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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
REPORT |
This report is an archived publication and may contain dated technical, contact, and link information |
Publication Number: FHWA-HRT-18-050 Date: November 2018 |
Publication Number: FHWA-HRT-18-050 Date: November 2018 |
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Location | Incorrect Values | Corrected Values |
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TECHNICAL REPORT DOCUMENTATION PAGE, Box 15 |
Nadarajah Sivaneswaran (HRDI-20; ORCID: 0000-0002-3525-9165), Office of Infrastructure Research and Development, Turner-Fairbank Highway Research Center, served as the Contracting Officer’s Representative. | Nadarajah Sivaneswaran (HRDI-20; ORCID: 0000-0003-0287-664X), Office of Infrastructure Research and Development, Turner-Fairbank Highway Research Center, served as the Contracting Officer’s Representative. |
The movement of superheavy loads (SHLs) on the Nation’s highways is an increasingly common, vital economic necessity for many important industries, such as chemical, oil, electrical, and defense. Many superheavy components are extremely large and heavy (gross vehicle weights in excess of a few million pounds), and they often require specialized trailers and hauling units. At times, SHL vehicles have been assembled to suit the load being transported, and therefore, the axle configurations have not been standard or consistent. Accommodating SHL movements without undue damage to highway infrastructure requires the determination of whether the pavement is structurally adequate to sustain the SHL movement and protect any underground utilities. Such determination involves analyzing the likelihood of instantaneous or rapid load-induced shear failure of the pavement structure.
The goal of this project was to develop a comprehensive analysis process for evaluating SHL movement on flexible pavements. As part of this project, a comprehensive mechanistic-based analysis approach consisting of several analysis procedures was developed for flexible pavement structures and documented in a 10-volume series of Federal Highway Administration reports—a final report and 9 appendices.(1–9) This is Analysis Procedures for Evaluating Superheavy Load Movement on Flexible Pavements, Volume Ⅱ: Appendix A, Experimental Program, and it details the experimental program that was undertaken as a part of the development of a comprehensive analysis process for evaluating SHL movement on flexible pavements. This report is intended for use by highway agency pavement engineers responsible for assessing the structural adequacy of pavements in the proposed route and identifying mitigation strategies, where warranted, in support of the agency’s response to SHL-movement permit requests.
Cheryl Allen Richter, Ph.D., P.E.
Director, Office of Infrastructure
Research and Development
Notice
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Technical Report Documentation Page
1. Report No.
FHWA-HRT-18-050 |
2. Government Accession No.
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3 Recipient's Catalog No.
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4. Title and Subtitle
Analysis Procedures for Evaluating Superheavy Load Movement on Flexible Pavements, Volume II: Appendix A, Experimental Program |
5. Report Date
November 2018 |
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6. Performing Organization Code
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7. Author(s)
Mohamed Nimeri (ORCID: 0000-0002-3328-4367), |
8. Performing Organization Report No.
WRSC-UNR-201710-01A |
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9. Performing Organization Name and Address
Department of Civil and Environmental Engineering |
10. Work Unit No. (TRAIS)
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11. Contract or Grant No.
DTFH61-13-C-00014 |
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12. Sponsoring Agency Name and Address
Office of Infrastructure Research and Development |
13. Type of Report and Period Covered
Final Report; August 2013–July 2018 |
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14. Sponsoring Agency Code
HRDI-20 |
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15. Supplementary Notes
Nadarajah Sivaneswaran (HRDI-20; ORCID: 0000-0003-0287-664X*), Office of Infrastructure Research and Development, Turner-Fairbank Highway Research Center, served as the Contracting Officer’s Representative. |
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16. Abstract
The movement of superheavy loads (SHLs) has become more common over the years since it is a vital necessity for many important industries, such as chemical, oil, electrical, and defense. SHL hauling units are much larger in size and weight compared to standard trucks. SHL vehicles’ gross vehicle weights may be in excess of a few million pounds, so they often require specialized trailers and components with nonstandard spacing between tires and axles. Accommodating SHL movements requires the determination of whether the pavement is structurally adequate and involves the analysis of the likelihood of instantaneous or rapid load-induced shear failure. As part of the Federal Highway Administration project, Analysis Procedures for Evaluating Superheavy Load Movement on Flexible Pavements, a comprehensive experimental program was designed and conducted to verify and calibrate multiple theoretical approaches for the SHL analysis methodology. This experimental program included five different large-scale experiments with different objectives and characteristics using a large-scale box. The first two experiments consisted of a subgrade (SG) layer (experiment number (No.) 1) and an SG with a crushed-aggregate base layer on top (experiment No. 2). The subsequent three experiments consisted of a full pavement structure (experiment No. 3), a full pavement structure with a sloped shoulder (experiment No. 4), and a full pavement structure with a flexible and a rigid buried utility embedded in the SG layer (experiment No. 5). This report details each experiment’s objectives, materials characterization, and construction techniques. It also presents the experimental measurements. |
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17. Key Words
Flexible pavement, superheavy load, large-scale box, instrumentation, dynamic loading |
18. Distribution Statement
No restrictions. This document is available to the public through the National Technical Information Service, Springfield, VA 22161. |
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19. Security Classification (of this report) Unclassified |
20. Security Classification (of this page) Unclassified |
21. No. of Pages
110 |
22. Price
N/A |
Form DOT F 1700.7 (8-72) | Reproduction of completed page authorized |
*Revised 4/17/19