Coupled Field Monitoring and Structural Analysis to Assess Scour Conditions
Publication: Journal of Performance of Constructed Facilities
Volume 26, Issue 4
Abstract
This paper reports on the implementation of a relatively novel scour monitoring system that includes the ability to record substructure response to potential changes in scour conditions. The substructure instrumentation consists of tilt sensors installed at the top of each of two in-water piers on an existing common configuration of a steel I-girder bridge that is currently the site of severe scour problems. The key focus of this paper is the structural analysis that was required to assess the significance of potential instrumentation readings resulting from these sensors. Two types of structural analysis were performed: a one-dimensional pushover analysis to assess substructure stability and a three-dimensional finite-element analysis to evaluate superstructure performance as a result of movement to the substructure. As a result, the substructure displacements corresponding to unfavorable performance of the structure were determined in both types of analysis. The effects of scour on the superstructure are also used to draw attention to the need for a greater understanding of the consequences of scour.
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Acknowledgments
The field monitoring system described in this work was designed in collaboration with and installed under the supervision of Professor Jack Puleo at the University of Delaware. Funding for this work was provided by the Delaware Department of Transportation.
References
AASHTO. (2008). AASHTO LRFD bridge design specifications, 4th Ed., Washington, DC.
Abaqus [Computer software]. Dassault Systèmes, Vélizy-Villacoublay, France.
ASCE. (1994). Settlement analysis, Reston, VA.
Cann, M. (2009). “Structural modeling of the Indian River Inlet Bridge under current and potential scour conditions.” M.S. thesis, Univ. of Delaware, Newark, DE.
Capacity Analysis Pushover Program [Computer software]. TRC, Rancho Cordova, CA.
Connor, C. K. (1987). “High-tech tilt sensors monitor Cincinnati Bridge.” Roads Bridges, 25(8), 51–52.ROBRA3
Dickin, E. A., and Laman, M. (2003). “Moment response of short rectangular piers in sand.” Comput. Struct.CMSTCJ, 81(30-31), 2717–2729.
Dicleli, M., and Albhaisi, S. M. (2004). “Estimation of length limits for integral bridges built on clay.” J. Bridge Eng.JBENF2, 9(6), 572–581.
Federal Highway Administration (FHWA). (2001). “Evaluation scour at bridges.” Publication No. FHWA NHI 01-011, hydraulic engineering circular No. 18, Washington, DC.
GangaRao, H., and Halvorsen, G. (1980). “Analytical studies of the effects of movements on steel and concrete bridges.” Public Roads, 44(3), 103–115.PUROAQ
GangaRao, H., and Moulton, L. K. (1981). “Tolerable movement criteria for highway bridges.” Public Roads, 44(4), 140–147.PUROAQ
Graham, J., Alfaro, M., and Ferris, G. (2004). “Compression and strength of dense sand at high pressures and elevated temperatures.” Can. Geotech. J.CGJOAH, 41(6), 1206–1212.
McConnell, J., and Cann, M. (2010). “Assessment of bridge strength and stability under scour conditions.” Proc., 2010 Structures Congress, Senapathi, S., Casey, K., and Hoit, M., eds., ASCE, Reston, VA.
Ness, B. W. (1985). “Monitoring movement of the Milwaukee bridge.” Research Rep. No. R-1250, Testing and Research Division, Michigan Dept. of Transportation, Lansing, MI.
Skempton, A. W. (1951). “The bearing capacity of clays.” Proc., Building Research Congress, Vol. 1, London, 180–189.
STAAD [Computer software]. Bentley, Exton, PA.
Washer, G., Masterson, K., Phillips, C., and Fuchs, P. (2008). “Long-term structural monitoring for asset management.” Transportation research circular Issue E-C128, Transportation Research Board, Washington, DC, 238–248.
Wipf, T. (1991). “Use of tilt sensing equipment for monitoring long-term bridge movement.” Can. J. Civ. Eng.CJCEB8, 18(6), 1033–1046.
Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 26 • Issue 4 • August 2012
Pages: 489 - 498
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Jan 11, 2011
Accepted: Jun 14, 2011
Published online: Jun 16, 2011
Published in print: Aug 1, 2012
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