During the project for the design and manufacture of non-standard forms for concreting concrete products at Novovoronezh NPP, PBS engineers developed a hydraulic form for concreting a through-tube of rectangular cross section at a time, without the formation of working joints. The outer wall of the formwork is mounted on a single movable frame, controlled by a hydraulic system. At the moment of concreting, the hydraulics completely covers the form, bringing it exactly to the design size, then concreting occurs.
When demolding, external hydraulic cylinders are activated, which draw walls away from the concrete surface by 800 mm. Then the hydraulics switches to the internal core operation mode, the pumping station creates oil pressure in the system and the internal formwork unit folds, decreasing in size by 100 mm on each side. Next, a transport frame is put under the core and with the help of jacks it rolls it out to the place of intermediate parking. Then the finished product is removed from the form.
Pipe section – 2800 x 1800, length – 8000 mm. Due to the high demands on surface quality, it was decided to use self-compacting concrete.
The formwork, made in the form of rigid welded shields of box-section, perceived the full hydrostatic pressure of the concrete mix and retained its geometry and tightness during casting.
ASU TO TS:
There are no restrictions on the range of manufactured concrete products:
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individually design, manufacture, equip for the task;
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we use branded quality components;
apply the necessary options for operation;
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