Events Calendar

Astani CEE Ph.D. Seminar

Speaker: Pedram Oskouie, Astani CEE Ph.D. Students

Talk Title: A framework for automated monitoring and movement analysis of highway retaining walls using 3D laser scanners

Abstract: The architecture engineering and construction (AEC) industry has adopted innovative and novel alternative methods to ensure faster, more economical, and higher quality project delivery. Recently, there has been an increase in the use of laser scanners in the industry to create as-built models for accurate (millimeters) and rapid assessment of progress, productivity, and quality assurance. As part of this research, the data from an ongoing highway construction project are processed and analyzed. The project uses 3D laser scanners for regular monitoring of mechanically stabilized earth (MSE) walls that retain the soil supporting the highway alignment. In order to start up processing the generated point clouds (3D as-built points), the accuracy of scans in terms of capturing all the geometrical features and details has to be verified. Additionally, the point clouds have to be cleaned from unwanted objects as well as noises. Once the point clouds are pre-processed, the vertical settlements and lateral displacements of the walls are calculated by comparing point clouds from different dates. This research aims to fill the current research and practice gaps by (1) Defining an automated scan plan and data collection framework to minimize scanning and point cloud registration- related errors (2) Defining an automated point cloud cleaning and noise removal process (3) Improving the quality and efficiency of change detection and movement analysis using 3-D laser scanners.

Location: John Stauffer Science Lecture Hall (SLH) - 102

Audiences: Everyone Is Invited

Contact: Evangeline Reyes