Structural Engineering and Mechanics

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Effect of superstructure-abutment continuity on live load distribution in integral abutment bridge girders

  • Dicleli, Murat (Department of Engineering Sciences, Middle East Technical University) ;
  • Erhan, Semih (Department of Engineering Sciences, Middle East Technical University)
  • Received : 2009.01.29
  • Accepted : 2009.12.28
  • Published : 2010.03.30
⟨ Previous Next ⟩

Abstract

In this study, the effect of superstructure-abutment continuity on the distribution of live load effects among the girders of integral abutment bridges (IABs) is investigated. For this purpose, two and three dimensional finite element models of several single-span, symmetrical integral abutment and simply supported (jointed) bridges (SSBs) are built and analyzed. In the analyses, the effect of various superstructure properties such as span length, number of design lanes, girder size and spacing as well as slab thickness are considered. The results from the analyses of two and three dimensional finite element models are then used to calculate the live load distribution factors (LLDFs) for the girders of IABs and SSBs as a function of the above mentioned parameters. LLDFs for the girders are also calculated using the AASHTO formulae developed for SSBs. Comparison of the analyses results revealed that the superstructure-abutment continuity in IABs produces a better distribution of live load effects among the girders compared to SSBs. The continuity effects become more predominant for short span IABs. Furthermore, AASHTO live load distribution formulae developed for SSBs lead to conservative estimates of live load girder moments and shears for short-span IABs.

