Abstract
The application of external reinforcement with fiber reinforced polymer (FRP) to increase structural behavior of masonry structures has been a research focus area during the past decade. The near-surface mounting (NSM) technique is a relatively new retrofitting technique involves bonding FRP bars/strips insert into grooves cut into the surface of masonry. A numerical study was carried out to investigate the in-plane shear behavior of brick masonry wall strengthened with NSM FRP strips. A 2-D finite element (FE) model was used to simulate the structure behavior of strengthened masonry walls. The masonry was modeled by micro-modeling approach and FRP strips was modeled as attaching to the masonry mesh using the shear bond-slip relationships determined from experimental pull tests. The key shear behaviors of strengthened masonry wall panels in diagonal tension/shear tests was produced, including load-displacement response, crack development, and reinforcement contribution. Then, a parametric study was carried out to examine the contribution of different material and geometry property of FRP strips in the load carry capacity and shear ductility of strengthened masonry wall panels. Finally, the FE modeling for a real façade predicts the improvement of shear resistance which contributed by NSM FRP strengthening.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Triantafillou TC (1998) Strengthening of masonry structures using epoxy-bonded FRP laminates. J Compos Constr 2(2):96–104
Petersen RB, Masia MJ, Seracino R (2009) Bond behavior of NSM FRP strips bonded to modern clay brick masonry prisms: Influence of strip orientation and compression perpendicular to the strip. J Compos Constr 13(3):169–178
Petersen RB, Masia MJ, Seracino R (2010) In-plane shear behavior of masonry panels strengthened with NSM FRP strips. I: Experimental investigation. J Compos Constr 14(6):754–763
ASTM (2010) E519M - Standard test method for diagonal tension (shear) in masonry assemblages
ElGawady M, Lestuzzi P, Badoux M (2007) Static cyclic response of masonry walls retrofitted with fiber-reinforced polymers. J Compos Constr 11(1):50–61
Marcari G, Manfredi G, Prota A et al (2007) In-plane shear performance of masonry panels strengthened with FRP. Compos Part B 38:887–901
ElGawady MA, Lestuzzi P, Badoux M (2005) In-plane seismic response of URM walls upgraded with FRP. J Compos Constr 9(6):524–534
Grande E, Milani G, Sacco E (2008) Modelling and analysis of FRP-strengthened masonry panels. Eng Struct 30(7):1842–1860
Zhuge Y (2010) FRP-retrofitted URM walls under in-plane shear: review and assessment of available models. J Compos Constr 14(6):743–753
Petersen RB, Masia MJ, Seracino R (2010) In-plane shear behavior of masonry panels strengthened with NSM FRP strips. II: Finite element model. J Compos Constr 14(6):764–774
DIANA (2016) Displacement analysis finite element software. V10, TNO Building Division, Delft, The Netherlands
Lourenço PB (1996) Computational strategies for masonry structures. PhD dissertation, Delft University of Technology, Delft, The Netherlands
Acknowledgments
This project is supported by the Research Committee of University of Macau (Project no: MYRG2015-00142-FST).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 RILEM
About this paper
Cite this paper
Wang, X., Lam, C.C., Iu, V.P., Kou, K.P. (2019). Numerical Study of NSM FRP Strengthened Masonry Walls. In: Aguilar, R., Torrealva, D., Moreira, S., Pando, M.A., Ramos, L.F. (eds) Structural Analysis of Historical Constructions. RILEM Bookseries, vol 18. Springer, Cham. https://doi.org/10.1007/978-3-319-99441-3_179
Download citation
DOI: https://doi.org/10.1007/978-3-319-99441-3_179
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-99440-6
Online ISBN: 978-3-319-99441-3
eBook Packages: EngineeringEngineering (R0)