Investigation of Uplift Failures in Flexible Pipe Culverts, HR-306, 1990

(1990) Investigation of Uplift Failures in Flexible Pipe Culverts, HR-306, 1990. Transportation, Department of


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This study was precipitated by several failures of flexible pipe culverts due to apparent inlet floatation. A survey of Iowa County Engineers revealed 31 culvert failures on pipes greater than 72" diameter in eight Iowa counties within the past five years. No special hydrologic, topography, and geotechnical environments appeared to be more susceptible to failure. However, most failures seemed to be on pipes flowing in inlet control. Geographically, most of the failures were in the southern and western sections of Iowa. The forces acting on a culvert pipe are quantified. A worst case scenario, where the pipe is completely plugged, is evaluated to determine the magnitude of forces that must be resisted by a tie down or headwall. Concrete headwalls or slope collars are recommended for most pipes over 4 feet in diameter.

Item Type: Departmental Report
Keywords: Anchors (Mooring devices), Case studies, Failure, Hydraulics, Pipe culverts, Retaining walls, Tiedowns
Subjects: Transportation
Transportation > Bridges and tunnels
Transportation > Roads and highways
Transportation > Design and Construction
ID Code: 19657
Deposited By: Iowa DOT Library
Deposited On: 02 Jun 2015 11:26
Last Modified: 02 Jun 2015 11:26