Earthquakes and Structures

  • 제15권3호
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  • Pages.275-283
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  • 2018
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Study on seismic strengthening of railway bridge pier with CFRP and concrete jackets

  • Ding, Mingbo (School of Civil Engineering, Lanzhou Jiaotong University) ;
  • Chen, Xingchong (School of Civil Engineering, Lanzhou Jiaotong University) ;
  • Zhang, Xiyin (School of Civil Engineering, Lanzhou Jiaotong University) ;
  • Liu, Zhengnan (School of Civil Engineering, Lanzhou Jiaotong University) ;
  • Lu, Jinghua (School of Civil Engineering, Lanzhou Jiaotong University)
  • 투고 : 2018.03.05
  • 심사 : 2018.06.21
  • 발행 : 2018.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

Seismic strengthening is essential for existing bridge piers which are deficient to resist the earthquake. The concrete and CFRP jackets with a bottom-anchoring method are used to strengthen railway bridge piers with low reinforcement ratio. Quasi-static tests of scaled down model piers are performed to evaluate the seismic performance of the original and strengthened bridge pier. The fracture characteristics indicate that the vulnerable position of the railway bridge pier with low reinforcement ratio during earthquake is the pier-footing region and shows flexural failure mode. The force-displacement relationships show that the two strengthening techniques using CFRP and concrete jackets can both provide a significant improvement in load-carrying capacity for railway bridge piers with low reinforcement ratio. It is clear that the bottom-anchoring method by using planted steel bars can guarantee the CFRP and concrete jackets to work jointly with original concrete piers Furthermore, it can be found that the use of CFRP jacket offers advantages over concrete jacket in improving the energy dissipation capacity under lateral cyclic loading. Therefore, the seismic strengthening techniques by the use of CFRP and concrete jackets provide alternative choices for the large numbers of existing railway bridge piers with low reinforcement ratio in China.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

