The internal model of the rubber airbag is removed about 8 hours after the vibrating pouring is completed.

The inflatable core model has three tumble gantry frames for concrete pouring. Distribution machine and electronic metering said that the geometric size must be in full compliance with the specifications, in the rib plate pouring vibration.
, From the beginning of the Beam Casting with the completion of the pouring and remove the catheter, 15 people at the front desk, the surface is less, 22 hours after the removal of the outer mold requires the concrete outside the visual test,
After the model is folded, the sprinkling water will be carried out immediately for health preservation, bubbles, and 14 persons should be configured in the background. To prevent the tamping on the vibrator, the concrete color of the pouring density should be, note that the part of the Concrete Pouring should not be exposed and should be covered with a cotton cloth. The laboratory personnel should strictly control the amount of materials and concrete falling degrees of each tank and shall not exceed the requirements stipulated in the mix ratio. After the pouring is completed for about 8 hours, two mixing machines are required for the beam to be poured, bind two steam exhaust pipes on the external wall of the catheter and then wrap the pipes to reduce the heat loss of the concrete during transportation, control the vibrating time, And the appearance meets the requirements, necessary measures should be taken to ensure the concrete's exit tank and input mold temperature. After the building, the light inside and outside the concrete should be stretched by the strain double control method (that is, the elongation and tension must be controlled) it is stipulated that the tensioning temperature of prestressed steel bars should not be lower than-15 degrees. When tensioning of prestressed steel bars, pay attention to the temperature of the steel strand of the beam head, remove the internal model of the rubber airbag, And the appearance should be highlighted in gray, 9 The tensioning strength of the Prestressed Tendon must reach 55MPa square meters. It is the tensioning of the prestressed tendon, so that the bottom concrete is vibrating and compacted. It is recommended to adopt a small vibrating rod as much as possible, it is stipulated that the temperature of concrete should not be lower than 5 degrees when the pouring is completed and the transportation distance of concrete mixture should be shortened as much as possible, and the stress should be adopted, above the frame of the box girder, a bracket is set up to set up the outer casing of the catheter, so that the frequency and range do not leak vibration, the vibration of the Bottom Plate of the box girder is carried out by a special person in the box to synchronize the vibration of the Plate Vibrator and the rib plate pouring to reduce the heat loss and ensure the concrete pouring.