Title:
Experimental Behaviour of Precast Tunnel Segments in Steel Fiber Reinforcement with GFRP Rebars
Author(s):
Meda, A.; Rinaldi, Z.; Spagnuolo, S.; De Rivaz, B.; Giamundo, N.
Publication:
Symposium Paper
Volume:
343
Issue:
Appears on pages(s):
153-162
Keywords:
Tunnel segments, hybrid solution, Fiber reinforced concrete, GFRP reinforcement, full scale tests.
DOI:
Date:
10/1/2020
Abstract:
The interest in using fiber reinforced concrete (FRC) for the production of precast segments in tunnel lining, installed with Tunnel Boring Machines (TBMs), is continuously growing, as witnessed by the studies available in literature and by the actual applications. The possibility of adopting a hybrid solution of FRC tunnel segments with Glass Fiber Reinforced Polymer (GFRP) reinforcement is investigated herein. Full-scale tests were carried out on FRC segments with and without GFRP cage, with a typical geometry of metro tunnels. In particular, both flexural and point load full-scale tests were carried out, for the evaluation of
the structural performances (both in terms of structural capacity and crack pattern evolution) under bending, and under the TBM thrust. Finally, the obtained results are compared, in order to judge the effectiveness of the proposed technical solution.
Related References:
Almusallam, T., H., Al-Salloum, Y., A. (2006). “Durability of GFRP Rebars in Concrete Beams under Sustained Loads at Severe Environments.” Journal of Composite Materials, Vol. 40, No 7, pp. 623-637.
Alsayed, S.H., Al-Salloum, Y.A., Almusallam, T.H. (2000). “Performance of glass fiber reinforced plastic bars as a reinforcing material for concrete structures.” Composite Part
B: Engineering, Vol. 31, No 6-7, pp. 555-567.
Benmokrane, B., Chaallal, O., Masmoudi, R. (1995). “Glass fibre reinforced plastic (GFRP) rebars for concrete structure.” Construction and Building Materials, Vol. 9(6). 353-364.
Caratelli A., Meda A., Rinaldi Z., Romualdi P. (2011) “Structural behaviour of precast tunnel segments in fiber reinforced concrete”. Tunnelling and Underground Space Technology
26, Elsevier,.pp. 284-291.
Caratelli, A., Meda, A., Rinaldi, Z. (2012). “Design according to MC2010 of a fibrereinforced concrete tunnel in Monte Lirio, Panama”. Structural Concrete, Vol. 13, Issue
3;. pp. 166-173.
Caratelli, A., Meda, A., Rinaldi, Z., Spagnuolo S. (2016). “Precast tunnel segments with GFRP reinforcement”. Tunnelling and Underground Space Technology vol. 60 (Nov. 2016) pp. 10–20.
Caratelli, A., Meda, A, Rinaldi, Z., Spagnuolo, S., Giona Maddaluno. (2017). Optimization of GFRP reinforcement in precast segments for metro tunnel lining. Composite Structures
181, pp. 336–346.
Chen, Y., Davalos, J. F., Kim, H-Y. (2007). “Accelerated aging tests for evaluations of durability performance of FRP reinforcing bars for concrete structures.” Composite Structures, Vol. 78, March, pp. 101–111.
Coccia, S., Meda, A., Rinaldi, Z. (2015). “On shear verification according to the fib Model Code 2010 in FRC elements without traditional reinforcement”. Structural Concrete. Volume 16. Issue 4. Dec. 2015. Pp. 518-523.
Coccia S., Meda, A., Rinaldi, Z. Spagnuolo, S. (2017). Influence of GFRP skin reinforcement on the crack evolution in RC ties. Composites Part B. Vol. 119, pp. 90-100.
Cosenza, E., Manfredi, G., and Realfonzo, R. (1997). “Behavior and Modeling of Bond of FRP Rebars to Concrete.” Journal of Composites for Construction, Vol. 1(2), pp. 40-51.
De la Fuente A, Pujadas P, Blanco A, Aguado A. (2012) Experiences in Barcelona with the use of fibres in segmental linings. Tunnelling and Underground Space Technology 2012; 27(1):60-71.
