Concrete perfusion body cut-off structural object

The utility model relates to a concrete structure perfusion of the truncation which belongs to an auxiliary in the process of construction work. The concrete structure consists of a construction body and a holder. The construction body is folded on the holder. An end of construction body is fixed on the holder and the other end of construction body is connected with a draught. In construction, a structure perfusion of the truncation is arranged inside a reinforcing steel bar cage and once the concrete poured to be the bad concrete exceeds the designed elevation, the draught is pulled and then the construction body folded on the holder is unbent at the designed elevation, forming a separated interface; after the poured concrete is solidified, the bad concrete part above the poured part is exploded from the separated interface. Therefore the prior art overcomes the above-mentioned lacks and reaches better effect of the exploding.