Double-control prestress tensioning equipment and application method thereof

The invention discloses double-control prestress tensioning equipment and an application method thereof. The double-control prestress tensioning equipment comprises a hydraulic cylinder-type extensive quantity sensor, a tensioning equipment hydraulic system directional circuit and the like. The hydraulic cylinder-type extensive quantity sensor is arranged at the rear of the top face of a cover plate of an oil tank of the double-control prestress tensioning equipment; a motor is arranged in right front of the top face of the cover plate; a hydraulic component manifold block is arranged in left front of the top face of the cover plate; a support in left front of the top face of the cover plate is provided with an operation panel; through pull rods are respectively arranged in four-corner through holes of a left cylinder cover and a right cylinder cover; a piston is arranged in a cylinder block; the middle of the inner side wall of the left cylinder cover is provided with a piston displacement sensor; a steel wi