Flexural Reinforcement of Glulam Timber Beams and Joints with Carbon Fiber-Reinforced Polymer Rods

Micelli, Francesco; Scialpi, Vincenza; Tegola, Antonio La

doi:10.1061/(asce)1090-0268(2005)9:4(337)

Cited by 74 publications

(30 citation statements)

References 6 publications

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“…Micelli, Scialpi i La Tegola [12] razmatrali su mogućnost upotrebe šipki na bazi karbonskih vlakana (CFRP) kao ojačanja lepljenih lameliranih drvenih nosača. Šest nosača od lepljenog lameliranog drveta (smreka), od čega četiri ojačana, ispitano je na savijanje.…”

Section: Tabela 4 Program Eksperimentalnog Ispitivanjaunclassified

“…Micelli, Scialpi and La Tegola [12] investigated the possibility of using CFRP bars as a reinforcement for glued laminated timber beams. Six glued laminated timber (spruce) beams, out of which four were reinforced, were tested in bending.…”

Section: Tabela 4 Program Eksperimentalnog Ispitivanjamentioning

confidence: 99%

“…Figure 4. Crossections of reinforced beams [12] Eksperimentalni rezultati su pokazali da se postavljanjem CFRP šipki sa zategnute strane poprečnog preseka može značajno poboljšati nosivost i krutost nosača. Za procente ojačanja 0,51% i 1,03%, zabeleženo je povećanje graničnog momenta od 26% i 82%, odnosno povećanje krutosti od 8% i 19% u odnosu na neojačane nosače.…”

Section: Tabela 4 Program Eksperimentalnog Ispitivanjaunclassified

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Strengthening of timber beams using FRP bars

Todorović¹,

Stevanović²,

Glišović³

2017

Gra Mat Konst

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UVODDrvo kao jedan od najstarijih građevinskih materijala nalazi primenu i u savremenoj građevinskoj praksi zahvaljući tome što predstavlja prirodan, obnovljiv, biorazgradiv i estetski atraktivan materijal. Potreba da se ojačaju drvene konstrukcije može nastati iz različitih razloga, kao što su mehanička oštećenja, destruktivni uticaji okruženja ili povećanje korisnog opterećenja. U ovom kontekstu, razvoj efikasnih metoda ojačanja od velike je važnosti.Poslednjih godina, primena polimera ojačanih vlaknima (Fiber Reinforced Polymer -FRP) u oblasti sanacija i ojačanja građevinskih konstrukcija omogućena je zahvaljujući povećanoj dostupnosti i sve nižoj ceni. FRP materijali su grupa naprednih kompozita u okviru kojih se nalaze vlakna izraženih mehaničkih karakteristika (najčešće staklena ili karbonska) povezana izuzetno čvrstom, hemijski otpornom i trajnom sintetičkom smolom (kao matricom). Ovi kompozitni materijali dostupni su kao gotovi fabrički proizvodi najčešće u formi traka, tkanina ili šipki. Povezivanje FRP ojačanja za konstrukcijske elemente izvodi se uglavnom lepljenjem uz primenu odgovarajućih polimernih lepkova. Ovi materijali se već dugo uspešno koriste pri ojačanju betonskih i zidanih konstrukcija [1,2], dok je njihova primena za ojačanje i sanaciju drvenih konstrukcija još uvek u fazi ispitivanja kako bi se obezbedila pravilna i optimalna Marija Todorović, Asistent -student doktorskih studija, mast. inž.

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Section: Tabela 4 Program Eksperimentalnog Ispitivanjaunclassified

Section: Tabela 4 Program Eksperimentalnog Ispitivanjamentioning

confidence: 99%

Section: Tabela 4 Program Eksperimentalnog Ispitivanjaunclassified

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Strengthening of timber beams using FRP bars

Todorović¹,

Stevanović²,

Glišović³

2017

Gra Mat Konst

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“…The use of composite materials for the reinforcement of existing timber members is not new [9][10][11][12][13][14][15][16]. Fiber-Reinforced Polymer (FRP) materials have been proven to have good tensile mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Basalt FRP Spike Repairing of Wood Beams

Righetti

Corradi

Borri

2015

Fibers

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This article describes aspects within an experimental program aimed at improving the structural performance of cracked solid fir-wood beams repaired with Basalt Fiber Reinforced Polymer (BFRP) spikes. Fir wood is characterized by its low density, low compression strength, and high level of defects, and it is likely to distort when dried and tends to fail under tension due to the presence of cracks, knots, or grain deviation. The proposed repair technique consists of the insertion of BFRP spikes into timber beams to restore the continuity of cracked sections. The experimental efforts deal with the evaluation of the bending strength and deformation properties of 24 timber beams. An artificially simulated cracking was produced by cutting the wood beams in half or notching. The obtained results for the repaired beams were compared with those of solid undamaged and damaged beams, and increases of beam capacity, bending strength and of modulus of elasticity, and analysis of failure modes was discussed. For notched beams, the application of the BFRP spikes was able to restore the original bending capacity of undamaged beams, while only a small part of the original capacity was recovered for beams that were cut in half.

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“…However, limited full-scale applications and field demonstration projects have been conducted (Gentile et al (2002), Buell and Saadatmanesh (2005)). The majority of strengthening applications has been related to glulam beams simple supported under bending moments (Gilfillan et al 2003, Micelli et al 2005. No studies or applications are known on timber-FRP strengthening of indeterminate structural systems.…”

Section: Introductionmentioning

confidence: 99%

Double Span Continuous Glulam Slabs Strengthened with GFRP

2014

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Abstract. Full-scale slab strips were tested in order to analyze the flexural response of GFRP-glulam slab systems under monotonic loading. The type of strengthening technique (externally bonded reinforcement -EBR and near-surface mounted -NSM) and the increase target in terms of ultimate load capacity (20% and 40%) were the main studied parameters. GFRP sheets were utilized in the EBR technique, while GFRP rods were applied in NSM technique. In this work the tests are described in detail, and the obtained results are presented and discussed.

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Flexural Reinforcement of Glulam Timber Beams and Joints with Carbon Fiber-Reinforced Polymer Rods

Cited by 74 publications

References 6 publications

Strengthening of timber beams using FRP bars

Strengthening of timber beams using FRP bars

Basalt FRP Spike Repairing of Wood Beams

Double Span Continuous Glulam Slabs Strengthened with GFRP

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