Method for detecting compactness of grouting body in steel bar sleeve connecting structure

The invention relates to a method for detecting the compactness of a grouting body in a steel bar sleeve connecting structure. A pre-pressing component, a force transmission rod, a telescopic adjusting piece, a vibration sensor and a data acquisition system are included. The force transmission rod is a rigid rod body and is installed on the rigid pre-pressing component through a telescopic adjusting piece. The rigid pre-pressing component is used for fixing the dowel bar on a wall where the steel bar sleeve connecting structure is located, and the telescopic adjusting piece is fixed on the rigid pre-pressing component and used for controlling the dowel bar to move in the direction perpendicular to the wall, so that the end part of the force transmission rod is tightly supported on the surface of a steel bar in a steel bar sleeve to be detected; the vibration sensor is fixed on the force transmission rod; the data acquisition system is used for acquiring an induction signal of the vibration sensor; the groutin