Glulam beams reinforced with FRP strips and their application in architecture

  • Radivoj Solarov TS ’Mileva Marić – Ajnštajn’, Novi Sad, Serbia
  • Milan Glišić University of Belgrade, Faculty of Architecture, Belgrade, Serbia
Keywords: FRP strips, glulam strengthening, architectural structures, testing samples, FEM model


This paper emphasizes the advantage of using carbon polymers while producing and strengthening glulam beams. Due to advanced research carried out in this field, the first application of carbon polymers based products was implemented in Western countries. Structural elements containing carbon polymers, or being reinforced by them, show higher resistance and durability properties, as well as the ability to be produced in various shapes. These features can find best application in architecture so the architects’ imagination in design could be realized. Many attractive buildings were constructed over the last decade, each of them showing exceptional safety, resistance to atmospheric influences, durability and cost-efficiency. Beside application of carbon polymers in the construction of new buildings, they are even more important in the field of historic heritage restoration. The original research carried out on ten samples in the laboratory is presented in the second part of the paper. Position of the reinforcement on the samples was chosen as it would be done in practical retrofit cases. Deformations of the samples exposed to pure bending were measured, so their behaviour in the elastic range could be analysed based on the results. Measured results were compared to those calculated by using FEM model, developed with software package AxisVM. Based on performed analysis, the conclusion was made that by strengthening timber glulam beams with FRP strips, the simple and efficient static load bearing capacity upgrade is gained.


Bajić, T., Pantović, K. (2012) Mogućnosti primene modularnih sistema u projektovanju održivog i klimatski svesnog socijalnog stanovanja, Arhitektura i urbanizam 33, pp. 42-59.

Bohannan, B. (1962) Prestressed wood members, Forest Products Journal, Vol. 12(12), pp. 596-602.

Jobin, J., Garzon-Barrragán, O. L. (2007) Flehural Strengthening of Glued Laminated Timber Beams with Steel and Carbon Fiber Reinforced Polymers, Master's Thesis, Chalmers University of Technology, Göteborg, Sweden.

Johnsson, H., Blanksvärd,T., Carolin, A. (2006) Glulam members strengthened by carbon fibre reinforcement, Material and Structures, No. 40, pp. 47-56.

Kitek Kuzman, M., Oblak, L., Vrantuša, S. (2010) Glued Laminated Timber in Architecture, Drvna industrija, No. 61, pp. 197-204.

Kosorić, V. (2012) Živeti bliže okruženju-koncept kuće, Arhitektura i urbanizam, 32, pp. 16-26.

Mark, R. (1961) Wood-aluminum beams within and beyond the elastic range, Forest Products Journal, Vol. 11(10), pp. 477-484.

Nenadović, A. (2010) Development, characteristics and comparative structural analysis of tensegrity type cable domes, SPATIUM International Review, No. 22, pp. 57-66.

Ogawa, H. (2000) Architectural application of carbon fibers Development of new carbon fiber reiforced glulam, Carbon, No. 38, pp. 211-226.

Okrajnov-Bajić, R. (2009) Self-compacting concrete and its application in contemporary architectural practise, SPATIUM International Review, No. 20, pp. 28-34.

Solarov, R., Kovačević, D., Radonjanin, V., Glišić, M. (2011) Armiranje drvenih lameliranih nosača sa karbonskim trakama, XXV Kongres i simpozijum o istraživanjima i primeni savremenih dostignuća u građevinarstvu u oblasti materijala i konstrukcija, DIMK, Tara, pp. 259-271.

Theakston, F. H. (1965) A feasibility study for strengthening timber beams with fiberglass, Canadian Agricultural Engineering 7(1), pp. 17-19.

Vavan-Vučeljić, S. (2010) Analiza mogućnosti povećanja energetske efikasnosti zgrada primenom fazno-promenjivih materijala, Arhitektura i urbanizam 27, pp. 78-87.

Original Scientific Paper