Water injection apparatus of acoustic pipes in steel pipe concrete column, and water injection method thereof

The invention discloses a water injection apparatus of acoustic pipes in a steel pipe concrete column, and a construction method for injecting water to the acoustic pipes in the steel pipe concrete column through the water injection apparatus. The water injection apparatus comprises: an outer frame, wherein an accommodating space is arranged in the outer frame, and the outer frame is provided with suspending point mechanisms; and water storage containers arranged in the accommodating space of the outer frame, wherein every water storage container is provided with a water injection pipe provided with a valve. The construction method comprises the following steps: arranging a suspension cable on every suspension point mechanism, and hoisting the water injection apparatus containing water to a position above the steel pipe concrete column through a tower crane; inserting the water injection pipes of the water storage containers to the acoustic pipes in the steel pipe concrete column, and arranging the water inje