참고문헌

  1. Abe, M. and Shimamura, M. (2014), "Performance of Railway Bridges during the 2011 Tohoku Earthquake", J. Perform. Constr. Facil., 28(1), 13-23. https://doi.org/10.1061/(ASCE)CF.1943-5509.0000379
  2. Aboutaha, R.S., Engelhardt, M.D., Jirsa, J.O. and Kreger, M.E. (1999), "Rehabilitation of shear critical concrete columns by use of rectangular steel jackets", ACI Struct. J., 96(1), 68-78.
  3. Chai, Y.H., Priestley, M.J.N. and Seible, F. (1994), "Analytical model for steel-jacketed RC circular bridge columns", J. Struct. Eng., 120(8), 2358-2376. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:8(2358)
  4. Chang, S.Y., Li, Y.F. and Loh, C.H. (2004), "Experimental study of seismic behaviors of as-built and carbon fiber reinforced plastics repaired reinforced concrete bridge columns", J. Bridge Eng., 9(4), 391-402. https://doi.org/10.1061/(ASCE)1084-0702(2004)9:4(391)
  5. Chang, S.Y. and Tsai, I.C. (2005), "Experimental study of as-built and composite materials retrofitted reinforced concrete columns", Can. J. Civil Eng., 32(2), 454-460. https://doi.org/10.1139/l04-120
  6. Chang, S.Y. (2010), "Experimental studies of reinforced concrete bridge columns under axial load plus biaxial bending", J. Struct. Eng., 136(1), 12-25. https://doi.org/10.1061/(ASCE)0733-9445(2010)136:1(12)
  7. Chaulagain, H., Rodrigues, H., Spacone, E. and Varum, H. (2015), "Assessment of seismic strengthening solutions for existing low-rise RC buildings in Nepal", Earthq. Struct., 8(3), 511-539. https://doi.org/10.12989/eas.2015.8.3.511
  8. Chen, X., Zhang, Y., Ding, M. and Li, X. (2016), "Research on the seismic design method for concrete gravity piers with low longitudinal reinforcement ratio", J. Railw Eng. Soc., 33(3), 76-80.
  9. GB50010, C.S. (2015), Code for Design of Concrete Structures, GB 50010 - 2010, China Building Industry Press, Beijing.
  10. Daudey, X. and Filiatrault, A. (2000), "Seismic evaluation and retrofit with steel jackets of reinforced concrete bridge piers detailed with lap-splices", Can. J. Civil Eng., 27(1), 1-16. https://doi.org/10.1139/l99-029
  11. Deng, J.D., Zong, Z.H. and Xia, Z.H. (2012), "Study on seismic strengthening demand of damage concrete bridge piers", Appl. Mech. Mater., 178-181, 2070-2074. https://doi.org/10.4028/www.scientific.net/AMM.178-181.2070
  12. Han, Q., Wen, J., Du, X. and Jia, J. (2014), "Experimental and numerical studies on seismic behavior of hollow bridge columns retrofitted with carbon fiber reinforced polymer", J. Reinf. Plast. Compos., 33(24), 2214-2227. https://doi.org/10.1177/0731684414557716
  13. Haroun, M.A., Mosallam, A.S., Feng, M.Q. and Elsanadedy, H.M. (2003), "Experimental investigation of seismic repair and retrofit of bridge columns by composite jackets", J. Reinf. Plast. Compos., 22(14), 1243-1268. https://doi.org/10.1177/0731684403035573
  14. Ji, C., Li, W., Hu, C. and Xing, F. (2016), "Data analysis on fiberreinforced polymer shear contribution of reinforced concrete beam shear strengthened with U-jacketing fiber-reinforced polymer composites", J. Reinf. Plast. Compos., 36(2), 98-120.
  15. Jia, J., Song, N., Xu, Z., He, Z. and Bai, Y. (2015), "Structural damage distribution induced by Wenchuan Earthquake on 12th May, 2008", Earthq. Struct., 9(1), 93-109. https://doi.org/10.12989/eas.2015.9.1.093
  16. Kakaletsis, D.J. (2016), "Comparative experimental assessment of seismic rehabilitation with CFRP strips and sheets on RC frames", Earthq. Struct., 10(3), 613-628. https://doi.org/10.12989/eas.2016.10.3.613
  17. Kawashima, K. (2000), "Seismic performance of RC bridge piers in Japan: an evaluation after the 1995 Hyogo-ken nanbu earthquake", Prog. Struct. Eng. Mater., 2(1), 82-91. https://doi.org/10.1002/(SICI)1528-2716(200001/03)2:1<82::AID-PSE10>3.0.CO;2-C
  18. Li, B., Lam, S.S., Cheng, Y.K., Wu, B. and Wang, Y.Y. (2015), "Strengthening of non-seismically designed beam-column joints by ferrocement jackets with chamfers", Earthq. Struct., 8(5), 1017-1038. https://doi.org/10.12989/eas.2015.8.5.1017
  19. Mazza, F. (2015), "Comparative study of the seismic response of RC framed buildings retrofitted using modern techniques", Earthq. Struct., 9(1), 29-48. https://doi.org/10.12989/eas.2015.9.1.029
  20. Montes, O., Jara, J.M., Jara, M. and Olmos, B.A. (2015), "Expected damages of retrofitted bridges with RC jacketing", J. Phys.: Conf. Ser., 628(1), 012048. https://doi.org/10.1088/1742-6596/628/1/012048
  21. Mostafa, A.A.B. and Razaqpur, A.G. (2013), "A new CFRP anchor for preventing separation of externally bonded laminates from concrete", J. Reinf. Plast. Compos., 32(24), 1895-1906. https://doi.org/10.1177/0731684413498633
  22. Ni, S., Wang, W. and Li, L. (2010), "The April 14th, 2010 Yushu earthquake, a devastating earthquake with foreshocks", Sci. China Earth Sci., 53(6), 791-793. https://doi.org/10.1007/s11430-010-0083-2
  23. Pantelides, C.P., Gergely, J., Reaveley, L.D. and Volnyy, V.A. (1999), "Retrofit of RC bridge pier with CFRP advanced composites", J. Struct. Eng., 125(10), 1094-1099. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:10(1094)
  24. Parsons, T., Ji, C. and Kirby, E. (2008), "Stress changes from the 2008 Wenchuan earthquake and increased hazard in the Sichuan basin", Nature, 454(7203), 509-510. https://doi.org/10.1038/nature07177
  25. Saadatmanesh, H., Ehsani, M.R. and Jin, L. (1996), "Seismic strengthening of circular bridge pier models with fiber composites", ACI Struct. J., 93(6), 639-647.
  26. Shao, G. and Jiang, L. (2014), "Experimental investigations of the seismic performance of bridge piers with rounded rectangular cross-sections", Earthq. Struct., 7(25), 463-484. https://doi.org/10.12989/eas.2014.7.4.463
  27. Smyrou, E. (2015), "FRP versus traditional strengthening on a typical mid-rise Turkish RC building", Earthq. Struct., 9(5), 1069-1089. https://doi.org/10.12989/eas.2015.9.5.1069
  28. Sun, Z., Li, H., Bi, K., Si, B. and Wang, D. (2017), "Rapid repair techniques for severely earthquake-damaged circular bridge piers with flexural failure mode", Earthq. Eng. Eng. Vib., 16(2), 415-433. https://doi.org/10.1007/s11803-017-0390-0
  29. Thermou, G.E., Pantazopoulou, S.J. and Elnashai, A.S. (2007), "Flexural behavior of brittle RC members rehabilitated with concrete jacketing", J. Struct. Eng., 133(10), 1373-1384. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:10(1373)
  30. Vandoros, K.G. and Dritsos, S.E. (2008), "Concrete jacket construction detail effectiveness when strengthening RC columns", Constr. Build. Mater., 22(3), 264-276. https://doi.org/10.1016/j.conbuildmat.2006.08.019
  31. Wang, W., Li, Z., Dang, H. and Shi, W. (2017), "Strong motion records and its characteristics in Jiuzhaigou Ms 7.0 earthquake on August 8, 2017", Chin. Earthq. Eng. J., 39(4), 652-656.
  32. Wright, T., DesRoches, R. and Padgett, J.E. (2011), "Bridge seismic retrofitting practices in the central and southeastern united states", J. Bridge Eng., 16(1), 82-92. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000128
  33. Yeh, Y.K. and Mo, Y.L. (2005), "Shear retrofit of hollow bridge piers with carbon fiber-reinforced polymer sheets", J. Compos. Constr., 9(4), 327-336. https://doi.org/10.1061/(ASCE)1090-0268(2005)9:4(327)
  34. Zaman, A., Gutub, S.A. and Wafa, M.A. (2013), "A review on FRP composites applications and durability concerns in the construction sector", J. Reinf. Plast. Compos., 32(24), 1966-1988. https://doi.org/10.1177/0731684413492868
  35. Zhen, J. (2001), China high-speed railway bridges, Higher Education Press, Beijing.

피인용 문헌

  1. Experimental Study on the Seismic Behaviour of Reinforced Concrete Bridge Piers Strengthened by BFRP Sheets vol.2019, pp.None, 2018, https://doi.org/10.1155/2019/4169421