Ground anchorage tension force monitoring by using magnetostrictive method

ABSTRACT: For long term monitoring of the ground anchorage tension force, this paper presents a new way of monitoring by using the steel ring and magnetostrictive method. The steel ring is installed at the top part of anchorage, stress of steel ring is measured by magnetostrictive method, and tension force of ground anchorage is evaluated. This system only needs steel ring with paint, and no electrical wiring sets on the field. More than two years field test proves the accuracy and durability of the proposed monitoring system.