Basement anti-floating anchor rod

The basement anti-floating anchor rod comprises a vertically-arranged steel reinforcement framework and positioning supports, the positioning supports are arranged at intervals in the length direction of the steel reinforcement framework, and the anti-floating anchor rod is arranged in an anchor hole in a penetrating mode; the device further comprises a telescopic assembly which is fixed to the positioning support. The telescopic assembly comprises a guide cylinder, a plug connector and a base; the plug connector penetrates through the guide cylinder in a sliding mode, the length of the plug connector is larger than that of the guide cylinder, the base is arranged at the end, away from the wall of an anchor hole, of the plug connector, and the base bears side pressure of grout and jacks the plug connector outwards so as to penetrate into the side wall of the hole. According to the anti-floating anchor rod, the poured slurry pushes the inserting piece to slide in the length direction of the guide cylinder thro