PRESTRESS ESTIMATION METHOD OF BONDED PRESTRESSED STEEL USING ELECTRIC IMPEDANCE

摘要

The present invention relates to a test method for testing a tensile stress of a tensile stress material embedded in a plurality of prestressed concrete (PSC) test specimens having different intensional stresses, respectively, and measuring electrical impedance with a predetermined frequency, A relational expression deriving step of deriving a relational expression between a stress and an electrical impedance through a plurality of intrinsic tension stresses and electrical impedance values measured after the test body measurement step is performed; Measuring the electrical impedance with the same frequency as the measuring step of the test piece on the prestressed prestressing prestressing material in which the same tensile stress is required and measuring the measured electrical impedance using the tension stress and electrical impedance of the relational expression deriving step Assignment to Relational Expressions The present invention relates to a method for evaluating a tensile stress of an attachment type tent using an electrical impedance measurement value including a stress stress evaluation step for evaluating a tensile stress by estimating and evaluating a tensile stress of the attachment type tangent by measuring the electrical impedance, The measuring instrument is simplified compared to the evaluation method of the present invention, the measuring time is remarkably reduced to facilitate the measurement, and the accuracy of the stress stress evaluation can be improved by increasing the sensitivity in relation to the stress.