DOI QR코드

DOI QR Code

Fatigue performance monitoring of full-scale PPC beams by using the FBG sensors

  • Wang, Licheng (State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology) ;
  • Han, Jigang (Liaoning Provincial Communication Planning & Design Institute) ;
  • Song, Yupu (State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology)
  • 투고 : 2013.10.27
  • 심사 : 2014.04.14
  • 발행 : 2014.06.25

초록

When subjected to fatigue loading, the main failure mode of partially prestressed concrete (PPC) structure is the fatigue fracture of tensile reinforcement. Therefore, monitoring and evaluation of the steel stresses/strains in the structure are essential issues for structural design and healthy assessment. The current study experimentally investigates the possibility of using fiber Bragg grating (FBG) sensors to measure the steel strains in PPC beams in the process of fatigue loading. Six full-scale post-tensioned PPC beams were exposed to fatigue loading. Within the beams, the FBG and resistance strain gauge (RSG) sensors were independently bonded onto the surface of tensile reinforcements. A good agreement was found between the recorded results from the two different sensors. Moreover, FBG sensors show relatively good resistance to fatigue loading compared with RSG sensors, indicating that FBG sensors possess the capability for long-term health monitoring of the tensile reinforcement in PPC structures. Apart from the above findings, it can also be found that during the fatigue loading, there is stress redistribution between prestressed and non-prestressed reinforcements, and the residual strain emerges in the non-prestressed reinforcement. This phenomenon can bring about an increase of the steel stress in the non-prestressed reinforcement.

