Joint Load-Transfer Prediction Model Considering Dowel-Bar Position Deviation in Rigid Pavements
A double-layer structure model of pavements that considered interlayer contact status was established to manage the dowel-bar position deviation problem in rigid pavements. The deviation effect of three-dimensional positions, such as horizontal angle, vertical angle, and embedded depth, on joint load-transfer capacity was analyzed. A load-transfer capacity prediction model that considered dowel-bar position deviation was established via ternary nonlinear regression. The load correction factor and its range were also proposed. This prediction model can effectively reflect the joint load-transfer capacity during dowel position deviation after verification via falling weight deflectometer testing. The horizontal angle of the dowel bar minimally affected joint load-transfer coefficient. By contrast, the joint load-transfer coefficient decreased almost linearly as the vertical angle increased. The coefficient reduced by approximately 12% when the vertical angle was 15°. Meanwhile, the load-transfer coefficient was maximized when a dowel bar was embedded in the middle of a surface. The coefficient would decline either upward or downward. The coefficient particularly decreased by 10% when the position was 2 cm downward.
- Record URL:
-
Supplemental Notes:
- © 2015 RIOH.
-
Authors:
- Zhang, Yan-cong
- Gao, Ling-ling
- Publication Date: 2015-9
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 20-26
-
Serial:
- Journal of Highway and Transportation Research and Development (English Edition)
- Volume: 9
- Issue Number: 3
- Publisher: Research Institute of Highway, Ministry of Transport
- EISSN: 2095-6215
- Serial URL: http://ascelibrary.org/journal/jhtrcq
Subject/Index Terms
- TRT Terms: Dowels (Fasteners); Falling weight deflectometers; Load transfer; Mathematical prediction; Pavement joints; Regression analysis; Rigid pavements
- Subject Areas: Highways; Pavements; I22: Design of Pavements, Railways and Guideways;
Filing Info
- Accession Number: 01579004
- Record Type: Publication
- Files: TRIS, ASCE
- Created Date: Oct 23 2015 9:28AM