Evaluating existing culverts for load capacity allowing for soil structure interaction Page: I
This report is part of the collection entitled: Texas State Publications and was provided to The Portal to Texas History by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
TECHNICAL REPORT DOCUMENTATION PAGE
1. Report No.: 2. Government Accession No.: 3. Recipient's Catalog No.:
FHWA/TX-10/0-5849-1
4. Title and Subtitle: 5. Report Date: November 2010
Evaluating Existing Culverts for Load Capacity Allowing
for Soil Structure Interaction 6. Performing Organization Code:
8. Performing Organization Report
7. Author(s): William D. Lawson, Timothy A. Wood, No. 0-5849-1
Charles D. Newhouse, Priyantha W. Jayawickrama
9. Performing Organization Name and Address: 10. Work Unit No. (TRAIS):
Texas Tech University
College of Engineering
Box 41023 11. Contract or Grant No. :
Lubbock, Texas 79409-1023 0-5849
12. Sponsoring Agency Name and Address 13. Type of Report and Period Cover:
Texas Department of Transportation Technical Report September 2007-
Research and Technology Implementation Office August 2009
P. O. Box 5080 Sponsoring Agency Code:
Austin, TX 78763-5080
15. Supplementary Notes:
This study was conducted in cooperation with the Texas Department of Transportation and the
Federal Highway Administration.
16. Abstract:
This study explores culvert load rating practices and procedures as applied to TxDOT's archive of 1477 culvert
designs and their inventory of more than 13,000 in-service reinforced concrete box culverts. The problem is that
when older culverts are load-rated based on current AASHTO policy, many competent, serviceable culverts are
shown to be deficient, requiring load posting, retrofit or replacement. A disconnect exists between culvert
structural analysis practices and actual culvert performance. To address this challenge, the research focused on
development of a clear, repeatable and reliable procedure for TxDOT engineers and their consultants to use for
load rating culverts in the TxDOT roadway system. Articulated in TxDOT's Culvert Rating Guide, the new
load rating procedure uses three increasingly-sophisticated analysis approaches, ranging from a direct stiffness
frame model to aproduction-orientedfinite element model which accounts for soil-structure interaction.
Validation of the Culvert Rating Guide involved three major tasks. First, the researchers load-rated a
statistically representative sample of 100 of TxDOT's culvert designs. Second, a parametric study was
performed to evaluate six independent variables associated with culvert load rating. Third, instrumented load
tests on three in-service culverts were conducted to compare measured demands with predicted values. This
work showed that the analytical methods in the Culvert Rating Guide produce conservative load ratings yet still
allow for reduction in excess over-conservatism in the load rating process.
18. Distribution Statement
17. Key Words No restrictions. This document is available to
load rating, culvert, soil-structure interaction the public through the National Technical
Information Service, Springfield, Virginia
22161 www.ntis.gov
Security Classif. (of 20. Security Classif.
this report) (of this page) No. of Pages 310 22. Price
Unclassified Unclassified
Form DOT F 1700.7 (8-72)
Upcoming Pages
Here’s what’s next.
Search Inside
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Lawson, William D.; Wood, Timothy A.; Newhouse, Charles D. & Jayawickrama, Priyantha W. Evaluating existing culverts for load capacity allowing for soil structure interaction, report, December 2010; Lubbock, Texas. (https://texashistory.unt.edu/ark:/67531/metapth326775/m1/3/?q=%222009-08%22: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.