United States Department of Transportation
i
Developing Load Distribution Formula for Louisiana Cast-in-Place Reinforced Concrete Box Culverts
-
2024-02-01
[PDF-9.66 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Final Report 03/2020 – 12/2023
-
Corporate Publisher:
-
Abstract:This report summarizes the results from an investigation of the behavior of cast-in-place (CIP) reinforced concrete (RC) box culverts. Load rating of CIP-RC box culverts has been a challenge for Departments of Transportation (DOTs) across the nation, including in Louisiana. Excessive conservatism built into the American Association of State Highway and Transportation Officials (AASHTO) Bridge Design Specifications (BDS) has led to situations where load posting, structural strengthening, or full replacement of culverts may be needed unless refined analysis methods are used to obtain more accurate results. Use of refined methods is a time-consuming burden to bridge engineers. Field inspections have not led to obvious conclusions that this class of culverts is under distress because of overloading, which was confirmed by an earlier project (Project 16-3ST) sponsored by the Louisiana Transportation Research Center (LTRC) [1]. This project was initiated to explore the potential for developing a live load distribution (LLDF) formula that produces more consistent results, removes unnecessary conservatism, and conforms to safety levels targeted by AASHTO-LRFD BDS.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
