TY - GEN
T1 - Comparison of culvert load ratings calculated by three methods
AU - Wood, Timothy A.
AU - Lawson, William D.
AU - Newhouse, Charles D.
AU - Jayawickrama, Priyantha W.
PY - 2014
Y1 - 2014
N2 - This paper explores the influence of the choice of structural analysis method on inventory and operating rating factors calculated using American Association of State Highway and Transportation Officials load rating equations for bridge class culverts. The authors used three increasingly sophisticated, production-oriented structural analysis methods to load rate 86 reinforced concrete box culverts selected to represent the full population of 1855 culvert designs maintained by the Texas Department of Transportation (TxDOT). It is presumed that more complex soil structure interaction models will generate more accurate and less conservative load ratings than simpler models. Results indicate that increasing the model sophistication by using soil springs does not significantly change the inventory rating when compared to the first method. Increasing sophistication further by modeling soil using linear-elastic finite elements yields mixed results, showing an increase in the rating factor for sufficiently high soil moduli of elasticity but a slight decrease in the rating factor for lower soil moduli of elasticity.
AB - This paper explores the influence of the choice of structural analysis method on inventory and operating rating factors calculated using American Association of State Highway and Transportation Officials load rating equations for bridge class culverts. The authors used three increasingly sophisticated, production-oriented structural analysis methods to load rate 86 reinforced concrete box culverts selected to represent the full population of 1855 culvert designs maintained by the Texas Department of Transportation (TxDOT). It is presumed that more complex soil structure interaction models will generate more accurate and less conservative load ratings than simpler models. Results indicate that increasing the model sophistication by using soil springs does not significantly change the inventory rating when compared to the first method. Increasing sophistication further by modeling soil using linear-elastic finite elements yields mixed results, showing an increase in the rating factor for sufficiently high soil moduli of elasticity but a slight decrease in the rating factor for lower soil moduli of elasticity.
UR - http://www.scopus.com/inward/record.url?scp=84906827507&partnerID=8YFLogxK
U2 - 10.1061/9780784413272.144
DO - 10.1061/9780784413272.144
M3 - Conference contribution
AN - SCOPUS:84906827507
SN - 9780784413272
T3 - Geotechnical Special Publication
SP - 1473
EP - 1482
BT - Geo-Congress 2014 Technical Papers
PB - American Society of Civil Engineers (ASCE)
Y2 - 23 February 2014 through 26 February 2014
ER -