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原文传递 Impact of Solid and Split Plates on Response of Falling Weight Deflectometer. Final rept. Sep 01-Aug 02.

题名：	Impact of Solid and Split Plates on Response of Falling Weight Deflectometer. Final rept. Sep 01-Aug 02.
作者：	rocha, s. nazarian, s. tandon, v.
关键词：	Flexible-pavements; Pavement-condition; *Load-tests.;Load-cells; Measuring-instruments; Pavement-deflections; Texas-; Strain-gauges; Plates-; Performance-evaluation; Calibration-.
摘要：	Currently, all TxDOT FWDs operate with a solid load plate. Several experimental and analytical studies have shown that such a configuration may result in a non-uniform load distribution under a rutted or weak flexible pavement. A split plate design that may improve the load distribution on rutted or weak pavements is currently available. A non-uniform load distribution may significantly affect the central deflection measured on a weaker pavement structure. Since more than 50%of Texas roadways are farm-to-market structures, this matter is of utmost importance. The behaviors of solid and split plates were thoroughly evaluated in this study. It seems that the FWDs equipped with split plates impart more uniform load to the pavement, and in general improve the performance of the FWD. However, the deflections measured with the two plates are different. As such, should TxDOT decide to utilize split load plats, a means of adjusting the deflections measured with the new configuration to those historically measured with the solid plate should be devised.
报告类型：	科技报告