re-establish elastic behavior previously compromised by time induced damage in the vaults.

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Section: Introductionmentioning

confidence: 68%

Experimental Analysis of Dynamic Effects of FRP Reinforced Masonry Vaults

et al. 2015

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“…For curved beams, which are also commonly used in practice, only two studies have been published (Elmalich and Rabinovitch, 2009;De Lorezis et al, 2006). Elmalich and Rabinovitch (2009) conducted a finite element analysis on circular arches strengthened with composite materials. De Lorezis et al (2006) developed an analytical solution of interfacial stresses between a curved beam and a bonded thin plate.…”

Section: Introductionmentioning

confidence: 99%

A three-parameter elastic foundation model for interface stresses in curved beams externally strengthened by a thin FRP plate

Wang

Zhang

2010

International Journal of Solids and Structures

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a b s t r a c tExternally bonding of fiber reinforced polymer (FRP) plates or sheets has become a popular method for strengthening reinforced concrete structures. Stresses along the FRP-concrete interface are of great importance to the effectiveness of this type of strengthening because high stress concentration along the FRP-concrete interface can lead to the FRP debonding from the concrete beam. In this study, we develop an analytical solution of interface stresses in a curved structural beam bonded with a thin plate. A novel three-parameter elastic foundation model is used to describe the behavior of the adhesive layer. This adhesive layer model is an extension of the two-parameter elastic foundation commonly used in existing studies. It assumes that the shear stress in the adhesive layer is constant through the thickness, and the interface normal stresses along two concrete/adhesive and adhesive/FRP interfaces are different. Closed-form solutions are obtained for these two interfacial normal stresses, shear stress within the adhesive layer, and beam forces. The validation of these solutions is confirmed by finite element analysis.

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“…Bu teknikler arasında FRP (Fiber Reinforced Polymer) ile yapının güçlendirilmesi son zamanlarda ön plana çıkmaktadır [7][8][9]. Elmalich ve Rabinovitch [10] çalışmalarında kompozit malzemelerle güçlendirilmiş kemerler için bir sonlu elemanlar modeli meydana getirmişlerdir. Milani ve Bucchi [11] FRP şeritler ile güçlendirilmiş kemer, kubbe gibi eğrisel tuğla yapı elemanlarının göçme mekanizması belirlemek için bir sonlu elemanlar modeli ortaya koymuşlardır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Tari̇hi̇ Yiğma Yapilardaki̇ Hasarli Kemerler Üzeri̇nde FRP Etki̇si̇ni̇n İncelenmesi̇

Fırat

Eren

2015

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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ÖZETBu çalışmada hasar verilmiş kemerlere uygulanan değişik FRP ile güçlendirme teknikleri deneysel olarak incelenmiştir. Yedi adet kemer numunesi, pres tuğla ve tarihi yapılardaki harca benzer kireç esaslı düşük dayanımlı harç kullanılarak imal edilmiştir. Yeterli dayanıma ulaşan (28 gün dayanımı) kemerlerden, referans olarak adlandırılan numune göçme anına kadar yüklenmiş, diğer numunelere de belli oranda hasar verilmiştir. Sonra farklı boyutlardaki FRP şeritleri, ankraj uygulamaları ve derz dolgu tekniğini içeren altı farklı güçlendirme tekniği altı kemer numunesi üzerinde teste tabi tutulmuştur. Güçlendirme tekniği uygulanan hasar verilmiş kemer numuneler, ticari bir yapısal analiz programı kullanılarak nümerik olarak modellenmiş ve deneysel sonuçlarla nümerik sonuçlar karşılaştırılmıştır. Elde edilen sonuçlar, güçlendirilmemiş referans numunesine oranla güçlendirilmiş kemer numunesi kapasitesinin en az %58 arttığını ve aynı zamanda kemer derzlerinin yalnızca epoksi reçinesi ile güçlendirilmesinin hasar görmüş tuğla kemer kapasitesini artırmada etkili bir alternatif olduğunu göstermiştir. INVESTIGATION OF FRP EFFECTS ON DAMAGED ARCHES IN HISTORICAL MASONRY STRUCTURES ABSTRACTThe present paper deals with experimental behavior of deformed brick masonry arches strengthened with the fiber reinforced polymer (FRP). Seven arches were fabricated using commercial clay brick and low strength lime-based mortar, trying to mimic historical structures. After reaching sufficient strength (28 day strength), one arch called reference specimen is tested under the ultimate load and other arches are given damage to a certain extent. Then six different strengthening arrangements, including different dimensions of FRP strips, spike anchors and joint grouting are implemented on six arches damaged. The numerical modeling of damaged masonry arches strengthened with FRP is performed using a commercially available structural analysis program and the numerical results are compared with the experimental ones. The experimental results show that the capacity of damaged masonry arch strengthened increases at least 58% in comparison with unstrengthened masonry arches and strengthening of joints with epoxy resin is an effective alternative to increase the damaged masonry arch capacity.

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Masonry and monolithic circular arches strengthened with composite materials – A finite element model

Cited by 23 publications

References 21 publications

Experimental Analysis of Dynamic Effects of FRP Reinforced Masonry Vaults

Experimental Analysis of Dynamic Effects of FRP Reinforced Masonry Vaults

A three-parameter elastic foundation model for interface stresses in curved beams externally strengthened by a thin FRP plate

Tari̇hi̇ Yiğma Yapilardaki̇ Hasarli Kemerler Üzeri̇nde FRP Etki̇si̇ni̇n İncelenmesi̇

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