Device and method for rapidly detecting prestress under whole-hole anchor of prestressed concrete bridge

The invention discloses equipment and a method for quickly detecting prestress under a full-hole anchor of a prestressed concrete bridge, which have the advantages that a signal transmitting device for respectively transmitting timing signals when each working clamping piece is separated from a working anchor ring is additionally arranged on the working anchor, and strain gauges electrically connected with a computer are adhered to prestressed tendons in a one-to-one correspondence manner; a computer can acquire effective pre-stress values under anchors of all corresponding pre-stressed tendons according to timing signals and resistance values of corresponding strain gauges in one-time reverse tensioning operation of a center hole jack, so that the detection efficiency is greatly improved, the detection values are more convenient and visual to read, and if a certain beam of pre-stressed tendons are detected to be unqualified, the detection results can be targeted, and the detection accuracy is improved. And r