Keywords

References

  1. AASHTO (2007), LRFD Bridge Design Specifications, Fourth Edition, Washington, D.C.
  2. Barker, R.M. and Puckett, J.A. (1997), Design of Highway Bridges, John Wiley & Sons. New York, NY.
  3. Brena, S.F., Bonczar, C., Civjan, S.A., DeJong, J. and Crovo, D.S. (2007), "Evaluation of seasonal and yearly behavior of integral abutment bridge", J. Bridge Eng., 12(3), 296-305. https://doi.org/10.1061/(ASCE)1084-0702(2007)12:3(296)
  4. Brockenbrough, R.L. (1986), "Distribution factors for curved I-girder bridges", J. Struct. Eng., 112(10), 2200- 2215. https://doi.org/10.1061/(ASCE)0733-9445(1986)112:10(2200)
  5. Chen, Y. and Aswad, A. (1996), "Stretching span capability of prestressed concrete bridges under AASHTO LRFD", J. Bridge Eng., 1(3), 112-120. https://doi.org/10.1061/(ASCE)1084-0702(1996)1:3(112)
  6. Civjan, S.A., Bonczar, C., Brena, S.F., DeJong, J. and Crovo, D. (2007), "Integral abutment bridge behavior: Parametric analysis of a Massachusetts bridge", J. Bridge Eng., 12(1), 64-71. https://doi.org/10.1061/(ASCE)1084-0702(2007)12:1(64)
  7. Cook, R.D. (1995), Finite Element Modeling for Stress Analysis, John Wiley & Sons, New York, NY.
  8. Dicleli, M. (2005), "Integral abutment-backfill behavior on sand soil - pushover analysis approach", J. Bridge Eng., 10(3), 354-364. https://doi.org/10.1061/(ASCE)1084-0702(2005)10:3(354)
  9. Dicleli, M. and Albhaisi, S.M. (2003), "Maximum length of integral abutment bridges supported on steel h-piles driven in sand", Eng. Struct., 25(12), 1491-1504. https://doi.org/10.1016/S0141-0296(03)00116-0
  10. Dicleli, M. and Albhaisi, S.M. (2004), "Effect of cyclic thermal loading on the performance of steel H-piles in integral bridges with stub-abutments", J. Constr. Steel Res., 60(2), 161-182. https://doi.org/10.1016/j.jcsr.2003.09.003
  11. Dicleli, M. and Erhan, S. (2008), "Effect of soil and substructure properties on live load distribution in integral abutment bridges", J. Bridge Eng., 13(5), 527-539. https://doi.org/10.1061/(ASCE)1084-0702(2008)13:5(527)
  12. Dicleli, M. and Erhan, S. (2010), "Effect of soil-bridge interaction on the magnitude of internal forces in integral abutment bridge components due to live load effects", Eng. Struct., 32(1), 129-145. https://doi.org/10.1016/j.engstruct.2009.09.001
  13. Erhan, S. and Dicleli, M. (2009), "Live load distribution equations for integral bridge substructures", Eng. Struct., 31(5), 1250-1264. https://doi.org/10.1016/j.engstruct.2009.01.020
  14. Evans, L.T. (1982), Simplified Analysis of Laterally Loaded Piles, Ph.D. Thesis, University of California, Berkeley, California.
  15. Faraji, S., Ting, J.M., Crovo, D.S. and Ernst, H. (2001), "Nonlinear analysis of integral bridges: Finite element model", Geotech. Geoenviron., 127(5), 454-462. https://doi.org/10.1061/(ASCE)1090-0241(2001)127:5(454)
  16. FHWA (1986), "Seismic design of highway bridge foundations-Volume II: Design procedures and guidelines", Publication No. FHWA-RD-94-052, Federal Highway Administration, US Department of Transportation, Washington, D.C.
  17. Hays, C.O., Sessions, L.M. and Berry, A.J. (1986), "Further studies on lateral load distribution using FEA", Transportation Research Record 1072, Transportation Research Board, Washington, D.C.
  18. Husain, I. and Bagnariol, D. (1996), "Integral-abutment bridges", Ontario Ministry of Transportation, Report SO- 96-01, St. Catharines, Ontario, Canada.
  19. Imbsen, R.A. and Nutt, R.V. (1978), "Load distribution study on highway bridges using STRUDL finite element analysis capabilities", Proceedings of the Conference on Computing in Civil Engineering (ASCE), New York, NY.
  20. Khodair, Y.A. and Hassiotis, S. (2005), "Analysis of soil-pile interaction in integral abutment", Comput. Geotech., 32(3), 201-209. https://doi.org/10.1016/j.compgeo.2005.01.005
  21. Lehane, B.M., Keogh, D.L. and O'Brien, E.J. (1999), "Simplified elastic model for restraining effects of backfill soil on integral bridges", Comput. Struct., 73, 303-313. https://doi.org/10.1016/S0045-7949(98)00247-8
  22. Mabsout, M.E., Tarhini, K.M., Frederick, G.R. and Tayar, C. (1997), "Finite element analysis of steel girder highway bridges", J. Bridge Eng., 2(3), 83-87. https://doi.org/10.1061/(ASCE)1084-0702(1997)2:3(83)
  23. Mourad, S. and Tabsh, W.S. (1999), "Deck slab stresses in integral abutment bridges", J. Bridge Eng., 4(2), 125- 130. https://doi.org/10.1061/(ASCE)1084-0702(1999)4:2(125)
  24. Patrick, M.D., Huo, X.S., Puckett, J.A., Jablin, M. and Mertz, D. (2006), "Sensitivity of live load distribution factors to vehicle spacing", J. Bridge Eng., 11(1), 131-134. https://doi.org/10.1061/(ASCE)1084-0702(2006)11:1(131)
  25. Tarhini, K.M. and Frederick, G.R. (1992), "Wheel load distribution in I girder highway bridges", J. Struct. Eng., 118(5), 1285-1294. https://doi.org/10.1061/(ASCE)0733-9445(1992)118:5(1285)
  26. SAP2000 (2006), Integrated Finite Element Analysis and Design of Structures, Computers and Structures Inc., Berkeley.
  27. Yousif, Z. and Hindi, R. (2007), "AASHTO-LRFD live load distribution for beam-and-slab bridges: limitations and applicability", J. Bridge Eng., 12(6), 765-773. https://doi.org/10.1061/(ASCE)1084-0702(2007)12:6(765)

Cited by

  1. Incorporation of Skew Effects in Live-Load Distribution Factors Developed for Typical Integral Bridges vol.23, pp.2, 2018, https://doi.org/10.1061/(ASCE)BE.1943-5592.0001188
  2. Comparative Study on the Effect of Number of Girders on Live Load Distribution in Integral Abutment and Simply Supported Bridge Girders vol.16, pp.6, 2013, https://doi.org/10.1260/1369-4332.16.6.1011
  3. Skew Reduction Factors for Moment in NEXT Beam Bridges with Integral Abutments vol.878, pp.1662-7482, 2018, https://doi.org/10.4028/www.scientific.net/AMM.878.49