Construction method of cover-and-cut reverse construction concrete walls and columns with vertical structures
A technology of vertical structure and construction method, which is applied in basic structure engineering, underwater structures, artificial islands, etc., can solve the problems of complicated formwork support, difficult control of concrete quality, and difficult control of the density of post-filling materials, etc. The effect of speeding up construction progress, ensuring construction quality and reducing construction difficulty
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[0018] First see figure 1 , according to the design requirements, construct the top floor 11 of the negative layer, and set a lower return section 13 with a height of more than 500mm at the position of the roof 11 corresponding to the lower wall and column. The shape of the brake shoulder can extend the seepage channel of the water at the construction joint, and the concrete at the construction joint can be easily filled and compacted. A casing 12 with a diameter of 150mm is reserved at a distance of 1000mm between the wall and the column, which is used for pouring the wall and column concrete, and the steel bar in the wall and column is reserved for the connecting steel bar 14 whose length exceeds the shoulder-shaped lower return section by 100mm-150mm. It is convenient for the protection of the lower earth excavation and the connection of the lower reinforcement.
[0019] see figure 2 , After the structural concrete of the negative first floor roof 11 reaches the design s...
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