United States Department of Transportation
i
Tunnel Load Rating Examples: A Supplement to the Reference Guide for Load Rating of Tunnel Structures
-
2020-12-01
-
[PDF-3.71 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Contributors:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Supplemental Report, October 2019 to October 2020
-
Contracting Officer:
-
Corporate Publisher:
-
Abstract:This supplement to the FHWA Reference Guide for Load Rating of Tunnel Structures (Guide) presents two practical examples of real, in-service tunnel structures. The examples are based on the information contained within the Guide, and computations are presented in similar details as the load rating examples included in the Guide. The ratings are provided for LRFR only. The examples are rated for the HL-93 and EV vehicles. Additionally, a nominal permit load is applied and rated. For each example, one cross-section with one set of parameters (e.g. dead loads, soil parameters, etc.) is rated. Repetitive hand calculations are shown once in detail (equations) with the subsequent results summarized in tables. Elements from the original drawings and inspection reports (where applicable) are used in the examples where legible and useful. Supplemental sketches are developed as necessary in a similar style as the Guide. Where actual dimensions or properties are unclear or unavailable, reasonable approximations are made. The results of the two examples may be used to validate the load ratings in the records of the tunnels.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
