TENSION TEST METHOD AND TENSION TEST DEVICE FOR GROUND ANCHOR

摘要

PURPOSE:To provide accurate and high reliability, by a method wherein elongation is continuously measured by measuring the moving distance of a wire material on which a specified tension is applied, while a pressure is continuously measured, and a relation between a tension power and elongation is continuously checked. CONSTITUTION:When a projection 1a of a tensional material 1 is moved toward a pulley 9, since a weight 10 is attached to the other end of a wire material, attached to the projection 1a by means of a locking tool 7, through the medium of the pulley 9, the wire material 8 is moved in the direction of the weight 10. Thereafter, the pulley 9 is rotated by a full amount, equivalent to the moving distance, motivated by friction between the wire material 8 and the pulley 9. From the rotary angle of the size of the pulley 9, elongation of the stretched material 1 can be easily measured, and based on the tension force of the tensional material and measurements of elongation, tension test data are made. This completes a report simultaneously with completion of a tension test, the drawn up report has accurate and high reliability, and can contribute to the construction management immediately.