详情

原文传递 USING TRANSVERSE PROFILE DATA TO COMPUTE PLASTIC DEFORMATION PARAMETERS FOR ASPHALT CONCRETE PAVEMENTS.

题名：	USING TRANSVERSE PROFILE DATA TO COMPUTE PLASTIC DEFORMATION PARAMETERS FOR ASPHALT CONCRETE PAVEMENTS.
作者：	Ali-HA; Tayabji-SD
关键词：	Asphalt-concrete-pavements; Calibration-; Mathematical-models; Mathematical-prediction; Plastic-deformation; Rutting-; Transverse-profile-data
摘要：	Previous studies have shown that the performance of in-service pavements may deviate significantly from that predicted by use of laboratory-calibrated performance models. Therefore calibration of performance prediction models with data from in-service pavements is important. Calibration of mechanistic rutting models by use of transverse profile data is explored. A well-known family of mechanistic rutting prediction models uses plastic deformation parameters [slope of elastic or plastic strain (or both) and load hardening factor] for quantification of the amount of permanent deformation resulting from each load application. For the purpose of obtaining these parameters, two traditional methods have been used: repeated load testing in the laboratory and calibration by use of time-series data from in-service pavements. Although the first suffers from the lack of compatibility between laboratory-predicted and actual performance, the second requires collection of field data for an extended period of time (years of monitoring) and may be interrupted by rehabilitation activities. The transverse profile contains valuable information that can be used for determining the contribution of each pavement layer to the observed rutting and the plastic deformation parameters. Transverse profile data were used for calibration of rutting prediction models. The stability and sensitivity of the computed parameters were also investigated.
总页数：	Transportation Research Record. 2000. (1716) pp89-97 (6 Fig., 4 Tab., 6 Ref.)
报告类型：	科技报告