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Analysis Procedures for Evaluating Superheavy Load Movement on Flexible Pavements
Mohamed Nimeri
Hadi Nabizadeh
Elie Y. Hajj
Raj V. Siddharthan
Sherif Elfass
Murugaiyah Piratheepan
其他書名
Volume II: Appendix A : Experimental Program
出版
United States Department of Transportation, Federal Highway Administration
, 2018
URL
http://books.google.com.hk/books?id=dL3xvgEACAAJ&hl=&source=gbs_api
註釋
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.
