Structural Engineering and Mechanics

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Experimental study of masonry walls strengthened with CFRP

  • Wei, Chang-Qin (School of Civil Engineering, Yantai University) ;
  • Zhou, Xin-Gang (School of Civil Engineering, Yantai University, Department of Civil Engineering, Tsinghua University) ;
  • Ye, Lie-Ping (Department of Civil Engineering, Tsinghua University)
  • Received : 2005.09.30
  • Accepted : 2006.10.11
  • Published : 2007.04.20
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Abstract

In order to study the ductility and the lateral load carrying capacity of the masonry walls strengthened with CFRPs (Carbon Fiber Reinforced Polymer sheets), three pieces of masonry walls subjected to cyclic loads with low frequency and vertical load of constant amplitude have been tested. Two different strengthening methods have been used. The strengthening efficiency is affected by the strengthening method. A simplified calculation approach has been introduced based on the experimental test results, and the theoretical results agree reasonably well with the experimental results. It is found that the critical loads, the critical displacements, the ultimate loads, the ultimate displacements and the ductile coefficients of the masonry walls strengthened with CFRPs improve remarkably (6%~57%). Therefore, the masonry structures strengthened with CFRPs are of better ductility and of better lateral load carrying capacity than the masonry structures without any strengthening measurements.

Keywords

References

  1. Albert, M.L., Elwi, A.E. and Cheng, J.J.R. (2001), 'Strengthening of unreinforced masonry walls using FRPs', J. Compos. Constr., 5(2), 76-84 https://doi.org/10.1061/(ASCE)1090-0268(2001)5:2(76)
  2. Amir, M.M. and Hamid, S.M. (1998), 'Ultimate shear capacity of reinforced concrete beams strengthened with web bonded fiber reinforced plastic plates', ACI Struct. J., 391-399
  3. Ehsani, M.R. (1995), 'Strengthening of earthquake damaged masonry structures with composite materials', Nonmetal/lie (FRP) Reinforcement Concrete Struct. RILEM. 680-687
  4. Ehsani, M.R. and Saadatm, A.H. (1997), 'AL-Saidy A Shear behavior of URM retrofitted with FRP overlays', J. Compos. Constr., 1(1), 17-25 https://doi.org/10.1061/(ASCE)1090-0268(1997)1:1(17)
  5. Ghobarah, A. and Galal, K.E.M. (2004), 'Out-of plane strengthening of unreinforced masonry walls with opening', J. Compos. Constr., 8(4),298-305 https://doi.org/10.1061/(ASCE)1090-0268(2004)8:4(298)
  6. Gilstrap, J.M. and Dolan, C.W. (1998), 'Out of plane bending of FRP reinforced masonry walls', Compos. Sci. Technol.,58(8),1277-1284 https://doi.org/10.1016/S0266-3538(98)00007-4
  7. Hall, J.D., Schuman, P.M. and Hamilton, H.R. (2002), 'Ductile anchorage for connecting FPR strengthening of under-reinforced masonry buildings', J. Compos. Constr., 6(1), 2097-2112
  8. Hamilton, H.R., Holberg, A and Caspersen, J. (1999), 'Strengthening concrete masonry with fiber reinforced polymers', Fourth International Symposium on Fiber Reinforced Polymers. Baltimore, Maryland. 1103-1115
  9. Kiss, R.M. and Kollar, L.P. (2002), 'Masonry strengthened with FRP subjected to combined bending and compression, Part II-tests and model predictions', J. Compos. Mater., 36(9), 1049-1063 https://doi.org/10.1177/0021998302036009475
  10. Schwegler, G. (1995), 'Masonry construction strengthened with fiber composite in seismically endangered zones', Proc. of the Tenth European Conf. on Earthquake Engineering. Rotterdam, Netherlands, 2299-2303
  11. Schwegler, G. (2000), 'Maintenance and restrengthening of materials and structures', Brick and Brickwork, Aedificatio Publishers (edt Wittmann FH), Freiburg, 105-110
  12. Seible, F. (1995), 'Repair and seismic retest of a full-scale reinforced masonry research building', Proc. of the 6th Int. Conf. on Structural Faults and Repair, 3,229-236
  13. Seible, F. and Hegemier, N. (1990), 'Priestley G Preliminary results from the TCCMAR 5-story full-scale reinforced masonry research building test', The Masonry Soc. J., 12(1), 53-60
  14. Thanasis, C.T (1998), 'Shear strengthening of reinforced concrete beams using epoxy bonded FRP composites', ACI Struct. J., 107-115
  15. Triantafillou, T.C. (1998), 'Strengthening of masonry structures using epoxy-bonded FRP laminates', J. Compos. Constr., 2(2),96-103 https://doi.org/10.1061/(ASCE)1090-0268(1998)2:2(96)
  16. Triantafillou, TC. (1998), 'Strengthening of masonry structures using epoxy-bonded FRP laminates', J. Compos. Constr., 2(2),96-103 https://doi.org/10.1061/(ASCE)1090-0268(1998)2:2(96)
  17. Tumialan, G, Galati, N. and Nanni, A. (2003), 'FRP strengthening of URM walls subject to out-of-plane loads', ACI Struct. J., 100(3),321-329
  18. Van Zijl, G.P.A.G and De Vries, P.A. (2005), 'Masonry wall crack control with carbon fiber reinforced polymer', J. Compos. Constr., 12(1),84-89

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