DE801916C - Manufacturing process for ducts - Google Patents

Description

Ducts, e.g. B. those for district heating, were previously after the modular system made of concrete blocks or using wooden cladding made by pouring the walls with concrete. Both types are because of the high The costs of transporting the heavy concrete blocks or the wood required are unprofitable.

According to the method according to the invention, the channel walls and the Floor made of thin concrete or reinforced concrete slabs so that between them Plates and the ground free a space corresponding to the intended wall thickness remains, which is then swallowed up with concrete.

In this way it is possible to cover longer stretches of the canal to be completed in one operation. The panels can have recesses, strips or approaches be provided to hold supports or z. B. also electrical cables to wear. For the separation of the walls @v <ibrend of the building you can z. B. Use adjustable length tubes. There is an advantage to the procedure also in the fact that the walls can be made without joints, i.e. watertight are. The ceiling tiles can also be poured at the 11) point of use.

If the soil in which the channels are embedded is very flexible is e.g. B. consists of sand, then you can add to the construction method described, that one forms the inside and outside of the channel wall from thin concrete slabs and then fill the spaces between these slabs with liquid concrete. Even then, a considerable saving in construction costs will be achieved.

In the drawing, Fig. 1 shows a cross section and Fig. 2 shows a plan view on a duct made according to the invention. Fig.3 shows a cross section through a duct laid in loose sand.

First, trench A-B-C-D is dug in the ground. Thereon the lateral concrete slabs 1, 2 and the floor slab 3 are used. The pillars , 4 determine the thickness of the concrete floor and support the floor slab 3. The room 5 between the concrete slabs and the ground is filled with liquid concrete, which hardens and becomes a solid body with the concrete slabs 1, 2 and 3 connects. In this way, a duct of any wall thickness is created, without having to assemble heavy concrete blocks. The filling of the space between the ground and concrete slabs is carried out as shown in Fig Joints 6 between the concrete walls 5 produced in sections, not with meet the joints of plates 1, 2 and 3, so that under all circumstances a a completely watertight channel is created. Fig. 3 shows a cross section through a sewer laid in sand. The plates 1, 2 and 3 are replaced by the plates 7, Surround 8 and 9 at the desired distance, and the space io is filled with liquid Filled in concrete. This also creates a duct of any wall thickness, which is independent of the nature of the surrounding soil.

When a channel is completed, it can be opened through upper end plates i i sealed and then covered with earth. As Fig. I shows, can the walls i and 2, which are cast in place, with support cams 12 for smaller lines are provided, while the base plate 3 is provided with support supports 13 can be provided which z. B. carry the pipes 14 of a district heating line. To keep the walls i and 2 apart you can, for. B. use stamp i5, which Divided in the middle and provided with right and left-hand threads by a union nut 16 are connected. The exact distance can then go through. Turn the nut 16 easily can be set. You can also use nested tubes, the total length of which is held in place by suitable toggles.

It is clear that the construction described allows any Manufacture type of ducts. In particular one can look at the local conditions adjust and run the channels in any curvature and they also in the altitude Adapt to the circumstances, as you have to put the concrete slabs on the spot accordingly can make. The plates can also be fitted with the desired support cams or equip support strips, so that any rework for the support of the services becomes superfluous.

Claims (2)

PATENT CLAIMS: i. Manufacturing process for ducts, characterized in that a duct is installed in a trench (ABCD) made of concrete slabs (1, 2 and 3), the internal dimensions of which correspond to the desired internal duct profile and the slabs (1, 2 and 3) of which correspond to the thickness of the Desired channel wall have a corresponding distance from the trench walls, whereupon the gap (5) between the trench and channel walls by liquid. Concrete is filled. 2. Method according to claim i, for the production of a duct in sandy soil, characterized in that the outer surfaces of the channel are covered by concrete slabs (7, 8 and are formed and the space (io) between these and the inner walls of the channel forming plates (1, 2, 3) is filled with liquid concrete.