ABSTRACT
This paper discusses the bearing capacity of micropiles and the performance of shortening pile measurement using fiber optic technology. Results from a static pile load test on a micropile are presented, along with an analysis of the shortening of the pile shaft based on data obtained from fiber optic measurements. An optical fiber, placed at the center of the micropile, was used to measure deformations along the entire length of the pile. The test involved a 6-meter-long micropile and was conducted until failure. Successive load stages enabled the analysis of the behavior of the entire micropile shaft under load. The ground conditions facilitated the interaction of the pile side with the soil from the surface. The test was conducted on a micropile using rock bolting technology with ARCO steel pipes, which serve as the reinforcement of the micropile. A fiber optic sensor was placed inside the pipe (bar).