Di Carlo, F., Meda, A., Rinaldi, Z. (2016). “Design procedure of precast fiber reinforcedsegments for tunnel lining construction”. Structural Concrete. Volume 17 (5), 747-759.
Ding, Y., Ning, X., Zhang, Y., Pacheco-Torgal, F., Aguiar J.B. (2014). Fibres for enhancing of the bond capacity between GFRP rebar and concrete. Construction and Building Materials 51; pp. 303–312.
fib Model Code for Concrete Structures 2010. (2013). Ernst &Sohn.
Issa, M., S., Metwally, I., M., Elzeiny, S., M. 2011 Influence of fibers on flexural behavior and ductility of concrete beams reinforced with GFRP rebars. Engineering Structures 33
(2011) 1754–1763
Kasper, T, Edvardsen C, Wittneben G, Neumann D. (2008) Lining design for the district heating tunnel in Copenhagen with steel fibre reinforced concrete segments. Tunnelling and Underground Space Technology; 23(5):574-587.
Kim, B. Doh, J-H., Yi, C.-K, Lee, J.-Y. (2013). Effects of structural fibers on bonding mechanism changes in interface between GFRP bar and concrete, Composites: Part B 45; pp 768–779.
Liao, L., De La Fuente A, Cavalaro S, Aguado A. (2010). “Design of FRC tunnel segments considering the ductility requirements of the Model Code 2010”. Tunnelling and Underground Space Technology 2015; 47:200-210.
Meda, A., Rinaldi, Z., Caratelli, A., Cignitti, F. (2016). “Experimental investigation on precast tunnel segments under TBM thrust action” Engineering Structures, Volume 119, 15 July 2016, Pages 174-185.
Micelli, F., Nanni, A. (2004). “Durability of FRP rods for concrete structures.” Construction and Building Materials Vol. 18, No 7, September, pp. 491–503.
Nanni, A. (ed.). (1993). “Fiber-Reinforced-Plastic (GFRP) Reinforcement for Concrete Structures: Properties and applications.” Elsevier Science. Developments in Civil Engineering, 42, p.450.
Plizzari, GA, Tiberti G. (2008). “Steel fibers as reinforcement for precast tunnel segments. Tunnelling and Underground Space Technology; 21(3-4).
Qin, R., Zhou, A., Lau, D. (2017).Effect of reinforcement ratio on the flexural performance of hybrid FRP reinforced concrete beams. Composites Part B 108; pp. 200-209.
Spagnuolo, S., Meda, A., Rinaldi, Z., Nanni, A. (2017). Precast Concrete Tunnel Segments with GFRP Reinforcement. Journal of Composites for Construction. ASCE.
Spagnuolo, S., Meda, A., Rinaldi, Z., Nanni, A. (2018). Curvilinear GFRP bars for tunnel segments applications. Composites Part B, 141, pp. 137–147.
Spagnuolo, S. (2020 – In Press). “Influence of non-uniform support on FRC and hybrid precast tunnel segments with glass fiber reinforced polymer bars under TBM thrust”. 1°
fib Symposium on Concrete and Concrete Structures. October 15th, 2019. University of Parma, Italy.
Wang, H., Belarbi, A. (2011). “Ductility characteristics of fiber-reinforced-concrete beams reinforced with FRP rebars, Construction and Building Materials 25, pp. 2391–2401.
Wang, H., Belarbi, A. (2013). Flexural durability of FRP bars embedded in fiber-reinforcedconcrete. Construction and Building Materials 44; pp. 541–550.
Wona, J. P., Park, C. G, Kim, H.H, Lee, S.W, Jang, C.I. (2008). Effect of fibers on the bonds between FRP reinforcing bars and high-strength concrete. Composites: Part B 39, pp.
747–755.
Yang, J.M., Min, K. H., Shih, H. O. Yoon, Y. S. (2012). Effect of steel and synthetic fibers on flexural behavior of high-strength concrete beams reinforced with FRP bars. Composites: Part B 43; pp. 1077–1086.
Yoo, D-Y., Kwon K-Y., Park J-J., Yoon Y-S. (2015). “Local bond-slip response of GFRP rebar in ultra-high-performance fiber-reinforced concrete.” Composite Structures Vol. 120, pp. 53–64.