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Title: LESSONS LEARNED FROM CULVERT FAILURES AND NONFAILURES
Accession Number: 00666214
Record Type: Component
Availability: Find a library where document is available Abstract: A study of the deformation (flattening) of a number of flexible metal culverts, including some that collapsed and some that did not, is presented. The deformation measurements of the various arcs of the structure were used to develop a procedure for evaluating the stability of buried flexible structures on the basis of the degree of "flattening". It is a well-known fact that a flexible, buried structure depends not only on its own strength and rigidity but also on the backfill around it for support. Consequently, the importance of good backfill is relatively well understood. It is not apparent, however, how much deformation can be tolerated before flattening becomes a problem. Two failures where measurements were made as the deformation progressed are analyzed, and the degree of flattening at which failure occurred is evaluated. Several structures that have experienced considerable flattening but have not failed are evaluated. In addition to evaluating the degree of flattening that can be tolerated before problems are experienced, a correlation was made between the type of backfill and the potential for structure flattening. Soils data were acquired from project files or subsurface investigations. Charts showing the effect of type of backfill, as well as width of a select backfill envelope on structure flattening, were prepared.
Supplemental Notes: This paper appears in Transportation Research Record No. 1431, Culvert Distress and Failure Case Histories and Trenchless Technology. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Culvert distress and failure case history and trenchless technology Monograph Accession #: 01401234
Language: English
Authors: Cowherd, David CCorda, Ioan JPagination: p. 13-21
Publication Date: 1994
Serial: ISBN: 0309055091
Features: Figures
(5)
; References
(3)
; Tables
(10)
TRT Terms: Old TRIS Terms: Subject Areas: Bridges and other structures; Geotechnology; Highways; I20: Design and Planning of Transport Infrastructure; I42: Soil Mechanics
Files: TRIS, TRB
Created Date: Sep 15 1994 12:00AM
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