Delamination of GFRP Panels in Bridge Decks

Abstract:

Modern bridge structures need light decks with long durability and promising technical parameters. GFRP bridge deck creates possibilities in bridge designing. Parallel identification of GFRP deck panel: DTA analysis, spectroscopy analysis, scanning and optical microscope monitoring according to own investigation will be presented, in the paper. Modal, vibrations analysis is very important for bridge structures using light Glass Fiber Reinforced Polymer decks. The three 1^st modes and corresponding frequencies have been showed for chosen footbridges with GFRP ASSET system decks. The footbridges were excited by impact and human-induced vibrations. Good exploration of new material, like composite GFRP, generates potential to improve technology and make comparison analysis with traditional standard of materials. The dynamic behavior of damaged footbridge structures under moving loads has been studied. The paper is concerned with a micromechanical theory of macroscopic crack propagation due to stress-corrosion cracking in unidirectional glass-fiber-reinforced polymer composites, for bridge decks applications. The first form of damage in laminates is usually matrix micro cracks, which are intralaminar or ply cracks that traverse the thickness of the ply and run parallel to the fibers in that ply. The identification of early delamination process in footbridges GFRP deck is very important by them durability feature. Improving system for polymer resin using nanostructures is useful by aspect of reducing micro cracks and then macro cracks propagation.

• Periodical: Advanced Materials Research (Volume 1104)
• Pages: 137-142
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1104.137
• Online since: May 2015
• Authors: Beata Stankiewicz*
• Keywords: Bridge Structures, GFRP Deck, Mechanic of Delamination, Pultruded GFRP Material

References

[1] W. Karwowski, Strenght tests of new mechanical-adhesive connections for bridges made of pultruded FRP elements, First International Conference on Mechanics of Composites. NY, Long Island, 9-12 June (2014).

[2] Ki-Tae Park, Yoon-Koog Hwangi, Hyeong-Yeol Kim, Design of a pultruded GFRP deck for highway bridges, Advanced Materials for Constructions of Bridges, Buildings and other structures III. Davos, 7-12 September (2003).

[3] R. Sarfaraz, A.P. Vassilopoulos., T. Keller, Experimental investigation of the fatigue behavior of adhesively-bonded pultruded GFRP joints under different load ratios. International Journal of Fatigue 33 (2011) pp.1451-1460.

DOI: 10.1016/j.ijfatigue.2011.05.012

[4] W. Sebastian, T. Keller, Influences of polymer concrete surfacing and localized load distribution on behavior up to failure of an orthotropic FRP bridge deck. Composites Part B: Engineering, vol. 45., pp.1234-1250.

DOI: 10.1016/j.compositesb.2012.07.050

[5] J. Knippers, E. Pelke, M. Gabler, D. Berger, Bridges with Glass Fibre–Reinforced Polymer Decks: The Road Bridge in Friedberg, Germany.  Structural Engineering International (2010), November, vol. 20, No. 4, pp.400-404.

DOI: 10.2749/101686610793557762

[6] T. Keller, M. Schollmayer, Plate bending behavior of a pultruded GFRP bridge deck system. Composite Structures (2004), June, No. 64, p.285–295.

DOI: 10.1016/j.compstruct.2003.08.011

[7] M. Vovesny, T. Rotter, GFRP Bridge deck panel. 23rd Czech and Slovak International Conference Steel Structures and Bridges 2012. Podbanské, Slovakia 26-28 September (2012).

[8] B. Stankiewicz, Composite GFRP deck for bridge structures. 23rd Czech and Slovak International Conference Steel Structures and Bridges 2012. Podbanské, Slovakia 26-28 September (2012).

[9] B. Stankiewicz, GFRP Bridge deck panel by material and FEM analysis. First International Conference on Mechanics of Composites. NY, Long Island, 9-12 June (2014).

[10] B. Stankiewicz, Composite material GFRP and Ductal in decks of bridge structures. Journal of Materials Science and Engineerinig A 4 (9) 2014 pp.282-289.

[11] J.A. Nairn, Matrix Microcracking in Composites. Polymer Matrix Composites, Chapter 13, R. Talreja and J-A. Manson, eds. (2000).

[12] M. Shahverdi, A.P. Vassilopoulos, T. Keller, A phenomenological analysis of Mode I fracture of adhesively-bonded pultruded GFRP joints. Engineering Fracture Mechanics 78 (2011) pp.2161-2173.

DOI: 10.1016/j.engfracmech.2011.04.007

[13] B. Stankiewicz, M. Tatara, The possibilities of glass and GFRP in footbridges. 5th International Conference Footbridge 2014, London, 16-18 July (2014).