Caltrans – Geotechnical Resistance Capacity and Stress Distribution of Soil/Grout Interface of Ground Anchors in Various Soil/Rock Conditions using Continuous Fiber Optics Strain Technology and Strain Compatibility Methodology
CSI is working with Caltrans to develop a cutting-edge distributed fiber optic sensing system for monitoring ground anchors. The primary goal is to quantify the distributed soil-grout-anchor interaction and load/stain transfer mechanism in various ground conditions during construction, pull-out testing, and long-term service life. Field monitoring data combined with numerical modeling analysis will be used to improve design protocols for estimating ground anchor pull-out resistance capacity. Note, an innovative fiber optic cable-embedded steel tendon is being developed as part of a broader approach to quantify behavior of ground anchor system subcomponents. Distributed strain and temperature will be measured in ground anchors installed on various Caltrans projects.
![](https://coesmartcenter.wpengine.com/wp-content/uploads/2023/10/ground_anchors.png)
Ground anchors installed with earth retention structures to provide lateral resistance to slope failure
Collaborator: California Department of Transportation (Caltrans), DYWIDAG, Drill Tech Drilling & Shoring
Researchers: Maksymilian Jasiak, James Wang, Wonjun Cha, Kenichi Soga (UC Berkeley), Jinho Park, Seungwoon Woon Han, Deh-Jeng Jang (Caltrans), Bernhard Froemel (DYWIDAG), Dale Hata (Drill Tech)
Domains: Transportation Infrastructure
Capabilities: Distributed Fiber Optic Sensing (DFOS) – Distributed Strain Sensing (DAS), Distributed Temperature Sensing (DTS)
![](https://coesmartcenter.wpengine.com/wp-content/uploads/2023/10/ground_anchor2.png)
Strain transfer mechanism
Publications: TBA!