ijaers social
facebook
twitter
Blogger
google plus

International Journal of Civil, Mechanical and Energy Science

ijcmes google ijcmes academia ijcmes rootindexing ijcmes reddit ijcmes IIFS ijcmes research bib ijaers digg ijcmes tumblr ijcmes plurk ijcmes I2OR ijcmes ASI ijcmes slideshare ijcmes open jgate ijcmes exactseek ijcmes Scrub the web ijcmes entireweb ijcmes speech counts ijcmes bibsonomy

Evaluation of Live Load Distribution Factors in Integral Bridges Using the Finite Element Method( Vol-3,Issue-4,July 2017 )

Author(s):

Scott Brendler, Yasser Khodair

Keywords:

Girder Distribution factors; Integral Bridges; Steel girders; finite element modeling; vehicular live load.

Abstract:

This paper investigates the adequacy of both AASHTO Standard Specification and AASHTO LRFD girder distribution factors (GDF) for use in the design of integral abutment bridges (IABs). A three-dimensional finite element model (FEM) was developed of an integral bridge to assess its GDFs. Vehicular live loading was applied in one, two, and three lanes in the FEM. The stresses corresponding to each case was utilized to compute the GDFs for each girder. The GDFs obtained from one lane loading were closer to those obtained from the AASHTO LRFD code than to AASHTO standard equation, which was overly conservative in all cases. The AASHTO GDF equations were excessively conservative for multiple lanes. The effect of several parameters such as, the number of piles, girder spacing, and boundary conditions on the GDF ratios was studied. The GDF ratios decreased in accuracy as the girder spacing decreased for one lane loaded. Both AASHTO 1996 and 2012 are more conservative in estimating simply supported bridge GDFs compared to an equivalent IAB.

Cite This Article:
Show All (MLA | APA | Chicago | Harvard | IEEE | Bibtex)
Paper Statistics:
  • Total View : 648
  • Downloads : 21
  • Page No: 186-192
Share:
References:

[1] Abaqus user’s manual, version 6.13.DassaultSystèmes, 2013.
[2] American Association of State Highway and Transportation Officials (AASHTO), Standard specification for highway bridges, AASHTO, Washington D.C. 1996.
[3] American Association of State Highway and Transportation Officials (AASHTO), LRFD Bridge Design Specification, second edition. AASHTO, Washington D.C. 2012.
[4] Arsoy, Sami, Barker, Richard M., and Duncan, Michael J. The Behaviour of Integral Abutment Bridges, The Virginia Department of Transportation, 1999.
[5] Barr, P. J. and Amin, M. D. N. (2006). “Shear live-load distribution factors for I-girder bridges.” Journal of Bridge Engineering, Vol. 11, No. 2, pp. 197–204.
[6] Barr, P. J., Eberhard, M. O., and Stanton, J. F. (2001). “Live-load distribution factors in prestressed concrete girder bridges.” Journal of Bridge Engineering, Vol. 6, No. 5, pp. 298–306.
[7] Brendler, S., and Khodair, Y. (2016). “Live load distribution factors for steel girder integral abutment bridges.” International Journal of Bridge Engineering.,Vol.4, No. 2, pp. 1-12.
[8] Davids, William G., Sandford, Thomas, Ashley, Sarah, DeLano, John, and Lyons, Christopher (2010).
[9] “Field-Measured Response of an Integral Abutment Bridge with Short Steel H-Piles”. ASCE Journal of Bridge Engineering, Vol.15, No. 1, pp. 32-43.
[10] Eom, Junsik and Nowak, Andrzej S. (2001). “Live Load Distribution for Steel Girder Bridges”.ASCE J of Bridge Engineering,.Vol.6, No. 6, pp. 489-497.
[11] Eamon, C. D. and Nowak, A. S. (2002). “Effect of edge-stiffening elements and diaphragms on bridge resistance and load distribution.” Journal of Bridge Engineering, Vol. 7, No. 5, pp. 258–266.
[12] Hassiotis, S., Khodair, Y., Roman, E., and Dehne, Y. “Evaluation of Integral Abutments Final Report”, NJDOT and FHWA, September, 2006.
[13] Huo, X. S., Wasserman, E. P., and Iqbal, R. A. (2005). “Simplified method for calculating lateral distribution factors for live load shear.” Journal of Bridge Engineering, Vol. 10, No. 5, pp. 544–554.
[14] Mabsout, M. E., Tarhini, K. M., Frederick, G. R., and Tayar, C. (1997a). “Finite-element analysis of steel girder highway bridges.” Journal of Bridge Engineering, Vol. 2, No. 3, pp. 83–87.
[15] Mabsout, M. E., Tarhini, K. M., Frederick, G. R., and Kobrosly, M. (1997b). “Influence of Sidewalks and railings on wheel load distribution in steel girder bridges.” Journal ofBridge Engineering, Vol. 2, No. 3, pp. 88–96.
[16] Mourad, Shehab and Tabsh, Sami. “Deck Slab Stresses in Integral Abutment Bridges”.ASCE Journal of Bridge Engineering, Vol. 4, No. 2, pp. 125-130.
[17] Mistry, Vasant.“Integral Abutment and Jointless Bridges”. FHWA. March, 2005. P.3-11
[18] Nassif, H., Liu, M., and Ertekin, O. (2003). “Model validation for bridge-road-vehicle dynamic interaction system.” Journal of Bridge Engineering, Vol. 8, No. 2, pp. 112–120.
[19] Olson, Scott M., Long, James H., Hansen, James R., Renekis, Dzuigas, LaFave, James M. “Modification of IDOT Integral Abutment Design Limitations and Details”, Illinois Center of Transportation, ICT-09-054, August 2009.
[20] Schwarz, M. and Laman, J. A. (2001). “Response of prestressed concrete igirder bridges to live load.” Journal of Bridge Engineering, Vol. 6, No. 1, pp. 1–8.
[21] Suksawang, N. and Nassif, H. H. (2007). “Development of live load distribution factor equation for girder bridges.” Transportation Research board, proceeding of the 87thannual meeting, Washington, D.C., January 21–25(On CD).
[22] Suksawang, N., Nassif, H. H., and Su, D. (2013). “Verification of Shear Live-load Distribution Factor Equations for I-Girder Bridges.” KSCEJournal of Civil Engineering, Vol. 17, No. 3, pp. 550–555.