APPARATUS AND METHOD FOR MEASURING PRESTRESS OF TENDON, AND MEASURING MEMBER FOR SUCH APPARATUS

摘要

The present invention relates to a prestress measuring method for measuring prestress applied to tendons with high reliability by precisely measuring the transversal strain of a mounting plate, that is the amount transversely strained when the mounting plate is pushed by pressing force applied by the mounting of the tendons in a mounting device on which the end of the tendons is mounted, and a tendon mounting device used in the prestress measuring method. The tendon mounting device comprises the mounting plate (10) with a predetermined thickness on which the tendons are mounted; and an expandable strain measuring member (2) formed of a band-shaped member for surrounding the lateral edge of the mounting plate (10), and having a strain sensor (20) for measuring the transversal strain of the mounting plate generated in the lateral direction of the mounting plate (10) while the mounting plate (10) is pushed by the pressing force of the tendons. The present invention can measure the transversal strain of the mounting plate (10) due to the prestress applied to the mounting plate (10) when the tendons are mounted, and can measures the prestress of the tendons based on the measured transversal strain and Poisson′s ratio of the mounting plate (10).