It is reported that the lifting project of precast concrete columns for the 1 # three-dimensional warehouse undertaken this time has opened up a new field for the lifting of large warehouse concrete columns, breaking the weight record for lifting.
This hoisting of precast columns is different from the previous hoisting.
The traditional towers are mostly steel cylindrical structures, with uniform materials, concentrated center of gravity and regular shape; The precast concrete columns lifted this time have a large single weight (average weight of about 192 tons per column) and a long length (up to 40.
6 meters), which belong to brittle material components.
The surface is easily damaged and the internal stress is uneven.
In addition, the precision requirements for the reserved lifting points of the columns are extremely high.
Once the stress deviation occurs, it is easy to cause cracking, and the requirements for lifting stability and synchronization far exceed those of the tower.
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