Transportation Pooled Fund Project of Highway Geotechnical Applications of Ground-Based Lidar

摘要

This paper discusses some preliminary results from the Transportation Pooled Fund Study TPF- 5(166). Participants in the study in include Arizona, California, Colorado, New Hampshire, New York, Pennsylvania, Tennessee and Texas. As part of the pooled fund project, Lidar scanning is conducted in each state, and the point clouds are analyzed to look at rock mass characterization, rockfall, slope stability and change detection. The purpose of the pooled fund project is to demonstrate geotechnical applications of ground-based LIDAR for highway slopes, and to train state DOTs on the use of point cloud processing software. Even though the project is not yet complete, a number of important concepts and procedures have been developed, including documented procedures for conducting Lidar scanning for geotechnical analysis, integrating Lidar results into other geotechnical software, analyzing overhangs for rockfall hazard, and analyzing ground movement using Lidar change detection. These topics will form the basis for the final AASHTO report on the Lidar pooled fund project which ends December, 2011.