2019 Volume 75 Issue 3 Pages 288-302
Ground anchors (hereinafter anchors) are structures that apply a tensioning force to a tendon to improve the stability of a slanting surface or slope. The change in the tensioning force depends on the amount of stretching of the free length of the tendon. One way of measuring tensile load of anchor is using a load cell. The measurement results in this case can be used to detect ground movement, similar to those of the displacement observation techniques commonly used for slopes or other surfaces. However, the relationship between displacement observation and load change in a load cell has not yet been sufficiently evaluated.
In this study, we evaluated the relationships between various displacement observations and load cell changes on four slopes where ground movement has caused an increase in the anchor load. We found a robust linear relationship between the changes in displacement observation and the amount of tendon elongation due to the increased load. Load cell installed on ground anchor has been confirmed possibility which can be used as displacement sensor.