Linear Elastic Layer Theory as a Model of Displacements Measured Within and Beneath Flexible Pavement Structures Loaded by the Dynaflect.

摘要

Presented in the report are the results of an investigation of the capability of linear elastic theory to predict measured displacements on the surface,within,and beneath flexible pavement structures. In measuring predictive capability,the yard stick used was replication error. Sources of data were an NCHRP project,the AASHO Road Test,and the Texas Transportation Institute's Flexible Pavement Test Facility. Only the Texas source,which employed a vibrating surface load (the Dynaflect) and specially designed transducers lowered into small-diameter measurement holes,furnished both horizontal and vertical displacements. These were measured at various depths ranging from zero to 65inches beneath the pavement surface,and at horizontal distances ranging from 10to 216inches.