키워드

참고문헌

  1. Alan, D.K., Michael, A.D., Patrick, H.J., LeBlanc, M., Koo, K.P., Askins, C.G., Putnam, M.A. and Friebele, E.J. (1997), "Fibre grating sensors", J. Lightwave. Technol., 15(8), 1442-1463. https://doi.org/10.1109/50.618377
  2. Bennett, E.W. and Joynes, H.W. (1977), "Fatigue Resistance of reinforcement in partially prestressed Beams", PCI. J., 22(2), 78-89. https://doi.org/10.15554/pcij.03011977.78.88
  3. Chan, T.H.T., Yu, L., Tam, H.Y., Ni, Y.Q., Liku, S.Y., Chung, W.H. and Cheng, L.K. (2006), "Fiber Bragg grating sensors for structural health monitoring of Tsing Ma bridge: Background and experimental observation", Eng. Struct., 28(5), 648-659. https://doi.org/10.1016/j.engstruct.2005.09.018
  4. Chung, W. and Kang, D. (2008), "Full-scale test of a concrete box girder using FBG sensing system", Eng. Struct., 30(3), 643-652. https://doi.org/10.1016/j.engstruct.2007.05.003
  5. Davis, M.A., Bellemore, D.G. and Kersey, A.D. (1997), "Distributed fiber Bragg grating strain sensing in reinforced concrete structural components", Cement. Concrete. Comp., 19(1), 45-57. https://doi.org/10.1016/S0958-9465(96)00042-X
  6. Feng, X.F. (2005), Study on fatigue behavior of PPC beams with mixed reinforcement, Ph.D. Dissertation, Dalian University of Technology, DaLian.
  7. Harajli, M.H. and Naaman, A.E. (1984), "Static and fatigue tests on partially prestressed beams", J. Struct. Eng. - ASCE, 111(7), 1602-1618.
  8. Jacobs, S., Matthys, S., Roeck, G.D., Taerwe, L., Waele, W.D. and Degrieck, J. (2007), "Testing of a prestressed concrete girder to study the enhanced performance of monitoring by integrating optical fiber sensors", J. Struct. Eng. - ASCE, 133(4), 541-548. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:4(541)
  9. Kenel, A., Nellen, P., Frank, A. and Marti, P. (2005) "Reinforcing steel strains measured by Bragg grating sensors", J. Mater. Civil. Eng., 17(4), 423-431. https://doi.org/10.1061/(ASCE)0899-1561(2005)17:4(423)
  10. Kerrouche, A., Boyle, W.J.O., Sun, T. and Grattan, K.T.V. (2009), "Design and in-the-field performance evaluation of compact FBG sensor system for structural health monitoring applications", Sensor. Actuat. A - Phys., 151(2), 107-112. https://doi.org/10.1016/j.sna.2009.01.021
  11. Kim,Y.S., Sung, H.J., Kim, H.W. and Kim, J.M. (2011), "Monitoring of tension force and load transfer of ground anchor by using optical FBG sensors embedded tendon", 7(4), Smart Struct. Syst., 7(4), 303-317. https://doi.org/10.12989/sss.2011.7.4.303
  12. Kuang, K. and Cantwell, W. (2003), "Use of conventional optical fibers and fiber Bragg gratings for damage detection in advanced composite structures: A review", Appl. Mech. Rev., 56(5), 493-513. https://doi.org/10.1115/1.1582883
  13. Li, H.N., Li, D.S. and Song, G.B. (2004), "Recent applications of fiber optic sensors to health monitoring in civil engineering", Eng. Struct., 26(11), 1647-1657. https://doi.org/10.1016/j.engstruct.2004.05.018
  14. Li, D.S., Ren, L., Li, H.N. and Song, G.B. (2012), "Structural health monitoring of a tall building during construction with fiber Bragg grating sensors", Int. J. Distrib. Sens. N., 2012(2012), 1-10.
  15. Lin, Y.B., Chang, K.C., Chern, J.C. and Wang, L.A. (2004), "The health monitoring of a prestressed concrete by using fiber Bragg grating sensors", Smart. Mater. Struct., 13(4), 712-718. https://doi.org/10.1088/0964-1726/13/4/008
  16. Merzbacher, C.I., Kersey, A.D. and Friebele, E.J. (1996), "Fiber optic sensors in concrete structures: a review", Smart. Mater. Struct., 5(2), 196-208. https://doi.org/10.1088/0964-1726/5/2/008
  17. Naaman, A.E. and Founas, M. (1991), "Partially prestressed beams under random amplitude fatigue loading", J. Struct. Eng. - ASCE, 117(12), 3742-3761. https://doi.org/10.1061/(ASCE)0733-9445(1991)117:12(3742)
  18. Sante, R.D. and Donati, L. (2013), "Strain monitoring with embedded Fiber Bragg Gratings in advanced composite structures for nautical applications", Measurement, 46(7), 2118-2126. https://doi.org/10.1016/j.measurement.2013.03.009
  19. Shahawi, M. and Batchelor, B. (1986), "Fatigue of partially prestressed concrete", J. Struct. Eng. - ASCE, 112(3), 524-537. https://doi.org/10.1061/(ASCE)0733-9445(1986)112:3(524)
  20. Taked, S., Minakuchi, S., Okabe, Y. and Takeda, N. (2005), "Delamination monitoring of laminated composites subjected to low-velocity impact using small-diameter FBG sensors", Compos. Part A- Appl. S., 36(7), 903-908. https://doi.org/10.1016/j.compositesa.2004.12.005
  21. Yu, Z.W., Li, J.Z. and Song, L. (2012), "Experimental study on fatigue behaviors of heavy-haul railway bridges", China Civil Eng. J., 45(2), 115-126.
  22. Zhang, J.L. (2006), Experimental study on fatigue behavior of Retard-bonded partially prestressed concrete beams, Ph.D. Dissertation, Dalian University of Technology, DaLian.
  23. Zhao, X.G. and Qiu, H.T. (2007), "Application of fiber Bragg grating sensing technology to tunnel monitoring", Chinese J. Rock Mech. Eng., 26(3), 587-593.
  24. Zhu, H.H., Yin, J.H., Zhang, L., Jin, W. and Dong, J.H. (2010), "Monitoring internal displacements of a model dam using FBG sensing bars", Adv. Struct. Eng., 13(2), 249-262. https://doi.org/10.1260/1369-4332.13.2.249

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